Product Engineer- Backend background

🏢 Summary: Senior fullstack (backend-heavy) engineer to build a greenfield prenatal screening diagnostics product, owning architecture and features end-to-end from backend to selected frontend components. The role focuses on designing scalable Java/Spring Boot services, APIs, and data models, while contributing to React/TypeScript UI and shaping technical direction in a fast-moving MVP phase. Strong emphasis on clean architecture, testing discipline, AWS deployment, PostgreSQL, and effective use of AI-assisted development tools. 🗂️ Requirements: Strong expertise in Java and Spring Boot, Clean API design and domain modeling, Experience defining service boundaries and scalable architectures, Solid understanding of OOP, SOLID, and clean architecture, Working proficiency in React and TypeScript, Proven use of AI coding tools in daily workflow, Experience writing unit, integration, and API tests, PostgreSQL schema design and query optimization, AWS production deployment experience (ECS/EKS, RDS, Lambda, S3), Ability to work in greenfield, ambiguous environments 📃 Skills: Java, Spring, SpringBoot, React, TypeScript, PostgreSQL, AWS, ECS, EKS, RDS, Lambda, S3, REST, OOP, SOLID, SQL, AI, Cursor, Claude 🏢 Description: We are building a new prenatal screening diagnostics product from scratch. The project is currently in an early greenfield phase, with MVP delivery planned within the next six months. We are looking for a senior engineer who enjoys building products end-to-end and feels comfortable taking ownership across the full development lifecycle — from backend architecture and data modeling to APIs and selected frontend features. This role is backend-heavy, but requires a pragmatic fullstack mindset and the ability to contribute wherever needed. You will work closely with product stakeholders in a fast-moving environment, helping shape both technical direction and product decisions. We are particularly interested in engineers who actively use AI-assisted development tools (such as Cursor, Claude Code, or similar) as part of their daily workflow and understand how to leverage them effectively while maintaining high engineering standards and code quality. You will have a direct impact on: defining system architecture and service boundaries, designing scalable backend solutions, building APIs and core business logic, contributing to React/TypeScript frontend development, establishing engineering best practices, testing strategy, and maintainable code standards. The project operates in the diagnostics domain, so attention to quality, reliability, and clean engineering practices is essential. Requirements: Strong Java and Spring Boot expertise — clean API design, domain modeling, sound architectural trade-offs. You think in terms of service boundaries, data flow, and maintainability, not just making it work Solid grasp of software design principles — object-oriented programming, SOLID, clean architecture, separation of concerns. You write code that the next person can read, extend, and trust. You know when a pattern helps and when it's ceremony Working proficiency in React and TypeScript — you can pick up frontend tasks, build components, and integrate with backend APIs independently Proven experience integrating AI coding tools (Claude Code, Cursor, or equivalent) into daily development workflow — including prompt design for code generation, output validation, and actively preventing AI-generated technical debt. You can describe concrete examples of where AI accelerated your delivery and where you chose to override it Testing as a professional discipline, not a checkbox — you write unit, integration, and API tests as part of delivery, own the test pyramid decisions, and treat untested code as unfinished code PostgreSQL — schema design, query optimization, migrations in a production context AWS experience — you've deployed and operated production workloads on AWS (ECS/EKS, RDS, Lambda, S3) and can make informed infrastructure decisions Comfort working in ambiguous, greenfield settings — you define scope with stakeholders rather than waiting for pre-scoped tickets Responsibilities: Own features end-to-end: design, implement, test, deploy, and maintain across the full stack. Work split ~80% backend, 20% frontend. Make foundational architectural decisions on a greenfield codebase — data models, API contracts, service boundaries, test strategy Build and maintain the Java/Spring Boot backend that powers the product's core logic Contribute to the React/TypeScript frontend when needed — you're backend-primary, but you ship UI when the team needs it Integrate AI coding tools into your daily workflow to accelerate delivery while maintaining code quality — and help the team adopt these practices Collaborate directly with product stakeholders to refine requirements in a fast-moving, low-ceremony environment

🏢 Summary: Backend Software Engineer role focused on building and improving security-sensitive backend services and APIs for a global password and credential management product. The position involves designing robust business logic, access control systems, and integrations while ensuring high standards of security, reliability, and maintainability. Engineers contribute across the full development lifecycle in a collaborative, open-source-driven environment. 🗂️ Requirements: Production experience building backend applications with PHP, Strong knowledge of a modern PHP framework (CakePHP, Symfony or Laravel), Solid backend engineering fundamentals, Ability to design simple, robust solutions for complex problems, Experience with testing and maintaining high code quality, Ability to work on business logic, access control and security-sensitive systems, Collaborative working style with clear communication skills, Interest in security and privacy-focused software development 📃 Skills: PHP, CakePHP, Symfony, Laravel, SQL, PHPUnit, OpenAPI, Git, Docker, Linux, macOS, LDAP, OAuth, JWT, SCIM, WebAuthn, ActiveDirectory, JavaScript, Bash, Python, Go, Rust 🏢 Description: THE CLIENT Our client is a fast-growing cybersecurity product company rethinking how teams manage and share sensitive access. Their platform is trusted by 40,000+ organisations across 50+ countries - and growing fast. This is an engineering-led business: modern architecture, real technical challenges, and a strong focus on open source, privacy, and security. They’re building a fully remote, collaborative team and looking for engineers who take ownership and enjoy solving meaningful problems. If you want to work on a product with real impact at global scale - this is worth a conversation. THE ROLE: Our client is looking for a software engineer to join its Backend team and help build the systems behind its password and credential management products across Community, Enterprise and Cloud editions. This is a backend engineering role in a security-sensitive product environment. The API sits at the centre of how our client handles business logic, access rights, integrations, data integrity and long-term product reliability. The role is well-suited to an engineer who enjoys solving complex product problems, building sustainable systems, and balancing security, simplicity and maintainability. You would contribute across the full development lifecycle: understanding the problem, shaping the technical approach, implementing features, improving the codebase over time, and helping maintain a high standard of quality. This role will suit someone who likes ownership, thinks clearly about impact and trade-offs, and is motivated by building trustworthy software in an open-source environment. RESPONSIBILITIES: Build and improve backend services and API workflows across product suite Translate functional and product requirements into clear, reliable technical solutions Work on business logic, access control, integrations and security-sensitive application flows Help maintain and improve code quality, test coverage, performance and backward compatibility Contribute to technical design discussions and identify opportunities to simplify or strengthen the system over time Collaborate with product, support, security and engineering peers to refine and deliver solutions Contribute to documentation and knowledge sharing across the team CORE REQUIREMENTS: Experience building backend applications in production with PHP Strong backend engineering fundamentals with a modern framework such as CakePHP, Symfony or Laravel Ability to break down complex problems and design simple, robust solutions Good testing habits and attention to quality Comfort working across product, engineering and implementation questions - not just executing tickets Strong collaboration skills, openness to feedback, and a low-ego working style Interest in security, privacy, or building trustworthy software systems NICE TO HAVE: Experience working on security-sensitive applications or authentication / access-control problems Exposure to cryptography-related systems or secure integrations Experience with OpenAPI or well-structured public-facing APIs Experience maintaining long-lived software products Experience with directory integrations or identity systems such as LDAP, Active Directory, OAuth, JWT, SCIM or WebAuthn Experience contributing to open-source projects Familiarity with another language such as JavaScript, Bash, Python, Go or Rust Tools and technologies you’ll work with: You may work across technologies such as PHP, CakePHP, SQL, PHPUnit, OpenAPI, Git and Docker, in Linux and macOS-based development environments. We do not expect candidates to bring experience with every tool listed here. How you work You take ownership of problems, not just tasks You value simplicity and avoid over-engineering You communicate clearly and raise risks early You work well in an environment where feedback is frequent and constructive

🏢 Summary: Backend Software Engineer role focused on building and maintaining secure backend services and APIs for password and credential management products across Community, Enterprise, and Cloud editions. The position involves designing reliable business logic, access control mechanisms, and integrations in a security-sensitive environment. Engineers contribute across the full development lifecycle with strong emphasis on quality, maintainability, and security. 🗂️ Requirements: Commercial experience building backend applications in PHP, Experience with modern PHP frameworks (CakePHP, Symfony or Laravel), Strong backend engineering fundamentals, Ability to design robust solutions for complex problems, Experience writing tests and maintaining code quality, Understanding of security-sensitive systems or access control, Experience working with APIs and backend integrations, Proficiency with SQL and relational databases, Experience using Git for version control, Ability to work in Linux or macOS development environments 📃 Skills: PHP, CakePHP, Symfony, Laravel, SQL, PHPUnit, OpenAPI, Git, Docker, Linux, macOS, LDAP, OAuth, JWT, SCIM, WebAuthn, ActiveDirectory, JavaScript, Bash, Python, Go, Rust 🏢 Description: THE CLIENT Our client is a fast-growing cybersecurity product company rethinking how teams manage and share sensitive access. Their platform is trusted by 40,000+ organisations across 50+ countries - and growing fast. This is an engineering-led business: modern architecture, real technical challenges, and a strong focus on open source, privacy, and security. They’re building a fully remote, collaborative team and looking for engineers who take ownership and enjoy solving meaningful problems. If you want to work on a product with real impact at global scale - this is worth a conversation. THE ROLE: Our client is looking for a software engineer to join its Backend team and help build the systems behind its password and credential management products across Community, Enterprise and Cloud editions. This is a backend engineering role in a security-sensitive product environment. The API sits at the centre of how our client handles business logic, access rights, integrations, data integrity and long-term product reliability. The role is well-suited to an engineer who enjoys solving complex product problems, building sustainable systems, and balancing security, simplicity and maintainability. You would contribute across the full development lifecycle: understanding the problem, shaping the technical approach, implementing features, improving the codebase over time, and helping maintain a high standard of quality. This role will suit someone who likes ownership, thinks clearly about impact and trade-offs, and is motivated by building trustworthy software in an open-source environment. RESPONSIBILITIES: Build and improve backend services and API workflows across product suite Translate functional and product requirements into clear, reliable technical solutions Work on business logic, access control, integrations and security-sensitive application flows Help maintain and improve code quality, test coverage, performance and backward compatibility Contribute to technical design discussions and identify opportunities to simplify or strengthen the system over time Collaborate with product, support, security and engineering peers to refine and deliver solutions Contribute to documentation and knowledge sharing across the team CORE REQUIREMENTS: Experience building backend applications in production with PHP Strong backend engineering fundamentals with a modern framework such as CakePHP, Symfony or Laravel Ability to break down complex problems and design simple, robust solutions Good testing habits and attention to quality Comfort working across product, engineering and implementation questions - not just executing tickets Strong collaboration skills, openness to feedback, and a low-ego working style Interest in security, privacy, or building trustworthy software systems NICE TO HAVE: Experience working on security-sensitive applications or authentication / access-control problems Exposure to cryptography-related systems or secure integrations Experience with OpenAPI or well-structured public-facing APIs Experience maintaining long-lived software products Experience with directory integrations or identity systems such as LDAP, Active Directory, OAuth, JWT, SCIM or WebAuthn Experience contributing to open-source projects Familiarity with another language such as JavaScript, Bash, Python, Go or Rust Tools and technologies you’ll work with: You may work across technologies such as PHP, CakePHP, SQL, PHPUnit, OpenAPI, Git and Docker, in Linux and macOS-based development environments. We do not expect candidates to bring experience with every tool listed here. How you work You take ownership of problems, not just tasks You value simplicity and avoid over-engineering You communicate clearly and raise risks early You work well in an environment where feedback is frequent and constructive

🏢 Summary: Principal Platform Engineer role focused on backend architecture, complex platform engineering, and technical leadership in a SaaS environment supporting advanced manufacturing operations. The position involves defining engineering standards, solving performance and scalability challenges, mentoring engineers, and driving architectural decisions using .NET and Azure technologies. This is a senior individual contributor role with hybrid work in Kraków. 🗂️ Requirements: 8+ years of backend engineering experience, Expert knowledge of C#, Advanced experience with modern .NET, Experience in Staff Engineer, Principal Engineer, or Senior Tech Lead role, Experience designing and owning large-scale monolithic and distributed systems, Expert-level SQL and database design skills, Experience optimizing slow production queries, Strong expertise with Entity Framework, Knowledge of DDD, Knowledge of clean architecture, Experience with test automation strategies, Strong English communication skills, Experience mentoring engineers and leading technical discussions, Hands-on experience with AI coding tools 📃 Skills: C#, .NET, SQL, EntityFramework, DDD, Azure, Angular, MassTransit, OpenTelemetry, Grafana, AzureDevOps, CI/CD, Cursor, Claude, AzureSQL 🏢 Description: Principal Platform Engineer at Manufacturo 190-260 PLN/H Hybrid – Kraków or Remote B2B role Manufacturo powers operations for companies building satellites, fusion reactors, next-generation aircraft, and hypersonic vehicles. Our clients are working on some of the most advanced industrial programs in the world — and they rely on software that can keep up. Companies such as Hermeus, Relativity Space, and Sierra Space use Manufacturo to run complex manufacturing operations with greater control, traceability, and speed. We're a SaaS company with a team that includes former leaders from SpaceX. We move fast, operate globally, and make decisions swiftly - because the people we serve can't afford anything less. Your voice will be heard here, and the work you do will have a real impact on the world. We are hiring a Principal Software Engineer to help shape the technical future of our platform. This role is for someone who wants to solve hard backend problems, guide architecture with sound judgment, and raise the level of other engineers through mentorship, communication, and strong engineering standards. The Role As a Principal Platform Engineer at Manufacturo, you'll work at both levels: deep in the hardest problems on the platform, and wide enough to set the standard for others to follow. You'll define the architecture, raise the quality bar, and make sure the right technical decisions are made, not by directing from a distance, but by being the person in the room whose opinion carries weight because the work backs it up. This role requires both deep hands-on technical contribution and the ability to multiply the impact of others. We need someone who can take on the hardest problems while also helping senior developers and leads make better technical decisions through teaching, feedback, and clear standards. You will report directly to the Director of Software Engineering and act as their technical partner across the organization. This is a individual contributor role with no people management responsibilities. You should be comfortable working in a high-change environment where priorities evolve, new information appears quickly, and strong technical judgment is needed to keep teams moving in the right direction without losing quality. What you'll do Own the architecture and technical direction of the platform’s core Tackle the hardest engineering problems, including performance bottlenecks, complex integrations, and architectural evolution Define and evolve backend engineering standards across all teams Lead design reviews and author RFCs/ADRs for high-impact technical decisions Partner with the Director of Software Engineering, Product, and engineering leadership to assess technical feasibility early, shape direction, and resolve tradeoffs before they become delivery problems Mentor senior engineers code reviews, architecture workshops, pair programming, technical discussions, and tech talks that improve how the organization designs, builds, and operates software Raise the quality bar across the backend through example, teaching, and clear standards Required skills & experience 8+ years of backend engineering experience, with deep, proven mastery of C# and modern .NET A demonstrated track record operating successfully in a Staff Engineer, Principal Engineer, or Senior Tech Lead role Proven experience architecting, building, and owning large, complex systems end-to-end, including both monolithic and distributed architectures Expert-level SQL and database design skills, including diagnosing slow queries in production and designing schemas that hold up under real load Deep practical expertise with Entity Framework, including performance tradeoffs, query behavior, and data access strategy Strong architectural judgment and experience applying concepts such as DDD and clean architecture pragmatically A strong quality mindset, including test automation strategy and clear standards for what “done” means Strong written and verbal communication skills in English — you are comfortable explaining technical tradeoffs, mentoring other engineers, leading code reviews, and facilitating architecture discussions Enthusiasm for and hands-on proficiency with AI coding tools such as Cursor and Claude Code as productivity multipliers Nice to have You'll stand out if you bring any of the following: Hands-on experience with cloud infrastructure at scale, with Azure being a strong advantage Experience with Angular or a modern frontend framework - enough to make informed architectural decisions across the full stack Familiarity with Azure DevOps and CI/CD pipeline design at an organizational level, not just usage Experience designing for compliance-driven deployment constraints - data sovereignty, tenant isolation, and schema management across numbers of independent databases Background or genuine curiosity about Manufacturing Execution Systems (MES) -understanding the domain makes the hardest problems tractable Our tech stack Backend: .NET, C#, Entity Framework, SQL Server / Azure SQL Messaging: Azure Service Bus, MassTransit Observability: OpenTelemetry, Grafana stack Frontend: Angular, our own Angular Component Library Cloud: Azure CI/CD: Azure DevOps AI tooling: Cursor, Claude Code, and other modern AI-assisted development tools What you’ll get in return Real authority, real access. Direct collaboration with the CPO and Director of Development. Your decisions will be heard, debated, and acted on - with organizational backing to make standards stick. Customers building the next century. Rockets, fusion reactors, hypersonic systems. The problems you solve here have consequences that matter. People who will match you. You'll work alongside engineers and leaders with backgrounds from SpaceX and other high-bar organizations. Expect to be challenged, not just followed. AI at the foundation, not the edge. You'll be building the architecture that makes AI native to the platform - not retrofitting it later. Hybrid working with three days in our Kraków office, comprehensive healthcare including life insurance, and a Multisport Card. This role is for someone serious about their craft. If that is you, we would like to talk.

🏢 Summary: Backend engineering role focused on building scalable Python services and APIs for an AI platform used by enterprise customers. The position involves developing production backend systems, integrating AI components, and improving reliability in a collaborative engineering environment. Offers modern AI tooling, cloud-native development exposure, and growth opportunities within an AI-focused product team. 🗂️ Requirements: 2–5 years of backend application development experience, Python, REST APIs, Backend services, SQL, PostgreSQL, Asynchronous programming, Background job processing, AWS, Azure, GCP, Testing, Version control, AI development tools, English B2 📃 Skills: Python, FastAPI, Django, PostgreSQL, SQL, AWS, Azure, GCP, Docker, Redis, RabbitMQ, Kafka, TypeScript, REST, Git, CI/CD, ChatGPT, Copilot, Codex, Claude 🏢 Description: About Us Many companies want to use AI agents, but these agents often struggle with real business tasks. We solve this problem by building a platform that helps AI understand business rules, workflows, and processes. This enables AI to make better decisions and provide accurate, reliable, and trustworthy results. Our technology is used by leading companies across multiple industries to automate up to 85% of customer cases, reduce handling time by 20–25%, and complete tasks that previously took hours in just seconds. We work with leading technology partners and have been recognized for our innovative approach. Our mission is to help people everywhere get better answers through AI. About the Role We are looking for a Mid Backend Engineer to help build scalable backend services that power our AI platform. You'll work closely with experienced backend engineers, frontend developers, product managers, and platform engineers to develop new features, improve existing systems, and deliver reliable production software. This is a great opportunity to work on modern AI infrastructure while growing your technical skills in a collaborative engineering environment. Responsibilities - Build and maintain backend services, APIs, and background processing systems. - Develop scalable application logic using Python. - Collaborate with product managers and engineers to deliver new product features. - Integrate backend services with databases, external APIs, and AI components. - Monitor, troubleshoot, and improve production services. - Write clean, maintainable, and well-tested code. - Participate in code reviews and engineering discussions. - Improve development workflows using AI tools and automation. - Continuously learn from production feedback and contribute to improving system reliability and performance. Requirements - 2–5 years of experience building production backend applications. - Good knowledge of Python. - Experience building REST APIs and backend services. - Understanding of relational databases (PostgreSQL or similar) and SQL. - Familiarity with asynchronous programming and background job processing. - Basic understanding of cloud platforms such as AWS, Azure, or GCP. - Understanding of software engineering best practices, testing, and version control. - Good communication skills and willingness to collaborate across engineering and product teams. - Experience using AI development tools such as GitHub Copilot, Claude Code, ChatGPT, or similar. - English at B2 level or higher. Nice to Have - Experience with FastAPI, Django, or similar Python frameworks. - Experience working with Docker and CI/CD pipelines. - Familiarity with Redis, RabbitMQ, Kafka, or similar messaging technologies. - Experience building AI-powered applications or integrating LLM APIs. - Basic knowledge of TypeScript or frontend development. - Interest in distributed systems and cloud-native architectures. What We Offer - 20,000–24,000 PLN B2B (depending on experience). - Company stock options. - MacBook Pro. - Modern technology stack with opportunities to contribute to open-source projects. - Access to advanced AI development tools, including GitHub Copilot, Claude Code, OpenAI Codex, TypingMind, and MCP Servers. - The opportunity to work on production AI systems used by enterprise customers. - A collaborative engineering culture focused on learning, ownership, and continuous improvement. - Career growth alongside experienced engineers in a fast-growing AI company. Our Culture and Values - Quality - We build reliable software with attention to detail and long-term maintainability. - Momentum - We move quickly, learn continuously, and improve through iteration. - Accountability - We take responsibility for our work and communicate openly. - Hard Work - We solve ambitious problems together and support each other along the way. - Learning Agility - We stay curious, embrace feedback, and continuously develop our skills. - Adapt and Thrive - We welcome change and see challenges as opportunities to improve. - Win Together - We collaborate, share knowledge, and succeed as one team.

🏢 Summary: Principal Software Engineer role focused on leading the architectural evolution of a complex SaaS platform, solving advanced backend challenges, and setting engineering standards across teams. The position combines deep hands-on development in a .NET monolith and microservices environment with high-level architectural ownership. It requires strong technical judgment to guide large-scale system design, performance optimization, and AI-native capabilities. 🗂️ Requirements: 8+ years backend engineering experience, Expert knowledge of C#, Expert knowledge of modern .NET, Experience in Staff/Principal/Senior Tech Lead role, Experience architecting large-scale monolithic and distributed systems, Expert SQL and database design skills, Experience diagnosing and optimizing slow production queries, Deep expertise with Entity Framework, Strong understanding of DDD and clean architecture, Experience defining backend engineering standards, Experience with test automation strategies, Strong English communication skills, Hands-on experience with AI coding tools 📃 Skills: C#, .NET, SQL, EntityFramework, AzureSQL, SQLServer, DDD, CleanArchitecture, MassTransit, AzureServiceBus, OpenTelemetry, Grafana, Azure, AzureDevOps, Angular, Cursor, Claude 🏢 Description: Principal Platform Engineer at Manufacturo 190-260 PLN/H Hybrid – Kraków B2B role Manufacturo powers operations for companies building satellites, fusion reactors, next-generation aircraft, and hypersonic vehicles. Our clients are working on some of the most advanced industrial programs in the world — and they rely on software that can keep up. Companies such as Hermeus, Relativity Space, and Sierra Space use Manufacturo to run complex manufacturing operations with greater control, traceability, and speed. We're a SaaS company with a team that includes former leaders from SpaceX. We move fast, operate globally, and make decisions swiftly - because the people we serve can't afford anything less. Your voice will be heard here, and the work you do will have a real impact on the world. We are hiring a Principal Software Engineer to help shape the technical future of our platform. This role is for someone who wants to solve hard backend problems, guide architecture with sound judgment, and raise the level of other engineers through mentorship, communication, and strong engineering standards. The Role As a Principal Platform Engineer at Manufacturo, you'll work at both levels: deep in the hardest problems on the platform, and wide enough to set the standard for others to follow. You'll define the architecture, raise the quality bar, and make sure the right technical decisions are made, not by directing from a distance, but by being the person in the room whose opinion carries weight because the work backs it up. This role requires both deep hands-on technical contribution and the ability to multiply the impact of others. We need someone who can take on the hardest problems while also helping senior developers and leads make better technical decisions through teaching, feedback, and clear standards. You will report directly to the Director of Software Engineering and act as their technical partner across the organization. This is a individual contributor role with no people management responsibilities. You should be comfortable working in a high-change environment where priorities evolve, new information appears quickly, and strong technical judgment is needed to keep teams moving in the right direction without losing quality. What you'll do Own the architecture and technical direction of the platform’s core Tackle the hardest engineering problems, including performance bottlenecks, complex integrations, and architectural evolution Define and evolve backend engineering standards across all teams Lead design reviews and author RFCs/ADRs for high-impact technical decisions Partner with the Director of Software Engineering, Product, and engineering leadership to assess technical feasibility early, shape direction, and resolve tradeoffs before they become delivery problems Mentor senior engineers code reviews, architecture workshops, pair programming, technical discussions, and tech talks that improve how the organization designs, builds, and operates software Raise the quality bar across the backend through example, teaching, and clear standards Required skills & experience 8+ years of backend engineering experience, with deep, proven mastery of C# and modern .NET A demonstrated track record operating successfully in a Staff Engineer, Principal Engineer, or Senior Tech Lead role Proven experience architecting, building, and owning large, complex systems end-to-end, including both monolithic and distributed architectures Expert-level SQL and database design skills, including diagnosing slow queries in production and designing schemas that hold up under real load Deep practical expertise with Entity Framework, including performance tradeoffs, query behavior, and data access strategy Strong architectural judgment and experience applying concepts such as DDD and clean architecture pragmatically A strong quality mindset, including test automation strategy and clear standards for what “done” means Strong written and verbal communication skills in English — you are comfortable explaining technical tradeoffs, mentoring other engineers, leading code reviews, and facilitating architecture discussions Enthusiasm for and hands-on proficiency with AI coding tools such as Cursor and Claude Code as productivity multipliers Nice to have You'll stand out if you bring any of the following: Hands-on experience with cloud infrastructure at scale, with Azure being a strong advantage Experience with Angular or a modern frontend framework - enough to make informed architectural decisions across the full stack Familiarity with Azure DevOps and CI/CD pipeline design at an organizational level, not just usage Experience designing for compliance-driven deployment constraints - data sovereignty, tenant isolation, and schema management across numbers of independent databases Background or genuine curiosity about Manufacturing Execution Systems (MES) -understanding the domain makes the hardest problems tractable Our tech stack Backend: .NET, C#, Entity Framework, SQL Server / Azure SQL Messaging: Azure Service Bus, MassTransit Observability: OpenTelemetry, Grafana stack Frontend: Angular, our own Angular Component Library Cloud: Azure CI/CD: Azure DevOps AI tooling: Cursor, Claude Code, and other modern AI-assisted development tools What you’ll get in return Real authority, real access. Direct collaboration with the CPO and Director of Development. Your decisions will be heard, debated, and acted on - with organizational backing to make standards stick. Customers building the next century. Rockets, fusion reactors, hypersonic systems. The problems you solve here have consequences that matter. People who will match you. You'll work alongside engineers and leaders with backgrounds from SpaceX and other high-bar organizations. Expect to be challenged, not just followed. AI at the foundation, not the edge. You'll be building the architecture that makes AI native to the platform - not retrofitting it later. Hybrid working with three days in our Kraków office, comprehensive healthcare including life insurance, and a Multisport Card. This role is for someone serious about their craft. If that is you, we would like to talk.

🏢 Summary: Senior Product Engineer role focused on building full-stack applications, AI-assisted workflows, automation systems, and cloud infrastructure in a remote-first environment. The position emphasizes end-to-end ownership, AI-native development practices, and delivering measurable business impact across multiple technical domains. 🗂️ Requirements: Experience building production web applications, Experience with modern application frameworks, Experience designing A/B testing frameworks, Knowledge of cloud infrastructure, Experience with relational databases and query optimization, Proficiency with Git-based workflows and CI/CD, Ability to use AI-assisted development tools in production, Strong architectural and systems thinking, Ability to independently deliver complex software systems, Authorization to work in the United States 📃 Skills: PHP, Python, TypeScript, Laravel, Astro, AWS, Cloudflare, MySQL, Datadog, PostHog, Git, CI/CD, LLMs, RAG, Embeddings, Containerization, Orchestration 🏢 Description: What makes TechnologyAdvice unique is the breadth of problems our teams solve. Our engineers work across content platforms, data products, AI-powered workflows, lead generation systems, revenue operations, analytics, and internal business tools. Rather than being confined to a single product area, engineers have the opportunity to create impact across nearly every part of the business. Our Engineering Team builds and maintains the platforms, data pipelines, automation systems, and infrastructure that power the company. We believe exceptional engineers create value by solving business problems, not just writing code, and we empower our teams to work directly with stakeholders to identify opportunities and deliver solutions. We are a lean, high-leverage engineering organization where individual engineers can have outsized influence on company outcomes. Unlike many engineering roles focused on a single product, you'll have the opportunity to work across content platforms, revenue systems, AI workflows, analytics, automation, and internal business tools. We value ownership, execution, and business impact over years of experience. Exceptional candidates who consistently turn ideas into production systems and demonstrate extraordinary leverage through AI-assisted development are encouraged to apply. The opportunity We're seeking a Senior Product Engineer who uses AI as a core part of their engineering workflow. You'll leverage modern AI tools to accelerate software delivery while maintaining high standards for architecture, reliability, security, and maintainability. We believe exceptional engineers can create outsized business impact when empowered by modern AI tools, and we're building around that philosophy. As an individual contributor on our distributed team, you'll independently identify opportunities, define solutions, and deliver systems from concept to production. You'll work across the full lifecycle of software development—including discovery, architecture, implementation, deployment, and ongoing iteration—while collaborating closely with engineers, business stakeholders, and operational teams throughout the organization. Success in this role is measured by business impact, speed of execution, quality of solutions, and the ability to independently identify and deliver high-value opportunities. If you thrive in ambiguity, enjoy solving real business problems, and are excited by the idea of using AI to increase your engineering leverage, we'd love to talk. The best candidates for this role are naturally curious, highly autonomous, and energized by identifying opportunities that others overlook. What you'll do - Apply AI-assisted development practices to rapidly prototype, validate, and ship production-ready solutions - Identify opportunities across the business where software, automation, data, or AI can create meaningful operational, product, or revenue impact - Own solutions end-to-end—from discovery and scoping through architecture, implementation, deployment, measurement, and ongoing iteration - Collaborate directly with business stakeholders to understand problems, define solutions, communicate trade-offs, and measure outcomes - Design, build, and maintain full-stack applications, backend services, automations, and internal tools that drive business value - Contribute to architectural decisions, technical strategy, and long-term platform evolution - Work directly with cloud infrastructure and edge platforms, including AWS and Cloudflare - Monitor, troubleshoot, and improve system reliability, observability, performance, and operational excellence - Conduct thoughtful code reviews, uphold high engineering standards, and mentor other engineers - Continuously evaluate new technologies, AI capabilities, and development practices that can increase team effectiveness and engineering leverage Who you are Product Ownership & Execution - Demonstrated ability to move from ambiguous business problems to deployed solutions, collaborating directly with stakeholders throughout discovery, delivery, and measurement - Proven track record of independently delivering complex software systems and business outcomes with minimal oversight - Strong judgment in evaluating build-vs-buy decisions and identifying opportunities to leverage existing platforms, automation, and AI before building custom solutions AI-Native Engineering - Demonstrated ability to effectively leverage AI-assisted development tools in production environments while maintaining high standards for quality, security, performance, and maintainability - Strong systems thinking and architectural judgment to validate, refine, and extend AI-generated solutions Technical Expertise - Experience building and maintaining production web applications - Comfortable working within modern application frameworks - Experience designing and implementing experimentation and A/B testing frameworks - Working knowledge of cloud infrastructure - Solid experience with relational databases, including writing and optimizing queries both within and outside of ORMs - Proficiency with Git-based development workflows, code reviews, CI/CD pipelines, and automated deployment practices Collaboration & Communication - Strong communication skills and the ability to collaborate effectively across technical and non-technical stakeholders in a globally distributed organization - Self-driven, highly autonomous, and comfortable operating in a remote-first environment while managing priorities and consistently delivering results Experience with PHP, Python, TypeScript, Laravel, Astro, AWS, Cloudflare, MySQL, Datadog, PostHog, LLM APIs, embeddings, RAG architectures, agent frameworks, infrastructure-as-code, containerization, or orchestration is helpful. Engineering Culture - We ship frequently — small, incremental changes deployed via GitOps - We embrace AI — use of AI-powered tools such as Cursor, Claude, and ChatGPT to accelerate development - We own our infrastructure — engineers are empowered to improve the systems they build - We optimize for outcomes — engineers are encouraged to identify opportunities, challenge assumptions, and solve business problems What we offer you - Career growth opportunities with mentorship and leadership programs - Flex Fridays with adjustable schedules - Remote-first work environment - Flexible PTO - Medical, dental, and vision coverage - Life, AD&D, short-term, and long-term disability insurance - 401K with company match - Paid parental leave - Wellness perks and fitness reimbursements - Pet insurance - Speaker series bonus opportunities - Book reimbursement program - Bucket list benefit after 3 years - In-office catered lunches Work authorization Employer work visa sponsorship and support are not provided for this role. Applicants must be currently authorized to work in the United States at hire and maintain authorization throughout employment. Salary Range Annual pay range: $160,000—$230,000 USD Pre-employment screening required. Any AI-generated or incomplete application answers will be auto-rejected.

🏢 Summary: Senior Backend Engineer responsible for designing, building, and maintaining production-grade backend systems that power AI-driven business automation. The role covers full ownership from system design to deployment, focusing on scalable, reliable distributed systems and cloud infrastructure. This is a Warsaw-based, office role with strong emphasis on technical leadership and AI-supported development workflows. 🗂️ Requirements: Senior-level experience in backend engineering on production systems, Strong Python programming skills, Experience with distributed systems concepts, Experience with cloud platforms (AWS, Azure, or similar), Knowledge of SQL and NoSQL databases, Ability to design, implement, and deliver systems to production, Strong written and spoken communication skills, Regular use of AI tools in development workflows 📃 Skills: Python, AWS, Azure, SQL, NoSQL, DistributedSystems, Concurrency, AsynchronousProcessing, APIs, Cloud, GitHubCopilot, OpenAI, Claude, TypeScript 🏢 Description: About Us Many companies want to use AI agents, but these agents often struggle with real business tasks. We solve this problem by building a platform that helps AI understand business rules, workflows, and processes. This allows AI to make better decisions and provide accurate, reliable, and compliant results. Well-known companies from different industries use our technology to automate up to 85% of customer cases, reduce handling time by 20–25%, and complete tasks that used to take hours in just seconds. We also work with leading technology partners and have been recognized for our innovative approach. Our goal is to help people everywhere get better answers through AI. Job Description We are looking for a Senior Backend Engineer who can take ownership of important systems instead of only completing assigned tasks. You will solve complex problems, design backend solutions, build them, and make sure they run well in production. We want someone with strong technical skills, good communication, and the ability to create simple, reliable, and easy-to-maintain systems. This is a product engineering role with responsibility from system design to production. The position is based in Warsaw and requires office work. Responsibilities Design and develop backend services, APIs, data processing, and background tasks for production systems. Turn unclear business needs into clear technical plans and practical solutions. Maintain services after release by improving reliability, monitoring, performance, and fixing issues. Make good decisions about system architecture, data models, interfaces, and future scaling. Write technical documentation, architecture notes, and diagrams when they help the team. Work closely with product managers, frontend engineers, and platform engineers to deliver complete solutions. Improve development processes using AI tools, automation, and internal workflows. Support the team through code reviews, design reviews, and practical technical leadership. Requirements Strong experience as a senior backend engineer working on production systems. Excellent Python skills and the ability to write clean and maintainable code. Good understanding of distributed systems, including concurrency, failure handling, data consistency, asynchronous processing, and service design. Experience with cloud platforms such as AWS, Azure, or similar services. Knowledge of SQL, NoSQL databases, schema design, and performance optimization. Ability to take a project from an idea through design and implementation to production. Strong written and spoken communication skills with the ability to explain technical topics clearly. Regular use of AI tools in everyday development and interest in improving AI-based workflows. Nice to Have Experience with LLM-based applications, search systems, AI infrastructure, or large data pipelines. Knowledge of TypeScript or the ability to contribute to frontend development when needed. Experience guiding other engineers and influencing technical decisions without being a formal manager. What We Offer B2B contract and company stock options. MacBook Pro for work. Modern technology stack and opportunities to contribute to open-source projects. Access to advanced AI development tools, including GitHub Copilot, Claude Code, OpenAI Codex, TypingMind, and MCP servers. Our Culture and Values Our leadership team has strong experience in AI and knowledge management. We have secured more than $60 million in funding and achieved three years of continuous 3x growth. Our work is based on these values: Quality – We aim for excellent work and high coding standards. Momentum – We take initiative and keep projects moving forward. Accountability – We take responsibility and give honest, respectful feedback. Hard Work – We believe great results come from teamwork and consistent effort. Learning Agility – We stay curious, learn from mistakes, and improve every day. Adapt and Thrive – We accept change and see challenges as opportunities. Win Together – We succeed as one team through honesty, openness, and support for our shared mission.

🏢 Summary: Senior or Staff Backend Engineer role focused on architecting and scaling AI-native backend systems for a modern accounting platform. The position involves designing distributed services, building high-performance APIs, and establishing engineering standards to support rapid, reliable product delivery. You will work closely with Product, AI, and Operations teams to develop agentic systems and scalable data pipelines. 🗂️ Requirements: 5–10+ years of backend engineering experience, Proven experience designing, building, and operating production backend systems at scale, Strong expertise in API design, Strong expertise in data modelling, Deep understanding of distributed systems trade-offs, Hands-on experience with AWS or GCP in production, Practical experience with CI/CD in high-frequency deployment environments, Experience implementing testing and deployment strategies, Strong knowledge of observability practices, Experience participating in on-call rotations 📃 Skills: TypeScript, Node.js, React, AWS, GCP, Terraform, PostgreSQL, OpenAI, Azure, CI/CD, APIs, DistributedSystems 🏢 Description: ABOUT THE ROLE We're looking for a Senior or Staff Backend Engineer to own and evolve our backend services as we scale. This is a broad, high-impact role — you'll architect new features, build the systems that underpin our core product, and set the engineering standards that shape how the whole team works. The focus is on building a modern, AI-native developer experience. That means working closely with Product, AI, and Operations teams to design agentic systems, distributed data pipelines, and scalable incident response infrastructure — and doing it in a way that lets the team ship with confidence multiple times a day. WHAT YOU'LL WORK ON Architecture and feature design Partner with Product, AI, and Operations teams to architect new features and complex agentic systems. Make clear architectural trade-offs that balance platform, product, and business goals. Backend services and APIs Build and maintain the backend services and APIs that power the core product. Ensure systems are secure, well-tested, and high performance. Distributed systems Design and implement distributed services to orchestrate data pipelines, automate investigations, and enable incident response at scale. Operational excellence Own operational best practices so the team can ship multiple times a day with confidence. Healthy on-call culture and strong observability are part of what you'll build and maintain. Engineering standards Set the bar for writing, communication, and system design across the team. Your influence will shape how a modern AI-native product is built. WHAT WE LOOK FOR 5–10+ years of backend engineering experience A strong track record designing, building, and operating production backend systems at scale. Deep backend fundamentals Expertise in API design, data modelling, and reasoning about distributed systems trade-offs. You understand the nuances, not just the patterns. AWS or GCP hands-on experience Solid understanding of how infrastructure decisions impact application reliability and performance. You've run things in production, not just designed them. CI/CD in practice Practical experience with testing and deployment strategies in high-frequency shipping environments. Observability and on-call maturity A solid grasp of what good observability looks like and how to build healthy on-call practices that don't burn people out. Bonus Experience at an early-stage or scaling startup. Exposure to modern AI and ML systems. Experience shipping product without a dedicated product manager. TECH STACK TypeScript, React, Node.js, AWS, Terraform, PostgreSQL, OpenAI, Azure AI. The team uses GitHub, Slack, Linear, Figma, and Notion day to day. THE TEAM Small, senior, and in-person. The office is in central Wrocław, next to the main train station. The expectation is 4–5 days a week in the office. Relocation support is available for the right candidate. COMPENSATION & BENEFITS Salary $130,000 – $190,000 USD depending on experience, plus competitive equity. Wellness and commute stipend $100 per month. Hardware Premium hardware provided — MacBook Pro and AirPods. Food Daily in-office lunch and dinner. Time off 20 PTO days plus 9 US public holidays. Relocation Support available for candidates relocating to Wrocław.

🏢 Summary: Senior Product Engineer role focused on rapidly building and validating prototypes, MVPs, and AI-driven features for a next-generation commerce and retail media platform. The position operates across the full stack, running experiments, integrating with partners, and scaling winning solutions based on real user data. Emphasis is on fast experimentation, product thinking, and leveraging AI coding tools as standard practice. 🗂️ Requirements: Full-stack development capability (frontend, API, database), Fluency with AI coding tools, Experience building MVPs and POCs, Ability to design and run experiments, Experience with cloud infrastructure, Integration experience with external systems, Knowledge of distributed systems, Ability to work with metrics and data analysis, Proficiency in JVM ecosystem (Java or Kotlin), Experience with AWS 📃 Skills: Java, Kotlin, AWS, Spring, Kafka, TypeScript, Angular, Vue, Python, Terraform, Docker, GitHub, DataDog, SQL, APIs, AI 🏢 Description: Build the future of Commerce & Retail Media — fast. At Commerce Media Tech , part of Team Internet Group , we’re building the next generation of commerce and retail media technology from the ground up. We’re the team behind Zeropark, and now we’re creating a brand‑new platform designed for speed, experimentation, and AI‑powered innovation. If you love turning “this might work” into “here’s a working prototype we can test today,” you’ll fit right in. This is not traditional software engineering. This is product engineering at the frontier—rapid experiments, smart MVPs, real user data, and decisions driven by learning velocity. What you’ll work on As a Senior Product Engineer, you’ll operate across the full stack to quickly validate ideas, kill weak ones, and scale the winners. You will: Build prototypes, MVPs, and experiments that validate or kill business hypotheses in days—not months Develop AI‑driven features such as real‑time shopping intent analysis, smart optimisation, and audience extension Create internal tools and automations that make the team faster—dashboards, data pipelines, workflow hacks, and more Run integration experiments with publishers, retailers, data partners, and clean‑room platforms Work end‑to‑end within a product trio (Product Manager + Product Designer + Product Engineer) from discovery through build What makes this role different This role is ideal for someone who: Thrives in ambiguity and loves figuring out what to build—not just how to build it Ships functional prototypes fast using AI tools like Claude, Cursor, Lovable, v0, Figma Make, or similar Knows when AI‑generated code is “good enough” for an experiment and when proper engineering is needed for production Wants direct access to users, customers, and real data to inform product decisions Enjoys killing their own work when the data says it’s the right call This is a place where engineers don’t wait for tickets. You shape the product, challenge assumptions, and drive outcomes—not just outputs. What we expect in your first 60 days Ship your first working prototype or POC within two weeks Own at least one experiment end‑to‑end—from hypothesis to build to “kill or scale” decision Build or improve an internal tool that materially speeds up the team Form your own opinion on our stack and where AI tooling provides the biggest leverage What you bring Must‑haves Full‑stack capability—frontend, API, and database; nothing blocks you Fluency with AI coding tools and a portfolio that proves it Product thinking: you ask “should we build this?” before “how do I build it?” Comfort with ambiguity and rapid scoping Experience building MVPs/POCs that influenced real decisions Strong signals Side projects, apps, tools, automations you’ve built for fun or impact Ad‑tech, e‑commerce, marketplace, or distributed systems experience JVM (Java, Kotlin) and AWS background Comfort with metrics, experiment design, and pulling your own numbers A track record of killing your own experiments when data proved they shouldn’t ship Show us what you’ve built. That’s what matters. We work with AWS, Kotlin, Java, Spring, Kafka, TypeScript, Angular, Vue, Python, Terraform, Docker, GitHub Actions, and DataDog—but we care more about your ability to build than the tools you already know. AI tools are not optional here—they’re standard equipment. Why you'll love working here There are many reasons to come on board our team of talented professionals, but here are just a few… We are collaborative, fair, consciously inclusive, and flexible We trust, value, and support our people to make the difference We believe that diversity of thought and experience provides the platform for innovation and creativity We invest in the development of our people to drive our ambitions forward We offer a range of benefits (including your choice of tech) and a competitive package We offer a great work environment in an internationally successful enterprise in the online services industry At Team Internet, we believe in equal opportunities for everyone. We value diversity and make sure all applicants get a fair chance, because we know that our collective strength and diversity makes us stronger. If you need assistance completing an application for a position with us or need us to make any reasonable adjustments, please reach out to our Recruiting Team at talent@teaminternet.com