Senior PHP Engineer with AI / LLM

🏢 Summary: Senior PHP Backend Engineer role focused on building and scaling backend services for a modern AI-driven product platform. The position involves developing REST APIs, integrating AI/LLM services, and improving system architecture, performance, and scalability. You will contribute to technical decisions and support AI automation initiatives in a fully remote environment. 🗂️ Requirements: Strong commercial experience as PHP Backend Engineer or Senior PHP Developer, Very good knowledge of PHP 8+, Experience with Symfony and/or Laravel, Experience designing and developing REST APIs, Experience with MySQL or PostgreSQL, Experience with Redis, queues or background processing, Hands-on experience with AI/LLM tools (OpenAI API, Claude), Experience with backend architecture and integrations, English proficiency for daily technical communication 📃 Skills: PHP, Symfony, Laravel, REST, MySQL, PostgreSQL, Redis, Elasticsearch, OpenAI, Claude, LLM, AI, Git, Docker, Kubernetes, AWS, RabbitMQ, Kafka, OAuth2, JWT, TypeScript, JavaScript, NestJS, CI/CD 🏢 Description: ✅ Your responsibilities: ・Designing and developing backend services using PHP and modern backend frameworks ・Building and maintaining REST APIs , integrations and business logic for production systems ・Working with databases such as MySQL / PostgreSQL / Redis / Elasticsearch ・Supporting the development of AI-powered features using LLMs, OpenAI API, Claude or similar tools ・Working on AI automation, prompt engineering and backend integrations with AI services ・Improving application architecture, scalability, maintainability and performance ・Collaborating with product, engineering and business teams to translate requirements into technical solutions ・Taking ownership of technical decisions and supporting less experienced developers when needed ・Participating in code reviews, technical discussions and delivery planning 🧠 Our requirements: ・Strong commercial experience as a PHP Backend Engineer / Senior PHP Developer ・Very good knowledge of PHP 8+ and modern backend development practices ・Experience with frameworks such as Symfony and/or Laravel ・Good understanding of REST APIs , integrations and backend architecture ・Experience with relational databases, especially MySQL or PostgreSQL ・Experience with Redis , queues, messaging or background processing ・Practical interest or hands-on experience with AI / LLM tools, such as OpenAI API, Claude, GitHub Copilot, prompt engineering or AI automation ・English at a level allowing daily technical communication ⭐ Nice to have: ・Experience with TypeScript / JavaScript / NestJS ・Experience with Docker, Kubernetes, AWS or CI/CD pipelines ・Knowledge of RabbitMQ, Kafka or Symfony Messenger ・Understanding of software security topics such as OAuth2, JWT and input validation ・Experience with architectural approaches such as DDD, CQRS, Event Sourcing or Hexagonal Architecture 🌟 What we offer: ・100% remote work. ・Opportunity to work on a modern AI / ML product platform. ・Private healthcare and Multisport. ・Life insurance. ・Real influence on technical decisions and architecture. ・Exposure to modern AI, data, and product engineering challenges. ・Collaborative and supportive team environment.

🏢 Summary: The role focuses on designing, developing, and maintaining the backend of a high-performance Digital Services Platform using PHP 8+ and Symfony. It emphasizes clean architecture, automated testing, and secure integrations with external systems within a containerized cloud environment. The position involves REST API development, asynchronous messaging, and database optimization following DDD and SOLID principles. 🗂️ Requirements: Production experience with PHP 8+, Strong expertise in Symfony framework, Experience designing and maintaining REST APIs, Experience with third-party system integrations (ERP, payments, logistics), Strong knowledge of PostgreSQL and query optimization, Experience with RabbitMQ and asynchronous messaging, Experience using Redis for caching and session management, Practical experience with Docker and Docker Compose, Experience working with CI/CD pipelines, Understanding of SOLID principles and Domain-Driven Design, Experience writing automated tests and participating in code reviews 📃 Skills: PHP, Symfony, REST, PostgreSQL, RabbitMQ, Redis, Docker, CI/CD, DDD, SOLID 🏢 Description: co.brick talents — powered by AI, powered by people. The objective of this role is to design, develop, and maintain the backend of a high-performance Digital Services Platform. The focus is on ensuring stable, secure, and highly efficient system operations while enabling seamless integrations with external platforms. You will build clean, testable, and maintainable code in PHP 8+ and Symfony, manage REST APIs, configure asynchronous messaging, and champion architectural design patterns within a containerized cloud environment. Details Core Focus: Enterprise Backend Engineering & Integration. Architecture Style: Domain-Driven Design (DDD), Modular Monolith/Microservices, and SOLID principles. Methodology: Clean code development with mandatory automated testing, peer reviews, and automated CI/CD pipelines. Responsibilities Backend Development: Building and maintaining complex backend features using strictly typed PHP 8+ and advanced features of the language. Symfony Ecosystem: Leveraging foundational Symfony components including Dependency Injection, Messenger, Event Dispatcher, Serializer, Validator, Security, and Console commands. API Engineering: Designing, documenting, and versioning robust REST APIs featuring data validation, thorough error handling, token authorization, filtering, and pagination. System Integrations: Connecting the digital platform to external systems including ERP software, payment gateways, invoicing tools, warehouse/logistics managers, and B2B/B2C services with built-in fault tolerance. Data & Caching Layer: Architecting database structures, relational integrity, and indexing in PostgreSQL while utilizing Redis for caching, locking, rate limiting, and session management. Asynchronous Messaging: Setting up and managing event queues via RabbitMQ, ensuring proper implementation of retry mechanisms, dead-letter queues, and message idempotency. Containerization & Devops: Engineering local environments and service dependencies using Docker and Docker Compose, while integrating your code into automated CI/CD delivery pipelines. Requirements Languages & Frameworks: Production-grade programming skills in PHP 8+ and deep familiarity with the Symfony framework ecosystem. API & Integrations: Extensive practical experience designing REST APIs and handling third-party integrations (ERP, billing, payments, logistics). Data Storage & Messaging: Strong knowledge of PostgreSQL query optimization, database design patterns, RabbitMQ event streaming, and Redis cache tools. DevOps Infrastructure: Practical experience using Docker and Docker Compose for local deployment along with version control inside modern CI/CD setups. Software Design Philosophy: In-depth understanding of SOLID principles, Domain-Driven Design (DDD) , component modularity, and layered architectures. Quality Assurance: Strong commitment to writing automated tests , participating actively in peer code reviews , and keeping code highly testable.

🏢 Summary: Senior PHP Software Engineer role focused on building and maintaining advanced backend systems using PHP 8.4+ and Symfony 7.x within DDD and Hexagonal Architecture. The position involves designing scalable, event-driven solutions, developing REST APIs, and ensuring high code quality through comprehensive testing practices. The work includes integration with tools like Kafka, Redis, and MySQL in a mature engineering environment. 🗂️ Requirements: Very good knowledge of PHP 8.4+, Hands-on experience with Symfony 7.x (LTS), Practical experience with Magento, Experience designing REST APIs and using OpenAPI 3.x, Experience with DDD and Hexagonal Architecture, Experience with event-driven architecture, Experience with Apache Kafka, Practical knowledge of MySQL 8+ and ORM tools, Experience with Redis, Very good knowledge of PHPUnit, Experience with Test-First approach, Familiarity with Git and code review tools 📃 Skills: PHP, Symfony, Magento, REST, OpenAPI, DDD, Kafka, MySQL, Doctrine, Redis, MongoDB, PHPUnit, Git, Jira, Confluence 🏢 Description: Join our team as a Senior PHP Software Engineer (Symfony) and work on advanced backend solutions built with the latest technologies. We are looking for someone who thrives in complex architecture, enjoys designing scalable systems, and cares deeply about code quality. About the project You will be developing the backend for modern systems using PHP 8.4+, Symfony 7.x (LTS) , DDD / Hexagonal Architecture , event‑driven communication , and tools like Kafka, Redis, MySQL . We follow best engineering practices, maintain clear documentation, and rely on a mature testing and delivery approach. Your responsibilities Designing and developing backend services in PHP and Symfony Creating and maintaining REST APIs in line with OpenAPI 3.x standards Implementing solutions in an event‑driven architecture Working with DDD and Hexagonal Architecture Collaborating with the team on process and data‑flow design Preparing unit tests, integration tests, contract tests, and event‑processing tests Participating in code reviews and ensuring high code quality Creating and updating clear and maintainable technical documentation Requirements Very good knowledge of PHP 8.4+ Hands‑on experience with Symfony 7.x (LTS) Practical experience with Magento or Laravel Understanding of REST API design and OpenAPI 3.x Experience with DDD and Hexagonal Architecture Ability to work with event‑driven architecture Experience with Apache Kafka Practical knowledge of MySQL 8+ and ORM tools (e.g., Doctrine) Experience with Redis Knowledge of MongoDB — nice to have Very good knowledge of PHPUnit Experience with the Test‑First approach Familiarity with Git , code review practices, and tools like Jira and Confluence Why join us Diverse projects and the opportunity to work with current technology stacks A stable collaboration within an experienced and supportive team Clear processes and a mature approach to architecture and code quality Real influence on project decisions and technical solutions

🏢 Summary: Lead the design and long-term ownership of a scalable integrations platform connecting AI-powered translation tools with external services. Build and evolve multi-tenant backend systems, APIs, and event-driven architectures while improving CI/CD, observability, and engineering standards. Drive technical decisions and mentor the team to deliver high-quality, reliable integrations. 🗂️ Requirements: 7+ years building complex backend systems, Strong experience with Node.js and PHP, Experience with microservices and monolithic architectures, Proven work with API integrations and API versioning, Experience with message queues and event-driven architectures, Strong knowledge of relational databases (PostgreSQL), Experience with cloud platforms (AWS or similar), Experience with CI/CD, testing, and observability practices, Ability to design systems and create PoCs, RFCs, ADRs, Experience with AI-assisted development tools 📃 Skills: Node.js, PHP, Microservices, APIs, Webhooks, PostgreSQL, AWS, CI/CD, MessageQueues, EventDrivenArchitecture, GitHubCopilot, Cursor 🏢 Description: Join our Integrations team and help build a robust, scalable platform that connects our AI-powered translation and localization tools with hundreds of services our customers rely on daily. This is more than coding—it’s about architecting a system that makes workflows effortless, developer experience smooth, and enables product teams to deliver value faster. ✅ Your responsibilities: Lead design, development, and long-term ownership of the integrations platform and services. Build scalable, multi-tenant systems using Node.js, PHP, microservices, and a PHP monolith. Implement API integrations, webhooks, polling mechanisms, message queues, and event-driven architectures. Improve development lifecycle, CI/CD, testing, observability, and operational excellence. Mentor and elevate team skills through code reviews, knowledge sharing, and technical guidance. Pioneer AI-powered development workflows and tools within the team. 🧠 Our requirements: 7+ years building and maintaining complex backend systems. Strong experience with Node.js and PHP, modern services, and monolithic architectures. Proven experience in integrations: API versioning, message queues, event-driven architectures. Solid understanding of APIs, relational databases (e.g., PostgreSQL), and cloud services (AWS or similar). Strong judgment in system design and technical decision-making (PoCs, RFCs/ADRs). Commitment to testing, observability, operational excellence, and high-quality code. Experience with AI-assisted development tools (e.g., GitHub Copilot, Cursor). Excellent problem-solving, communication, and leadership skills. 🌟 What we offer: Stable employment in a fast-growing company Flexible and remote-friendly working model Health and wellbeing benefits Continuous learning and development opportunities Modern equipment and comfortable work environment

🏢 Summary: Lead the design and long-term ownership of a scalable integrations platform connecting AI-powered translation tools with external services. Build and maintain multi-tenant backend systems using Node.js and PHP, implementing APIs, webhooks, and event-driven architectures. Drive system design, CI/CD, testing, and operational excellence within a modern engineering environment. 🗂️ Requirements: 7+ years of experience building complex backend systems, Strong experience with Node.js and PHP, Experience with microservices and monolithic architectures, Proven experience with API integrations and versioning, Experience with message queues and event-driven architectures, Strong knowledge of relational databases (PostgreSQL), Experience with cloud platforms (AWS or similar), Experience with CI/CD pipelines and automated testing, Commitment to observability and high-quality code, Experience with AI-assisted development tools 📃 Skills: Node.js, PHP, Microservices, Monolith, APIs, Webhooks, MessageQueues, EventDriven, PostgreSQL, AWS, CI/CD, Testing, Observability, GitHubCopilot, Cursor 🏢 Description: Join our Integrations team and help build a robust, scalable platform that connects our AI-powered translation and localization tools with hundreds of services our customers rely on daily. This is more than coding—it’s about architecting a system that makes workflows effortless, developer experience smooth, and enables product teams to deliver value faster. ✅ Your responsibilities: Lead design, development, and long-term ownership of the integrations platform and services. Build scalable, multi-tenant systems using Node.js, PHP, microservices, and a PHP monolith. Implement API integrations, webhooks, polling mechanisms, message queues, and event-driven architectures. Improve development lifecycle, CI/CD, testing, observability, and operational excellence. Mentor and elevate team skills through code reviews, knowledge sharing, and technical guidance. Pioneer AI-powered development workflows and tools within the team. 🧠 Our requirements: 7+ years building and maintaining complex backend systems. Strong experience with Node.js and PHP, modern services, and monolithic architectures. Proven experience in integrations: API versioning, message queues, event-driven architectures. Solid understanding of APIs, relational databases (e.g., PostgreSQL), and cloud services (AWS or similar). Strong judgment in system design and technical decision-making (PoCs, RFCs/ADRs). Commitment to testing, observability, operational excellence, and high-quality code. Experience with AI-assisted development tools (e.g., GitHub Copilot, Cursor). Excellent problem-solving, communication, and leadership skills. 🌟 What we offer: Stable employment in a fast-growing company Flexible and remote-friendly working model Health and wellbeing benefits Continuous learning and development opportunities Modern equipment and comfortable work environment

🏢 Summary: Lead the design and long-term ownership of a scalable integrations platform connecting AI-powered translation tools with external services. Build and maintain multi-tenant backend systems using Node.js and PHP, implementing APIs, event-driven architectures, and cloud-based solutions. Drive technical excellence across system design, CI/CD, testing, observability, and AI-assisted development workflows. 🗂️ Requirements: 7+ years experience building complex backend systems, Strong experience with Node.js and PHP, Experience with microservices and monolithic architectures, Proven experience with API integrations and API versioning, Experience with message queues and event-driven architectures, Knowledge of relational databases (PostgreSQL), Experience with cloud platforms (AWS or similar), Experience in system design and technical decision-making, Commitment to testing, observability, and code quality, Experience with AI-assisted development tools 📃 Skills: Node.js, PHP, Microservices, APIs, PostgreSQL, AWS, CI/CD, Webhooks, MessageQueues, EventDriven, GitHubCopilot, Cursor 🏢 Description: Join our Integrations team and help build a robust, scalable platform that connects our AI-powered translation and localization tools with hundreds of services our customers rely on daily. This is more than coding—it’s about architecting a system that makes workflows effortless, developer experience smooth, and enables product teams to deliver value faster. ✅ Your responsibilities: Lead design, development, and long-term ownership of the integrations platform and services. Build scalable, multi-tenant systems using Node.js, PHP, microservices, and a PHP monolith. Implement API integrations, webhooks, polling mechanisms, message queues, and event-driven architectures. Improve development lifecycle, CI/CD, testing, observability, and operational excellence. Mentor and elevate team skills through code reviews, knowledge sharing, and technical guidance. Pioneer AI-powered development workflows and tools within the team. 🧠 Our requirements: 7+ years building and maintaining complex backend systems. Strong experience with Node.js and PHP, modern services, and monolithic architectures. Proven experience in integrations: API versioning, message queues, event-driven architectures. Solid understanding of APIs, relational databases (e.g., PostgreSQL), and cloud services (AWS or similar). Strong judgment in system design and technical decision-making (PoCs, RFCs/ADRs). Commitment to testing, observability, operational excellence, and high-quality code. Experience with AI-assisted development tools (e.g., GitHub Copilot, Cursor). Excellent problem-solving, communication, and leadership skills. 🌟 What we offer: Stable employment in a fast-growing company Flexible and remote-friendly working model Health and wellbeing benefits Continuous learning and development opportunities Modern equipment and comfortable work 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: 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 Backend Engineer role focused on designing, building, and maintaining production backend systems and AI-driven workflows in a fully onsite Warsaw office environment. The position involves ownership of system architecture, APIs, distributed systems, and cloud infrastructure from design through production. Candidates will collaborate across teams, improve engineering processes with AI tools, and contribute to scalable, reliable solutions. 🗂️ Requirements: Strong experience as a senior backend engineer on production systems, Excellent Python programming skills, Understanding of distributed systems, Experience with AWS or Azure cloud platforms, Knowledge of SQL and NoSQL databases, Experience with asynchronous processing and service design, Ability to design and deliver systems from idea to production, Strong written and spoken communication skills, Regular use of AI development tools, Ability to work fully onsite in Warsaw 📃 Skills: Python, AWS, Azure, SQL, NoSQL, APIs, AI, TypeScript, GitHub, Copilot, Claude, OpenAI, Codex 🏢 Description: Please note: This role requires working from our office in Warsaw city centre 5 days a week . This is a fully on-site position , and remote or hybrid work is not available . 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.