Senior Fullstack Engineer – Web Applications

🏢 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.

🏢 Summary: Senior Full Stack Engineer role focused on building scalable web applications, solving complex technical challenges, and contributing to architecture decisions in a modern product environment. The position involves full-stack development across frontend, backend, and cloud systems using modern technologies. The offer includes remote work, flexible hours, modern equipment, and growth opportunities in a collaborative team. 🗂️ Requirements: 5+ years of Full Stack Software Engineering experience, Strong algorithmic thinking, Knowledge of data structures, Understanding of software design principles, Performance optimization skills, Experience with TypeScript, Experience with React, Experience with Node.js, Experience with SQL databases, Experience across frontend, backend, and cloud environments, Ability to learn new technologies quickly, Fluent English, Strong communication skills 📃 Skills: TypeScript, React, Node.js, SQL, JavaScript, Cloud 🏢 Description: Senior Full Stack Engineer We are looking for a Senior Full Stack Engineer with strong software engineering fundamentals and excellent algorithmic and problem-solving skills . You'll play a key role in designing scalable applications, solving complex technical challenges and driving architectural decisions in a modern product environment. Responsibilities Design, develop and maintain high-performance web applications. Translate complex business requirements into efficient technical solutions. Build scalable frontend and backend services using modern technologies. Contribute to system architecture, code quality and technical improvements. Collaborate with cross-functional teams and take ownership of features from design to deployment. Requirements 5+ years of experience in Full Stack Software Engineering. Strong algorithmic thinking and solid understanding of data structures, software design principles and performance optimization. Experience with TypeScript, React, Node.js and SQL databases. Ability to quickly learn new technologies and solve complex technical problems. Experience working across frontend, backend and cloud environments. Excellent communication skills and fluent English. What We Offer Remote work model with flexible working hours. Opportunity to work with modern technologies and influence technical decisions. High-quality equipment provided. Fast-paced environment with multiple innovative projects and excellent growth opportunities. Collaborative team where ownership, initiative and continuous learning are highly valued.

🏢 Summary: Senior Fullstack Engineer role focused on building scalable enterprise applications using .NET and React in a hybrid Krakow-based environment. The position involves full software lifecycle ownership, UI improvements, DevOps automation, architecture contributions, and customer-facing solution delivery. 🗂️ Requirements: 7+ years of experience in .NET application development, Experience with React frontend development, Proficiency in C#, Experience with Web API development, Advanced SQL Server and T-SQL skills, Understanding of SDLC processes, Experience with DevOps practices, Fluent English, Legal right to work in the European Union 📃 Skills: .NET, React, C#, WebAPI, SQL, SQLServer, TSQL, DevOps, SDLC, Docker, Kubernetes 🏢 Description: Unleash innovation — shape the future of enterprise applications. Krakow-based opportunity with hybrid work model. As a Senior Fullstack Engineer – .NET and React Development , you will be working for our client, a leader in enterprise software solutions, dedicated to delivering robust, scalable, and innovative digital tools. Your expertise will drive the development of cutting-edge applications that empower businesses worldwide, supporting their digital transformation journeys. Your main responsibilities: Implement solutions following best Design Patterns to ensure maintainability and scalability Analyze requirements to fully understand solutions and recommend improvements for optimal performance Lead UI enhancements and improvements to boost user experience and application stability Actively participate in DevOps automation and improve the CI/CD lifecycle processes Manage changes through the entire service management lifecycle, ensuring seamless updates Contribute to software architecture design and technical decision-making Develop and prototype applications to validate concepts and designs Provide exceptional customer support by addressing and resolving issues promptly Communicate effectively with clients to understand needs and deliver tailored solutions You're ideal for this role if you have: A minimum of 7 years of professional experience in production application development within .NET ecosystems, including front-end (preferably React) and DevOps practices Proficiency in C# and Web API development, with a focus on scalable, secure backend services Strong hands-on experience with React, building dynamic, responsive web applications Advanced SQL skills, particularly with SQL Server, including T-SQL scripting, query optimization, and performance tuning Solid understanding of the SDLC, from requirement gathering to deployment and maintenance Exceptional problem-solving abilities and an eye for detail to ensure high-quality deliverables It is a strong plus if you have: (optional) Certifications in cloud or DevOps tools Experience with containerization (e.g., Docker, Kubernetes) Language Required for the role: Fluent English (written and spoken) 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.

🏢 Summary: Senior Fullstack Engineer role focused on developing scalable enterprise applications using .NET and React in a hybrid Krakow-based environment. The position involves full lifecycle development, UI enhancements, DevOps automation, architecture contributions, and customer-focused solution delivery. 🗂️ Requirements: 7+ years of experience in .NET application development, Experience with React frontend development, Proficiency in C#, Experience with Web API development, Advanced SQL Server and T-SQL skills, Understanding of SDLC processes, Experience with DevOps practices, Fluent English, Legal right to work in the European Union 📃 Skills: .NET, React, C#, WebAPI, SQL, SQLServer, T-SQL, DevOps, CI/CD, Docker, Kubernetes 🏢 Description: Unleash innovation — shape the future of enterprise applications. Krakow-based opportunity with hybrid work model. As a Senior Fullstack Engineer – .NET and React Development , you will be working for our client, a leader in enterprise software solutions, dedicated to delivering robust, scalable, and innovative digital tools. Your expertise will drive the development of cutting-edge applications that empower businesses worldwide, supporting their digital transformation journeys. Your main responsibilities: Implement solutions following best Design Patterns to ensure maintainability and scalability Analyze requirements to fully understand solutions and recommend improvements for optimal performance Lead UI enhancements and improvements to boost user experience and application stability Actively participate in DevOps automation and improve the CI/CD lifecycle processes Manage changes through the entire service management lifecycle, ensuring seamless updates Contribute to software architecture design and technical decision-making Develop and prototype applications to validate concepts and designs Provide exceptional customer support by addressing and resolving issues promptly Communicate effectively with clients to understand needs and deliver tailored solutions You're ideal for this role if you have: A minimum of 7 years of professional experience in production application development within .NET ecosystems, including front-end (preferably React) and DevOps practices Proficiency in C# and Web API development, with a focus on scalable, secure backend services Strong hands-on experience with React, building dynamic, responsive web applications Advanced SQL skills, particularly with SQL Server, including T-SQL scripting, query optimization, and performance tuning Solid understanding of the SDLC, from requirement gathering to deployment and maintenance Exceptional problem-solving abilities and an eye for detail to ensure high-quality deliverables It is a strong plus if you have: (optional) Certifications in cloud or DevOps tools Experience with containerization (e.g., Docker, Kubernetes) Language Required for the role: Fluent English (written and spoken) 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.

🏢 Summary: Senior Fullstack Engineer role focused on building and enhancing scalable enterprise applications using .NET and React within a hybrid Krakow-based setup. The position involves leading UI improvements, contributing to architecture and DevOps automation, and delivering high-quality, secure backend and frontend solutions. The engineer drives full SDLC activities, from design and development to deployment and support. 🗂️ Requirements: Minimum 7 years of professional experience in .NET production application development, Strong experience with React for frontend development, Proficiency in C# and Web API development, Advanced SQL Server skills including T-SQL and query optimization, Experience with DevOps practices and CI/CD processes, Solid understanding of SDLC, Fluent English, Legal right to work in the European Union 📃 Skills: .NET, C#, WebAPI, React, SQL, SQLServer, T-SQL, CI/CD, DevOps, Docker, Kubernetes 🏢 Description: Unleash innovation — shape the future of enterprise applications. Krakow-based opportunity with hybrid work model. As a Senior Fullstack Engineer – .NET and React Development , you will be working for our client, a leader in enterprise software solutions, dedicated to delivering robust, scalable, and innovative digital tools. Your expertise will drive the development of cutting-edge applications that empower businesses worldwide, supporting their digital transformation journeys. Your main responsibilities: Implement solutions following best Design Patterns to ensure maintainability and scalability Analyze requirements to fully understand solutions and recommend improvements for optimal performance Lead UI enhancements and improvements to boost user experience and application stability Actively participate in DevOps automation and improve the CI/CD lifecycle processes Manage changes through the entire service management lifecycle, ensuring seamless updates Contribute to software architecture design and technical decision-making Develop and prototype applications to validate concepts and designs Provide exceptional customer support by addressing and resolving issues promptly Communicate effectively with clients to understand needs and deliver tailored solutions You're ideal for this role if you have: A minimum of 7 years of professional experience in production application development within .NET ecosystems, including front-end (preferably React) and DevOps practices Proficiency in C# and Web API development, with a focus on scalable, secure backend services Strong hands-on experience with React, building dynamic, responsive web applications Advanced SQL skills, particularly with SQL Server, including T-SQL scripting, query optimization, and performance tuning Solid understanding of the SDLC, from requirement gathering to deployment and maintenance Exceptional problem-solving abilities and an eye for detail to ensure high-quality deliverables It is a strong plus if you have: (optional) Certifications in cloud or DevOps tools Experience with containerization (e.g., Docker, Kubernetes) Language Required for the role: Fluent English (written and spoken) 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.

🏢 Summary: Senior Fullstack Engineer role focused on building and enhancing scalable enterprise applications using .NET and React in a hybrid Krakow-based setup. The position involves leading UI improvements, contributing to architecture and DevOps automation, and delivering high-quality backend and frontend solutions. You will drive end-to-end development from design to deployment while ensuring performance, stability, and maintainability. 🗂️ Requirements: Minimum 7 years experience in .NET application development, Strong experience with React for frontend development, Proficiency in C# and Web API, Advanced SQL Server and T-SQL skills, Experience with CI/CD and DevOps practices, Understanding of SDLC, Experience with design patterns and software architecture, Fluent English, Legal right to work in EU 📃 Skills: .NET, C#, React, WebAPI, SQL, SQLServer, T-SQL, CI/CD, DevOps, SDLC, Docker, Kubernetes 🏢 Description: Unleash innovation — shape the future of enterprise applications. Krakow-based opportunity with hybrid work model. As a Senior Fullstack Engineer – .NET and React Development , you will be working for our client, a leader in enterprise software solutions, dedicated to delivering robust, scalable, and innovative digital tools. Your expertise will drive the development of cutting-edge applications that empower businesses worldwide, supporting their digital transformation journeys. Your main responsibilities: Implement solutions following best Design Patterns to ensure maintainability and scalability Analyze requirements to fully understand solutions and recommend improvements for optimal performance Lead UI enhancements and improvements to boost user experience and application stability Actively participate in DevOps automation and improve the CI/CD lifecycle processes Manage changes through the entire service management lifecycle, ensuring seamless updates Contribute to software architecture design and technical decision-making Develop and prototype applications to validate concepts and designs Provide exceptional customer support by addressing and resolving issues promptly Communicate effectively with clients to understand needs and deliver tailored solutions You're ideal for this role if you have: A minimum of 7 years of professional experience in production application development within .NET ecosystems, including front-end (preferably React) and DevOps practices Proficiency in C# and Web API development, with a focus on scalable, secure backend services Strong hands-on experience with React, building dynamic, responsive web applications Advanced SQL skills, particularly with SQL Server, including T-SQL scripting, query optimization, and performance tuning Solid understanding of the SDLC, from requirement gathering to deployment and maintenance Exceptional problem-solving abilities and an eye for detail to ensure high-quality deliverables It is a strong plus if you have: (optional) Certifications in cloud or DevOps tools Experience with containerization (e.g., Docker, Kubernetes) Language Required for the role: Fluent English (written and spoken) 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.

🏢 Summary: Senior Fullstack Engineer role focused on .NET and React development for enterprise-grade applications, driving scalable backend services and modern UI solutions. The position involves leading architectural decisions, enhancing CI/CD processes, and improving application performance and user experience. Candidates will contribute across the full SDLC while supporting digital transformation initiatives. 🗂️ Requirements: Minimum 7 years of professional experience in .NET production development, Strong experience with C# and Web API, Hands-on experience with React, Advanced SQL skills with SQL Server and T-SQL, Experience with DevOps practices and CI/CD processes, Solid understanding of SDLC, Fluent English (written and spoken), Legal right to work in the European Union 📃 Skills: .NET, C#, WebAPI, React, SQL, SQLServer, T-SQL, DevOps, CI/CD, Docker, Kubernetes 🏢 Description: Unleash innovation — shape the future of enterprise applications. Krakow-based opportunity with hybrid work model. As a Senior Fullstack Engineer – .NET and React Development , you will be working for our client, a leader in enterprise software solutions, dedicated to delivering robust, scalable, and innovative digital tools. Your expertise will drive the development of cutting-edge applications that empower businesses worldwide, supporting their digital transformation journeys. Your main responsibilities: Implement solutions following best Design Patterns to ensure maintainability and scalability Analyze requirements to fully understand solutions and recommend improvements for optimal performance Lead UI enhancements and improvements to boost user experience and application stability Actively participate in DevOps automation and improve the CI/CD lifecycle processes Manage changes through the entire service management lifecycle, ensuring seamless updates Contribute to software architecture design and technical decision-making Develop and prototype applications to validate concepts and designs Provide exceptional customer support by addressing and resolving issues promptly Communicate effectively with clients to understand needs and deliver tailored solutions You're ideal for this role if you have: A minimum of 7 years of professional experience in production application development within .NET ecosystems, including front-end (preferably React) and DevOps practices Proficiency in C# and Web API development, with a focus on scalable, secure backend services Strong hands-on experience with React, building dynamic, responsive web applications Advanced SQL skills, particularly with SQL Server, including T-SQL scripting, query optimization, and performance tuning Solid understanding of the SDLC, from requirement gathering to deployment and maintenance Exceptional problem-solving abilities and an eye for detail to ensure high-quality deliverables It is a strong plus if you have: (optional) Certifications in cloud or DevOps tools Experience with containerization (e.g., Docker, Kubernetes) Language Required for the role: Fluent English (written and spoken) 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.

🏢 Summary: Senior Fullstack Engineer role focused on building modern, scalable web applications using React and Node.js, with strong emphasis on frontend development. The position covers the full application stack, including backend services, API design, and data management. You will collaborate with cross-functional teams to deliver high-quality, accessible, and high-performance digital products. 🗂️ Requirements: Strong commercial experience with React, Strong commercial experience with Node.js, Experience with React Router, Experience with TanStack Query, Experience integrating Headless CMS (preferably Contentful), Understanding of API design principles, Experience with PostgreSQL, Experience with Redis, Experience with Vitest, Experience with Playwright, Knowledge of WCAG accessibility standards, Experience with performance optimisation, Ability to work across full software development lifecycle 📃 Skills: React, Node.js, TypeScript, Fastify, PostgreSQL, Redis, React Router, TanStack Query, Contentful, Vitest, Playwright, WCAG, SAP Gigya, Salesforce 🏢 Description: Senior Fullstack Engineer (React & Node.js) About the Role We are looking for a Senior Fullstack Engineer to join a product team building modern, scalable web applications and digital experiences. You will work across the entire application stack, from user-facing interfaces to backend services and integrations. The role has a strong focus on frontend engineering while also involving backend development, API design, and data management. You will collaborate closely with product, design, and engineering teams to deliver high-quality, accessible, and performant applications. Responsibilities Develop and maintain modern web applications using React, Node.js, and TypeScript. Build scalable and reusable UI components integrated with a design system. Develop and maintain backend services and APIs using Node.js and Fastify. Integrate applications with CMS platforms and third-party services. Work with PostgreSQL and Redis to support application functionality and performance. Write and maintain automated tests, including unit and end-to-end tests. Ensure high standards of accessibility, performance, and code quality. Participate in architectural discussions and contribute to engineering best practices. Requirements Strong commercial experience in fullstack development using React and Node.js. Solid experience with modern frontend technologies, including React Router and TanStack Query. Experience integrating with Headless CMS platforms, preferably Contentful. Good understanding of API design and backend development principles. Experience with PostgreSQL and Redis. Experience with automated testing frameworks such as Vitest and Playwright. Strong understanding of accessibility standards (WCAG) and performance optimisation. Ability to work across the entire software development lifecycle in a product-oriented environment. Nice to Have Experience with authentication and identity platforms such as SAP Gigya. Experience integrating Salesforce products or loyalty platforms. Experience in highly scalable, customer-facing digital products. Experience working in agile, cross-functional product teams.

🏢 Summary: Mid/Senior Fullstack Developer role focused on designing and developing modern web applications across the entire technology stack. The position involves full software lifecycle participation, including architecture design, backend and frontend development, database modeling, API integrations, testing, and CI/CD processes. The developer will build new solutions and enhance existing systems with strong emphasis on quality, performance, and automation. 🗂️ Requirements: Minimum 2 years of web application development experience, Experience delivering at least 3 projects end-to-end, RWD development using Bootstrap 4 and BEM, Very good knowledge of HTML5, CSS3, SASS, SCSS, JavaScript, Experience with React or Angular or Vue or Redux, Experience with REST API integration, Experience with Python frameworks: Django or Flask or FastAPI, Experience with SQL and NoSQL databases, Experience with Docker or Podman, Experience with CI/CD pipelines, Experience writing tests using unittest or pytest, Experience with Git version control 📃 Skills: HTML5, CSS3, SASS, SCSS, JavaScript, React, Angular, Vue, Redux, Python, Django, Flask, FastAPI, SQL, NoSQL, REST, Docker, Podman, CI/CD, unittest, pytest, Git, Bootstrap, BEM, RWD 🏢 Description: Szukasz projektu, w którym będziesz mieć realny wpływ na rozwój nowoczesnych aplikacji webowych, uczestniczyć w projektowaniu architektury oraz pracować nad rozwiązaniami obejmującymi cały stack technologiczny? Dla naszego klienta poszukujemy Mid/Senior Fullstack Developera, który wesprze zespół w tworzeniu nowych aplikacji webowych oraz rozwoju istniejących rozwiązań. Osoba na tym stanowisku będzie uczestniczyć w pełnym cyklu wytwarzania oprogramowania – od analizy wymagań biznesowych, przez projektowanie i implementację, aż po wdrożenie i utrzymanie systemów. Twój zakres obowiązków: Projektowanie i rozwój aplikacji webowych: Tworzenie oraz rozwijanie nowoczesnych aplikacji webowych w oparciu o technologie frontendowe i backendowe, z uwzględnieniem wymagań biznesowych, wydajnościowych oraz jakościowych. Współpraca przy analizie i planowaniu rozwiązań: Ścisła współpraca z Product Ownerem, analitykami oraz interesariuszami biznesowymi w zakresie zbierania wymagań, planowania prac, estymacji zadań i proponowania optymalnych rozwiązań technologicznych. Implementacja nowych funkcjonalności: Projektowanie i rozwój nowych modułów systemowych, integracji oraz funkcjonalności wspierających realizację celów biznesowych organizacji. Projektowanie i rozwój warstwy danych: Tworzenie, rozwój i optymalizacja struktur baz danych SQL i NoSQL, modelowanie danych oraz zapewnienie wydajnej komunikacji pomiędzy aplikacją a warstwą bazodanową. Integracja systemów i rozwój API: Implementacja oraz rozwój usług opartych o REST API, integracja z systemami zewnętrznymi oraz zapewnienie niezawodnej wymiany danych pomiędzy komponentami rozwiązania. Dbałość o jakość i automatyzację procesów: Tworzenie testów jednostkowych i automatycznych, udział w procesach CI/CD, wykorzystanie konteneryzacji oraz wdrażanie dobrych praktyk programistycznych zapewniających wysoką jakość kodu. Współpraca zespołowa i rozwój architektury: Aktywny udział w pracach zespołu projektowego, code review, dzieleniu się wiedzą oraz współtworzeniu architektury rozwijanych rozwiązań. Dokumentacja techniczna: Przygotowywanie i aktualizacja dokumentacji technicznej, projektowej oraz powykonawczej, wspierającej utrzymanie i dalszy rozwój aplikacji. Nasze wymagania: Minimum 2 lata doświadczenia w tworzeniu aplikacji webowej Przynajmniej 3 projekty realizowanych w zespole kilku osobowym lub samodzielnie - w pełnym cyklu wdrożenia rozwiązania od identyfikacji źródeł danych do uruchomienia aplikacji. Umiejętność wytwarzania stron internetowych w technice RWD (Bootstrap 4) w metodologii BEM Bardzo dobra znajomość HTML5, CSS3, SASS, SCSS oraz JavaScript Doświadczenie w pracy z jednym z Framework’ów: ReactJS , Angular, Vue, Redux Umiejętność pracy z API REST Znajomość technologii Python DJango, Flask, FastAPI Doświadczenie w pracy z bazami danych SQL jak i NoSQL Preferowane środowisko programistyczne: VS Code, PyCharm Znajomość konteneryzacji (Docker/Podman) Doświadczenie z procesami CI/CD Doświadczenie z GIS Umiejętność pisania testów z wykorzystaniem unittest/pytest Praca z wykorzystanym system kontroli wersji GIT Mile widziane: Doświadczenie z K8s Doświadczenie z GitLab Znajomość Jenkins oraz Selenium

🏢 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.