Middle FullStack Software Engineer

🏢 Summary: Lead FullStack Engineer role focused on building and scaling high-traffic, public-facing web platforms for a large online marketplace. The position involves leveraging AI tools within the SDLC, owning end-to-end development processes, and delivering performant, production-ready solutions across frontend and backend systems. 🗂️ Requirements: 5+ years of experience building reliable, scalable, highly available systems, Strong knowledge of software architecture and design patterns, Experience applying clean code principles and coding standards, Proficiency with AI development tools and integrating them into SDLC, Experience with AI frameworks, Strong backend development experience with C# or Node.js, Strong proficiency in TypeScript, Strong experience with SQL and NoSQL databases, Strong frontend development skills (HTML, CSS, JavaScript), Experience with component-based frameworks and SSR, Experience with cloud infrastructure and containerization tools, Experience building and consuming APIs in service-based architectures, Experience with CI/CD pipelines, Experience with logging and monitoring tools, Experience with unit testing (backend and frontend), Upper-intermediate English, Availability to work in required time zones 📃 Skills: C#, Node.js, TypeScript, SQL, NoSQL, GraphQL, Redis, HTML, CSS, JavaScript, React, Next.js, Vue.js, Angular, AWS, Terraform, Docker, Git, CI/CD, Datadog, NewRelic, LangChain, Vercel, ChatGPT, Codex 🏢 Description: About the client: Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers. Responsibilities: Developing fast, high-traffic public-facing websites Explore new technologies and help the team to use them Work using AI tools and apply them to the SDLC Following software development best practices while delivering the work Following testing principles while testing your own code to ensure production readiness Follow the philosophy of: you-build-it-you-run-it (be responsible for the SDLC processes) Requirements: 5+ years developing reliable, highly available, and scalable software systems Strong understanding of software architecture and design patterns Firm grasp of clean code principles and coding standards Strong proficiency using AI tooling , such as ChatGPT/Codex, for rapid development Experience integrating AI tooling into your development environment for streamlined usage Experience with AI Frameworks like Vercel AI SDK, LangChain, etc. Strong proficiency with backend development with C# or Node.js Strong proficiency with TypeScript Strong proficiency with SQL& NoSQL datastores (GraphQL, Redis) Strong proficiency with frontend development (HTML, CSS, JavaScript) Strong proficiency with component-based frameworks and SSR (Next.js/React or Vue.js) or Angular with the desire to learn React/ Vue.js. Hands-on experience developing and maintaining 3rd party content management systems Knowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and Docker Experience with APIs and developing in a service-based application environment Experience building optimized UIs for performance Proficiency with version control systems such as Git Experience working within a formal CI/CD pipeline Experience with logging, monitoring, and alerting services like Datadog, Newrelic Solid approach to testing and ensuring quality of code, Unit testing, backend, and frontend At least Upper-intermediate English level This role requires mandatory timezone coverage: work must align with the Toronto (ET) timezone for LATAM hours and 13:00–21:00 EET for EU hours approximately. We offer*: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits *not applicable for freelancers

🏢 Summary: Senior Full-Stack Engineer role focused on designing and developing full-stack cloud solutions for a high-traffic online marketplace. The position involves building and maintaining scalable web applications, leveraging AI-driven development practices, and working with event-driven microservices architectures. The role includes CI/CD management, cloud migrations, and performance optimization within a distributed agile team. 🗂️ Requirements: Canadian timezone work hours (EDT), 4+ years experience with C# or .NET for web development, 4+ years experience with React for web development, Experience with Azure and Azure to AWS migration, Expert proficiency in GenAI-driven development and GitHub Copilot/Codex integration, Deep understanding of AI agents and autonomous task orchestration, Mastery of prompt engineering techniques (CoT, Few-Shot, prompt optimization), Experience with Kafka and SQL, Strong knowledge of event-driven and microservices architecture, Experience with Application Insights, Experience with unit, component, and integration testing, Experience with Azure DevOps and JIRA, Experience working with agile methodologies (ScrumBan/Kanban, Gitflow) 📃 Skills: C#, .NET, React, Azure, AWS, GenAI, GitHub, Copilot, Codex, Kafka, SQL, ApplicationInsights, Microservices, CI/CD, AzureDevOps, JIRA, Gitflow, ScrumBan, Kanban 🏢 Description: We are looking for a Senior Full-Stack Engineer to join our team, Our customer is the European online car market with over 30 million monthly users, with a market presence in 18 countries. As a Senior Fullstack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers. Responsibilities: Design and develop full-stack cloud solutions from technical analysis to integration testing. Support existing systems Mentor junior engineers on design patterns, code reviews, testing practices, and scalable architecture. Establish documentation standards across teams. Conduct root cause analysis and collaborate with production support to resolve issues. Evaluate third-party software with business and engineering teams. Maintain CI/CD pipelines for applications. Requirements: Canadian timezone work hours (EDT) 4+ years of experience with C# or .NET  for web application development 4+ years of experience with React for web application development Experience with Azure, including migration from Azure to AWS Expert proficiency in GenAI-driven development, GitHub Copilot/Codex integration, rapid prototyping, automated refactoring, and AI-accelerated debugging Deep understanding of AI agents, autonomous task orchestration, reasoning engines, tool-use integration, and multi-step workflow automation Mastery of iterative prompting. Chain-of-Thought (CoT), Few-Shot prompting, output validation, and prompt optimization for production-grade code Familiarity with Kafka, SQL, and performance optimization Strong understanding of event-driven and microservices architecture Experience, Application Insights, and responsive front-end design using React Background in high-traffic websites, performance tuning, and security Ability to communicate technical solutions effectively Expertise in unit, component, and integration testing Experience with Azure DevOps, and JIRA in distributed teams Solid grasp of agile methodologies, including ScrumBan/Kanban and Gitflow Nice to Have : Previous DevOps Experience is a great advantage Experience with Java and Scala Experience with observability tools like Datadog Proficiency with  Java/Spring Boot for building APIs and web applications - nice to have Experience with AWS Previous experience with GitHub This job opportunity for Canadian time zone.

🏢 Summary: Lead Full Stack Engineer role focused on rebuilding and evolving an auto repossession and remarketing platform with end-to-end ownership. The position emphasizes AI-first engineering, integrating LLMs and GenAI tools to improve system quality and developer productivity. You will design, build, and operate scalable production systems while shaping architecture and technical direction. 🗂️ Requirements: 7+ years of software engineering experience in a Lead role, Strong experience with TypeScript, Strong experience with React and Next.js, Strong experience with .NET Core / modern .NET, Strong experience with C#, Experience building and operating production systems, Strong system design and architectural skills, Experience integrating AI and Generative AI into engineering workflows, Experience with testing, performance optimization, and clean code practices, Availability to work Canadian time zone hours 📃 Skills: TypeScript, React, Next.js, .NET, C#, GenAI, LLMs, AI, DevOps, Architecture, Testing, Performance 🏢 Description: (#5202) Canadian time zone work hours. About the client: Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead Full Stack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers. About the role: We’re looking for a Lead Full Stack Software Engineer who takes end-to-end ownership, thrives in ambiguity, and wants to build systems that matter. This role is central to rethinking and rebuilding our clients’ auto repossession and remarketing platform, a system that directly influences how vehicles are recovered, processed, and remarketed across the big automotive ecosystem. This is an AI-first engineering role—not in name, but in practice. You’ll continuously evaluate where AI (including LLMs and agentic tools) can meaningfully improve engineering velocity, system quality, and operational efficiency, while applying strong judgment about where it should not be used. You’ll help shape architecture, influence technical direction, and own what you build—from design to production. Responsibilities: Build and Evolve Critical Systems. Rethink and reshape core workflows based on a deep understanding of auto repossession and remarketing processes. Design and implement scalable, resilient systems using modern architectural principles: clear service boundaries, modularity, and observability. Incorporate LLMs and AI-driven components to improve data validation, document processing, and operational decision-making. Use AI-assisted and agentic coding tools to accelerate development—while maintaining high standards for correctness, security, and maintainability. Own Architecture & Technical Decisions. Drive architectural discussions and decisions, balancing pragmatism with technical excellence. Set and enforce high-quality bars for new services and modules, with a focus on testability, performance, and reliability. Identify and reduce technical debt in ways that measurably improve developer velocity and system robustness. Build With an Ownership Mindset Work across the full software lifecycle: design, build, deploy, operate, and iterate. Embrace a “you build it, you own it” DevOps mindset alongside your team. Make thoughtful trade-offs between effort, quality, and user value—always with accountability for outcomes. Work closely with product managers, designers, and other engineers in an agile, cross-functional team. Contribute ideas, challenge assumptions, and continuously improve how we build software. Mentor and support other engineers through code reviews, design discussions, and technical leadership. Requirements: A Lead (7+ years of experience) engineer who owns results, not just implementations. Someone who enjoys complex problem-solving and isn’t afraid of legacy systems—or changing them. Strong engineering fundamentals: clean code, testing discipline, system design, and performance awareness. Strong experience with TypeScript and modern React / Next.js Strong experience building production systems with .NET (Core / modern .NET preferred). Strong experience building production systems with C# Comfort operating in production environments and learning from real-world feedback. A builder’s mindset: If you can think it, you can build it. If you build it, you own it. Strong must: experience leveraging AI, Generative AI (GenAI) to enhance engineering productivity, automate repetitive tasks, and optimize workflows. You should demonstrate the ability to integrate AI-driven solutions into your daily work — such as code generation, debugging, reviews, documentation, and decision support—to improve efficiency for yourself and your teams. A proactive approach to exploring and implementing AI tools that drive innovation and streamline development processes is highly valued Canadian time zone work hours We offer: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits

🏢 Summary: Lead FullStack Engineer role focused on building and scaling high-traffic, public-facing web platforms for a major European online marketplace. The position involves full SDLC ownership, AI-assisted development, and delivering highly available, performance-optimized solutions using modern cloud and frontend technologies. Work includes backend and frontend development, cloud infrastructure, CI/CD, and integration of AI frameworks into the development workflow. 🗂️ Requirements: 5+ years of experience building reliable, scalable software systems, Strong knowledge of software architecture and design patterns, Proficiency in C# and TypeScript, Strong experience with SQL and NoSQL databases, Strong frontend development experience (HTML, CSS, JavaScript), Experience with React, Next.js, Vue.js or Angular, Experience with AI tools (ChatGPT, Codex) in development workflows, Experience with AI frameworks (Vercel AI SDK, LangChain), Experience with AWS, Terraform, Docker, Experience building and consuming APIs in service-based architectures, Experience with CI/CD pipelines, Experience with logging and monitoring tools (Datadog, NewRelic), Strong unit testing skills (backend and frontend), Experience with Git, Upper-intermediate English, Availability to work in required time zone (ET or 13:00–21:00 EET) 📃 Skills: C#, TypeScript, SQL, NoSQL, GraphQL, Redis, HTML, CSS, JavaScript, React, Next.js, Vue.js, Angular, ChatGPT, Codex, LangChain, Vercel, AWS, Terraform, Docker, Git, CI/CD, Datadog, NewRelic 🏢 Description: Аbout us: N-iX i s a software development service company that helps businesses across the globe develop successful software products. Founded in 2002 in Lviv, N-iX has come a long way and increased its presence in eight countries Poland, Ukraine, Sweden, Bulgaria, Malta, the UK, the US, and Colombia. Today, we are a strong community of 2,000+ professionals and a reliable partner for global industry leaders and Fortune 500 companies. About the client: Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers. Responsibilities: Developing fast, high-traffic public-facing websites Explore new technologies and help the team to use them Work using AI tools and apply them to the SDLC Following software development best practices while delivering the work Following testing principles while testing your own code to ensure production readiness Follow the philosophy of: you-build-it-you-run-it (be responsible for the SDLC processes) Requirements: 5+ years developing reliable, highly available, and scalable software systems Strong understanding of software architecture and design patterns Firm grasp of clean code principles and coding standards Strong proficiency using AI tooling, such as ChatGPT/Codex, for rapid development Experience integrating AI tooling into your development environment for streamlined usage Experience with AI Frameworks like Vercel AI SDK, LangChain, etc. Strong proficiency with the following technologies: C#+Typescript Strong proficiency with SQL & NoSQL datastores (GraphQL, Redis) Strong proficiency with frontend development (HTML, CSS, JavaScript) Strong proficiency with component-based frameworks and SSR (Next.js/React or Vue.js) or Angular with the desire to learn React/ Vue.js. Hands-on experience developing and maintaining 3rd party content management systems Knowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and Docker Experience with APIs and developing in a service-based application environment Experience building optimized UIs for performance Proficiency with version control systems such as Git Experience working within a formal CI/CD pipeline Experience with logging, monitoring, and alerting services like Datadog, Newrelic Solid approach to testing and ensuring quality of code, Unit testing, backend, and frontend At least Upper-intermediate English level This role requires mandatory timezone coverage: work must align with the Toronto (ET) timezone for LATAM hours and 13:00–21:00 EET for EU hours approximately. We offer*: Flexible working format - remote, office-based or flexible A competitive salary and good compensation package Personalized career growth Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more) Active tech communities with regular knowledge sharing Education reimbursement Memorable anniversary presents Corporate events and team buildings Other location-specific benefits *not applicable for freelancers

🏢 Summary: Senior Fullstack Engineer role focused on delivering full-stack solutions within an AI-integrated SDLC where AI is embedded across planning, development, review, testing, and deployment. The position combines backend and frontend engineering with AI orchestration, automation, and cloud-native architecture in a remote-first setup. The engineer will also evolve shared AI toolchains and contribute to architectural and code quality standards. 🗂️ Requirements: Team-level AI-integrated SDLC experience across planning, development, review, testing, deployment, Shared AI toolchain management under version control, Hands-on use of Claude Code, GitHub Copilot, Cursor or equivalent as team tools, Building and maintaining custom AI skills and sub-agents for team use, Experience with parallel AI agent orchestration, Spec-driven development using OpenAPI, ADRs, PRDs as AI context, AI-assisted code review integrated into PR process, Working knowledge of AI orchestration frameworks, Backend development with .NET / C# and ASP.NET Core, Frontend development with TypeScript and React or Angular, Experience with SQL databases and ORM frameworks, Experience with Docker and Kubernetes, Experience with CI/CD pipelines, Experience with cloud platforms (Azure, AWS, or GCP) 📃 Skills: C#, .NET, ASP.NET, SQL, SQLServer, PostgreSQL, EFCore, OAuth, JWT, Python, Java, Node.js, TypeScript, JavaScript, React, Angular, LangChain, LlamaIndex, CrewAI, Docker, Kubernetes, GitHubActions, AzureDevOps, Azure, AWS, GCP, OpenAPI, CQRS, DDD, EventSourcing, Microservices 🏢 Description: We are looking for a Senior Fullstack Engineer who combines deep technical expertise with real, team-level experience working in an AI-integrated software development lifecycle. Individual use of AI coding assistants is not sufficient for this role. We are specifically looking for engineers who have worked in teams where AI was embedded into every phase of delivery — from planning and design through development, review, testing, and deployment. We follow a remote-first setup with no mandatory regular office visits for this position. From time to time, you may be invited to join in-person meetings in one of our offices (Warsaw, Lodz, Wroclaw, Gdansk, or Bialystok), for example for client visits or team reunions. AI-First Requirements Experience working in an AI-enabled engineering team is mandatory — not a personal workflow preference. You have been part of a team where AI was systematically embedded across all delivery phases: planning, development, review, testing, and deployment. You can speak from direct experience about how it worked, what failed, and what you would change. Specific mandatory requirements: Team-level AI-integrated SDLC experience — shared toolchain, shared configurations, shared assets under version control Hands-on with Claude Code, GitHub Copilot, Cursor, or equivalent as a team tool, not only personal usage Built and maintained custom skills and sub-agents used across a team, not just personally Experience with parallel agent orchestration for concurrent workstream execution Disciplined plan → review plan → execute approach with AI involved at every phase Maintained shared prompt libraries, skill repositories, or agent configurations in version control AI-assisted code review integrated into the PR process: CodeRabbit, Copilot review, or similar Experience with spec-driven or document-driven development where structured specifications (OpenAPI, ADRs, PRDs) serve as AI context inputs, not just human references Working knowledge of at least one AI orchestration framework: LangChain, LlamaIndex, Microsoft Agent Framework, CrewAI, or equivalent Automation-first mindset: proactively identify repetitive or inefficient parts of current work and automate them using AI and other available tools. Cost-aware AI usage: understanding how AI credits are consumed across different tools, models, and workflows, and ability to choose the most appropriate model or approach for each task. Technical Requirements Backend: .NET / C#, ASP.NET Core, SQL Server / PostgreSQL, EF Core, OAuth 2.0 / JWT. Python, Java, or Node.js is a strong plus. Frontend: TypeScript, JavaScript, React(preferable) and/or Angular, state management, async patterns, frontend testing. Architecture: Full spectrum from monolith to microservices — DDD, CQRS, Event Sourcing, event-driven design, message brokers. Infrastructure: Docker, Kubernetes, CI/CD (GitHub Actions / Azure DevOps), Azure / AWS / GCP, structured observability. Responsibilities Deliver full-stack features to a high standard of quality, performance, and reliability Contribute to architectural decisions and system design trade-offs Evolve and maintain the team's shared AI toolchain across all SDLC phases Conduct code reviews including AI-assisted tooling; uphold and enforce engineering best practices Proactively surface risks, bottlenecks, and security concerns Communicate and collaborate directly with clients in English Mentor engineers on both technical fundamentals and AI-augmented workflow practices Professional Qualities Ownership mindset · Strong written and verbal English · Comfortable in client-facing roles · Raises the AI workflow maturity of those around them

🏢 Summary: Mid-level Full Stack Engineer role focused on building and shipping end-to-end features in a TypeScript monorepo using Next.js and Node.js, while leveraging AI tools for daily development. The position involves developing backend services, integrating AI agent workflows, and deploying cloud-based infrastructure. It combines product-focused engineering with hands-on AI-enabled platform development. 🗂️ Requirements: 2–4 years commercial software engineering experience, Strong TypeScript and JavaScript knowledge, Hands-on experience with React and Next.js, Backend development experience with Node.js, Experience with PostgreSQL and ORM usage, Experience building and consuming REST APIs, Understanding of cloud infrastructure concepts, Experience with Git and CI/CD pipelines, Experience with code quality tools, Experience working in a monorepo, Regular use of AI-assisted development tools 📃 Skills: TypeScript, JavaScript, React, Next.js, Node.js, Express, Hono, Prisma, PostgreSQL, pgvector, MongoDB, Mongoose, REST, Git, CI/CD, ESLint, Prettier, Turborepo, Mastra, Vercel, GCP, Terraform, Datadog, OpenTelemetry, Docker 🏢 Description: Overview We're looking for a Mid Full Stack Engineer who builds end-to-end features across our Next.js frontend and Node.js backend — and uses AI tools daily to ship faster. You'll work in a modern TypeScript monorepo powering an AI-enabled platform, contributing to both the product and the AI agent infrastructure behind it. This isn't an ML research role — it's a hands-on engineering role where AI is part of your daily workflow and the product you're building. Key Responsibilities Build and ship full-stack features end-to-end in a TypeScript/Next.js/React monorepo Develop and maintain backend services using Node.js, Hono, and Express Work with Prisma ORM and PostgreSQL (with pgvector) and MongoDB via Mongoose Contribute to AI agent workflows built on Mastra and the Vercel AI SDK Use AI coding tools (Cursor, Claude, Copilot) daily to accelerate development Deploy and maintain services on GCP Cloud Run with Terraform Improve observability using Datadog APM/RUM and OpenTelemetry Collaborate with product, design, and engineering in an agile environment Write clean, testable code and participate in code reviews Required Qualifications Engineering (2–4 years commercial experience): Strong TypeScript and JavaScript fundamentals Hands-on experience with React and Next.js (App Router) Backend experience with Node.js (Express, Hono, or similar) Working knowledge of relational databases (PostgreSQL) and an ORM (Prisma preferred) Familiarity with REST APIs and basic cloud infrastructure concepts Understanding of Git workflows, CI/CD pipelines, and code quality tools (ESLint, Prettier) Comfortable working in a monorepo (Turborepo experience is a plus) AI Mindset & Tooling: Regularly uses AI-assisted development tools (Cursor, Claude, GitHub Copilot) Curious about LLM integrations and AI SDK patterns — willing to learn Mastra and Vercel AI SDK Uses AI for real productivity gains, not just experimentation Product & Collaboration: Understands the "why" behind features, not just the "how" Comfortable working closely with product and design stakeholders Good English communication skills (written and spoken) Nice-to-Have Experience with Mastra or similar AI agent frameworks Familiarity with GCP (Cloud Run, Cloud SQL, Artifact Registry) Terraform or other IaC experience MongoDB/Mongoose experience Tailwind CSS and Radix UI / shadcn component libraries Experience with Clerk authentication Exposure to observability stacks (Datadog, Langfuse, OpenTelemetry) Familiarity with Docker and containerized deployments

🏢 Summary: Opportunity for a Middle Full Stack Java Engineer to design and develop APIs and microservices in a large-scale retail environment, ensuring high availability, code quality, and continuous deployment. The role combines backend development with modern frontend technologies and automated testing in an Agile setup. You will contribute to scalable, resilient services and collaborate closely with product and QA teams. 🗂️ Requirements: 4+ years of software development experience, 3+ years of experience with Java, Experience with Spring Framework and Maven, Strong knowledge of React and TypeScript, Experience with microservices architecture, Experience with REST APIs and OpenAPI, Proficiency in OOP, OOD, DDD, design patterns, Experience with relational databases, Experience with MongoDB, Experience with AWS, Azure, OpenShift or Kubernetes, Experience with automated testing, Experience working in Agile environments, Upper-Intermediate English level 📃 Skills: Java, Maven, Spring, React, Redux, Redux-Saga, TypeScript, ES6, CSS3, SCSS, HTML5, REST, OpenAPI, Microservices, MongoDB, SQL, Kafka, AWS, Azure, OpenShift, Kubernetes, GrayLog, Grafana 🏢 Description: (#4708) Position Overview: We are looking for a skilled Middle Full Stack Java Engineer to join our engineering team. Our client is one of the world's largest fashion retailers selling in 215 markets through its online platform or its 6,477 stores in 95 markets. By working closely together as a single company globally focused on the key elements of fashion production – design, manufacture, distribution, and retail.All the production is founded on three pillars – flexibility, digital integration, and sustainability. Responsibilities: Participate actively and constantly in the design and development of APIs Ensure the availability and resilience of its services that help the development of the company’s business Ensure the quality of development and code cleanliness (Clean Code) Continuously perfect our style guides, design, and code patterns as well as our React component library Implement the scripts for the automation of the test cases Automatic and manual exploratory execution during the development to verify that the acceptance criteria are covered Maintain and evolve automated test cases with QA Work in close contact with the Product Owner and support in the technical definition of product backlog items Guarantee continuous deployment, write qualitative, maintainable code with extensive test coverage in a fast-paced professional software engineering environment Suggest technical and functional improvements to add value to the product Requirements: 4 years of software development experience, including 3+ years in Java (Maven, Spring Framework, Spring Web Applications) Frontend skills: React, Redux, Redux-Saga, TypeScript, ES6, CSS3/SCSS, HTML5, responsive design, frontend testing, performance optimization Experience developing and deploying microservices, REST interfaces, and OpenAPI Strong OOP, OOD, DDD, and design patterns proficiency Working knowledge of relational databases and NoSQL (MongoDB) Experience with Kafka/Kafka Streaming (optional) Experience with AWS, Azure, OpenShift, and Kubernetes Familiarity with GrayLog and Grafana Experience in Agile environments Excellent communication, organizational, and facilitation skills Upper-Intermediate level of English

🏢 Summary: Remote-first AI-First Fullstack Engineer role focused on building and maintaining full-stack applications while deeply integrating AI tools into the development workflow. The position emphasizes advanced use of AI coding assistants, agent-based workflows, and structured AI planning alongside strong backend and frontend engineering skills. Engineers contribute to architecture, code quality, and continuous improvement of AI-augmented practices. 🗂️ Requirements: 3+ years commercial experience with .NET and C#, Experience building REST APIs, middleware, and authentication flows (OAuth 2.0, OpenID Connect, JWT), Hands-on experience with AI coding assistants (Claude Code, GitHub Copilot, Cursor or equivalent), Understanding of AI agents and sub-agents and their composition, Experience creating or using custom AI skill definitions, Familiarity with AI planning workflows for structured implementation plans, Ability to perform prompt engineering and critically evaluate AI outputs, Experience configuring project-level AI instructions (e.g., copilot-instructions.md, CLAUDE.md), Solid proficiency in JavaScript and TypeScript, Practical experience with React or Angular, Experience with SQL databases and ORMs, Knowledge of CI/CD pipelines, Experience with Docker, Fluent English communication for technical collaboration 📃 Skills: .NET, C#, REST, OAuth2, OpenID, JWT, SQL, ORM, NoSQL, JavaScript, TypeScript, React, Angular, Python, Java, Node.js, Docker, Kubernetes, GitHubActions, AzureDevOps, Azure, AWS, GCP, CI/CD, DDD, CQRS 🏢 Description: We are looking for an AI-First Fullstack Engineer who is actively building a real AI-augmented development practice — not just using autocomplete. You will work across varied client engagements, contribute to meaningful technical decisions, and be expected to grow quickly in an environment that takes AI tooling seriously. This is a role for engineers who are intentional about how they use AI and want to develop that skill alongside their core technical craft. We follow a remote-first setup with no mandatory regular office visits for this position. From time to time, you may be invited to join in-person meetings in one of our offices (Warsaw, Lodz, Wroclaw, Gdansk, or Bialystok), for example for client visits or team reunions. Responsibilities Develop and maintain full-stack features with attention to quality, performance, and reliability Apply AI tools actively throughout your workflow: generation, refactoring, review, testing, and research Participate in architectural and design discussions — contribute ideas, ask good questions, and learn from senior engineers Write clean, reviewable code and actively engage in code reviews Communicate clearly with the team and client stakeholders in English Flag risks, blockers, and technical concerns early Continuously refine your AI workflow and share learnings with the team AI-First Requirements Must have: Hands-on experience with Claude Code, GitHub Copilot, Cursor, or equivalent AI coding assistants Understanding of agents and sub-agents: what they are, how they are composed, and when to use them Experience with custom skills: creating or using reusable AI skill definitions that extend tool capabilities beyond defaults Familiarity with AI planning workflows: using AI to generate structured implementation plans (e.g. task breakdowns, step-by-step plans stored as files or tickets) before generating code Prompt engineering sufficient to produce reliable, high-quality output; ability to critically evaluate and override AI suggestions when needed Experience building or configuring project-level AI instructions (e.g. copilot-instructions.md , CLAUDE.md , or similar) to shape agent behavior at the repo level Nice to have: Awareness of how AI tools fit into different SDLC phases: requirements analysis, design, implementation, code review, testing, and documentation — not just code generation Practical experience orchestrating multiple AI agents in parallel for concurrent task execution Familiarity with agentic loop patterns: tool use, reflection, iterative self-correction Technical Requirements 3+ years of commercial experience with .NET / C# — REST APIs, middleware, dependency injection, authentication flows: OAuth 2.0, OpenID Connect, JWT SQL databases and ORMs; NoSQL familiarity is a plus Additional experience in Python, Java, or Node.js is a plus Solid proficiency in JavaScript and TypeScript Practical experience with React (preferable) and/or Angular Familiarity with state management, async patterns, and frontend testing basics Comfortable working on both monolithic and service-oriented codebases Awareness of DDD, CQRS concepts (hands-on experience is a plus, not required) Basic familiarity with message-driven or event-driven patterns Docker fundamentals; basic Kubernetes awareness is a plus CI/CD: GitHub Actions, Azure DevOps, or similar Cloud exposure: Azure, AWS, or GCP Basic observability: structured logging, understanding of tracing concepts Salary ranges B2B 110 - 136 PLN/ hour EC 14500 - 17800 PLN/ month

🏢 Summary: B2B contract role for a Full-Stack Software Engineer to develop and maintain backend services in C#/.NET and frontend components in React within a dynamic, international project environment. The position involves building scalable solutions, integrating REST APIs, and supporting implementations with effective problem-solving. Remote work with long-term project engagement. 🗂️ Requirements: Proficiency in C# and .NET for scalable services development, Experience with React.js and React Query, Experience with Azure SQL and MS SQL, Experience building RESTful APIs with ASP.NET Core (OpenAPI), Knowledge of CI/CD processes and Agile methodologies, Experience with Azure DevOps or GitHub, English at minimum B2 level 📃 Skills: C#, .NET, React, ReactQuery, AzureSQL, MSSQL, REST, ASP.NET, OpenAPI, CI/CD, AzureDevOps, GitHub, Azure 🏢 Description: We are currently looking for a Full-Stack Software Engineer for our client, a world-leading provider of digital solutions and applications, with a particular focus on the energy, maritime, and healthcare markets. If working in a dynamic environment is something you’re comfortable with and you use the tech stack listed below on a daily basis, this opportunity is for you! Key responsibilities Developing advanced backend solutions in C# Creating and maintaining frontend components Preparing technical documentation Supporting implementations through quick and effective problem-solving Balancing changing priorities with ongoing development work Ideal candidate profile Proficient in .NET for building scalable services React.js, React Query Azure SQL, MS SQL RESTful APIs with ASP.NET Core (OpenAPI Standard) Knowledge of Agile methodologies and CI/CD processes (Azure DevOps, GitHub) English on B2 level nice to have: Experience with Azure (App Services, Azure Functions, Key Vault, Storage Accounts, Entra ID) Experience using AI-based development tools (Microsoft Copilot, GitHub Copilot) Conditions Employment Type: B2B contract Salary: Depends on your experience Work Model : Remote work model (possible 2–4 business trips per year to the office in Poland or Norway) Benefits : private medical care, sport card, life insurance Project duration: Project start March/April, with a duration of at least until the end of the year Recruitment steps Phone call with Recruiter Client interview Feedback and decision

🏢 Summary: Senior Fullstack Engineer role focused on designing, developing, and maintaining scalable web applications using modern technologies in a hybrid work model within the EU. The position involves full-stack development, performance optimization, security, and collaboration in Agile environments. The engineer supports deployment processes and drives innovation across frontend and backend systems. 🗂️ Requirements: 5+ years of full-stack web development experience, Proficiency in JavaScript and TypeScript, Experience with React or Angular, Strong knowledge of Node.js, Python, or Java, Experience with RESTful APIs, Experience with SQL and NoSQL databases, Experience with cloud services, Understanding of SDLC and Agile methodologies, Good command of English, Legal right to work in the European Union 📃 Skills: JavaScript, TypeScript, React, Angular, Node.js, Python, Java, REST, SQL, NoSQL, Cloud, Agile, CI/CD, DevOps 🏢 Description: Empower digital experiences — craft innovative solutions in web development! Hybrid work model in Europe, with up to three remote days per week. As a Senior Fullstack Engineer – Web Applications , you will be working for our client, a leader in delivering cutting-edge web solutions that transform user engagement and business performance. You will play a pivotal role in designing, developing, and maintaining scalable web applications that drive innovation and efficiency for global clients. Your main responsibilities: Develop and maintain full-stack web applications using modern technologies and best practices. Collaborate with cross-functional teams to define technical solutions and ensure high-quality deliverables. Implement new features, optimize performance, and troubleshoot issues across frontend and backend components. Participate in code reviews and contribute to continuous improvement of development processes. Ensure application security and data integrity in line with industry standards. Stay current with emerging web technologies and recommend innovative approaches. Support deployment and integration processes, ensuring seamless user experiences. You're ideal for this role if you have: 3+ years of experience in full-stack development, particularly in building web applications. Proficiency in JavaScript, TypeScript, and frameworks like React or Angular. Strong knowledge of backend technologies such as Node.js, Python, or Java. Experience with RESTful APIs, databases (SQL and NoSQL), and cloud services. Good understanding of software development lifecycle and Agile methodologies. Ability to work independently and collaboratively in a hybrid environment. It is a strong plus if you have: (optional) Certification in relevant technologies or methodologies. Experience with CI/CD pipelines and DevOps practices. Language Required for the role: Good command of English. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.