Senior Fullstack 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: The role involves developing and maintaining high-traffic, public-facing web applications as a Middle FullStack Engineer, with a strong focus on integrating AI tools into the software development lifecycle. You will build scalable backend and frontend solutions, apply modern architectural practices, and ensure production readiness through testing and CI/CD. The position emphasizes AI-driven development, cloud infrastructure, and performance-optimized user interfaces. 🗂️ Requirements: 3+ years of experience developing scalable and highly available software systems, Strong knowledge of software architecture and design patterns, Experience with AI tooling (e.g., ChatGPT, Codex) in development workflows, Experience with AI frameworks such as Vercel AI SDK or LangChain, Proficiency in backend development with Typescript, Node.js, or C#, Proficiency in frontend development with HTML, CSS, JavaScript, Experience with component-based frameworks and SSR (Next.js, React, Vue.js), Experience with SQL and NoSQL databases, Experience with cloud infrastructure and containerization tools, Experience with CI/CD pipelines and version control systems, Experience with APIs and service-based architectures, Experience with unit testing (frontend and backend), Upper-intermediate English level 📃 Skills: Typescript, Node.js, C#, HTML, CSS, JavaScript, React, Next.js, Vue.js, GraphQL, Redis, SQL, NoSQL, AWS, Terraform, Docker, Git, CI/CD, Datadog, Newrelic, LangChain, Vercel, ChatGPT, Codex 🏢 Description: (#4650) We are looking for a Middle FullStack Engineer to join our team. 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 Middle 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 Requirements: 3+ 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 (Typescript, Node.js, C#) 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, 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 Working for the North America timezone (ET) is preferable (till 21:00 Kyiv time) 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: 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 Full-Stack Engineer role with a 50/50 backend and frontend focus, building scalable microservices-based applications using ASP.NET (C#) and React with TypeScript in a cloud-native environment. The position involves designing and maintaining REST APIs, developing responsive user interfaces, ensuring high test coverage, and contributing to architectural decisions with strong technical ownership. Poland-based employment (Umowa o Pracę) with remote flexibility and quarterly in-person collaboration. 🗂️ Requirements: MSc+ in Computer Science or equivalent, Minimum 5 years experience with ASP.NET and C#, Minimum 5 years experience building REST APIs, Minimum 5 years experience with React, Experience with TypeScript, Strong knowledge of microservices architecture, Knowledge of cloud design patterns, Experience with unit, integration, and end-to-end testing, High level of technical ownership, Fluent English (minimum B2), Poland residency 📃 Skills: ASP.NET, C#, REST, React, TypeScript, Microservices, AWS, Agile, DDD, UnitTesting, IntegrationTesting, E2ETesting, Cloud 🏢 Description: We’re looking for a Senior Full-Stack Engineer who brings deep technical expertise and a collaborative mindset to our product development team. You will work with a modern microservices architecture, building scalable backend services using the ASP.NET Web API with C#, and intuitive frontend interfaces using mainly React and TypeScript. This is a hands-on engineering role with a 50/50 front-/backend focus, ideal for someone who likes to take ownership, thrives in a dynamic product team, and enjoys mentoring others. This role could easily become a Tech Lead role in a foreseeable future. If you're passionate about designing high-impact software in a cloud-native environment, we’d love to hear from you. This Poland-based role offers remote flexibility, but we value in-person collaboration. Our team meets in Poland for at least one week each quarter, so we request all applicants to be located in Poland. This is not a globally remote role. Poland residency is required. The contract form is Umowa o Pracę (only, no B2B). What you will be responsible for Collaborate proactively in refinement sessions with product and tech teams to ensure clarity and feasibility of features. Design, implement, and maintain scalable web APIs using ASP.NET and microservices architecture principles. Develop responsive user interfaces with React and TypeScript that enhance usability and performance. Work closely with Product Owners to clarify feature requirements and ensure business context is well-understood. Define, design and align feature architecture with the Head of Engineering to ensure consistency and scalability. Ensure features meet Definition of Done, with state-of-the-art unit, integration, and end-to-end test coverage. Support incident response and production issue resolution as per team standards. Actively contribute to team knowledge sharing and coach colleagues in technical best practices. What makes you a match Essential Qualifications: MSc+ in Computer Science or equivalent 5 years of proven experience in building secure REST APIs using ASP.NET , as well as developing solid front-end applications with React are non-negotiable must haves. Comprehensive knowledge of contemporary web application architectures, with a focus on microservices and cloud design patterns. Demonstrated ability of high technical Ownership and Tech Leadership are a requirement for this role. Bonus Skills: Hands-on experience with AWS infrastructure. Experience working in cross-functional product teams using Agile practices and following Domain-Driven Design (DDD). Collaboration and Interpersonal Skills: Clear and adaptive communication with both technical and non-technical stakeholders. Strong sense of ownership, accountability, and proactive problem-solving. Languages: English: B2 - (No certificate required, but Fluency) German, Polish, Ukrainian: desired, not required What you can expect A dynamic, ambitious team where your voice is heard, and your contributions truly matter. You’ll have real ownership over your decisions in a trusted, cross-functional environment within a Swiss product company that puts people first. We offer fair compensation, flexible working hours, a hybrid work setup, and a culture that supports both personal and professional growth, fostering a healthy work-life balance. Employer of Record: For this role, we offer employment through our trusted Employer of Record provider Remote.com , ensuring full legal compliance and a seamless experience for our team members in Poland. ID Verification: To maintain a fair and secure hiring process, candidates may be asked to verify their identity their identity before speaking with our Recruiter. This step helps us prevent fraud and focus our resources on genuine applicants. About us Who we are esurance is a Swiss InsurTech offering a SaaS platform that connects SMEs, insurance providers, brokers, and business application providers. Founded in 2013, we're on a mission to make health insurance for small businesses truly hassle-free. What makes us unique You'll be part of a connected, forward-thinking team built on trust, openness, and mutual respect — working hybrid from Zürich or remotely across Europe. We invest in your growth through agile practices, real ownership, and a transparent Grading System that ensures fair pay and clear career paths. Our core values We are connected. We are ahead. We are clear. We are approachable. Do these resonate with you? → Come join us. Our Recruitment Process & Principles We keep our process transparent and respect your time: Application Review — You hear from us within 5 business days. Always. Recruiter Screen — A relaxed Get2Know call to explore mutual fit. Four Interviews — Two Role Knowledge interviews (peer + supervisor), one Culture Match, one Leadership conversation. Batched into two days wherever possible. Hiring Decision — Thoughtful, timely. You'll know within 1–2 weeks. Use of Artificial Intelligence (AI) We use AI to increase productivity and you're welcome to use it to polish your CV or Coverletter. Interviews and assessments should reflect your genuine self, though. Recruiting Agencies: We don't work with unsolicited agency submissions. Thanks for respecting this.

🏢 Summary: Senior Fullstack Engineer role focused on developing and maintaining scalable web applications in a hybrid work environment across Europe. The position involves full-stack development, cross-functional collaboration, performance optimization, and secure deployment using modern frontend and backend technologies. 🗂️ Requirements: 5+ years of full-stack web development experience, Proficiency in JavaScript, Proficiency in TypeScript, Experience with React or Angular, Knowledge of Node.js, Python, or Java, Experience with RESTful APIs, Experience with SQL and NoSQL databases, Experience with cloud services, Understanding of 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 on 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. 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: - 5+ 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. Strong plus: - Certification in relevant technologies or methodologies. - Experience with CI/CD pipelines and DevOps practices. Language required: - Good command of English. Eligibility: - Only candidates with an existing legal right to work in the European Union will be considered for this role.

🏢 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 and scaling a modern B2B SaaS platform for subscription-based e-commerce. The position involves end-to-end feature delivery, architectural decisions, and improving system scalability and reliability. High-impact role with strong ownership over technical direction and product evolution. 🗂️ Requirements: 7+ years engineering experience in complex systems, Strong system design skills, Experience designing scalable architectures, Full-stack development experience, Experience building SaaS platforms, Experience with e-commerce systems 📃 Skills: JavaScript, TypeScript, SaaS, Architecture, Scalability, Reliability, APIs, Ecommerce, Payments, Cloud 🏢 Description: Senior Full-stack Engineer Our client is building a modern B2B SaaS platform that enables businesses to launch and scale subscription-based models for physical and digital products. The product sits at the intersection of e-commerce, payments, and developer tooling, with a strong focus on extensibility and developer experience. The team is lean, senior, and highly experienced, backed by strong investors and industry advisors. They operate with high autonomy, fast execution, and strong ownership culture. Role We are looking for a Senior Full-stack Engineer to help shape the next evolution of the platform. You will work across architecture, product, and infrastructure, focusing on scalability, reliability, and developer experience. This is a high-impact role where you will influence both technical direction and product decisions. Responsibilities Build and evolve a scalable SaaS platform Design and deliver new features end-to-end Improve performance, reliability, and system architecture Collaborate with product, design, and growth teams Requirements 7+ years of engineering experience in complex systems Strong architectural and system design skills Ability to choose appropriate technologies per problem Experience working in cross-functional teams Strong communication in Polish and English Startup mindset: ownership, speed, adaptability Experience with e-commerce platforms is a plus Offer High-impact role in a senior engineering team with real product ownership and influence. Competitive salary plus ESOP, fully remote work (Poland), regular team offsites, and modern tooling including MacBook Pro and AI credits. Direct access to founders, investors, and advisors.

🏢 Summary: Senior Fullstack Software Engineer role focused on building scalable, cloud-native applications with a strong backend emphasis (70% backend, 30% frontend). The position involves designing distributed, event-driven systems on AWS, developing REST APIs, and contributing across the full stack using Node.js, TypeScript, React, and Next.js. The engineer will drive architectural decisions, scalability, and technical direction while collaborating with cross-functional teams in a US-aligned remote environment. 🗂️ Requirements: Strong experience as Senior Software Engineer in product-focused environments, Advanced backend development with Node.js and TypeScript, Experience building and consuming REST APIs, Frontend development experience with React and TypeScript, Experience with AWS or other cloud platforms, Strong knowledge of distributed and scalable system design, Experience with MySQL and PostgreSQL databases, Experience with event-driven architectures, Experience with queuing or messaging systems, Ability to write clean, maintainable, scalable code, Strong debugging and problem-solving skills, Availability to work overlapping US hours 📃 Skills: Node.js, TypeScript, React, Next.js, AWS, REST, MySQL, PostgreSQL, SQL, APIs, Microservices, Event-driven, Messaging, Queues, Cloud, Distributed-systems 🏢 Description: Fullstack Senior Software Engineer Location: Remote We are looking for a talented Senior Fullstack Software Engineer to join a high-performing product engineering team focused on building scalable, modern cloud-native applications. This role is best suited to an experienced engineer who is stronger on the backend (approximately 70% backend / 30% frontend) and enjoys designing robust distributed systems while still being comfortable contributing across the full stack. You will play a key role in shaping technical direction, building scalable event-driven platforms, and contributing to product thinking - not just delivering code. We are looking for someone with strong ownership, accountability, and the ability to think about the wider business and customer impact of the solutions they build. This position requires alignment with US-based teams, and so the working hours must overlap. What You'll Be Doing Designing, building, and maintaining scalable backend services using Node.js and TypeScript Developing and supporting modern frontend applications using React and Next.js Building robust RESTful APIs and backend integrations Contributing to distributed, cloud-native systems running on AWS Designing and implementing event-driven architectures and queue-based systems Working with SQL databases including MySQL and PostgreSQL Driving engineering best practices, scalability, reliability, and performance improvements Collaborating closely with Product, Engineering, and stakeholders to shape technical solutions Taking ownership of features and systems throughout the full software lifecycle Mentoring engineers and contributing to technical discussions and architectural decisions Required Skills & Experience Strong experience as a Software Engineer / Senior Software Engineer in modern product-focused environments Excellent backend development experience with: Node.js TypeScript REST APIs React TypeScript Experience building applications in AWS cloud environments (or other cloud platforms) Strong understanding of scalable and distributed system design MySQL PostgreSQL Proven experience building event-driven architectures and working with queuing/messaging systems (highly important) Ability to write clean, maintainable, and scalable code Strong problem-solving and debugging skills What We're Looking For Strong product mindset - someone who thinks beyond just delivering tickets and understands the "why" behind engineering decisions Ownership and accountability for technical delivery and outcomes Ability to contribute to architectural direction and scalability initiatives Comfortable working in fast-paced, collaborative engineering environments Passion for building high-quality, scalable software products Strong communication and stakeholder collaboration skills

🏢 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: Senior Full Stack Developer role focused on supporting, maintaining, and enhancing a live, client-specific software product in a fully remote EU-based setup. The position involves working across backend and frontend layers to improve stability, scalability, usability, and performance. You will troubleshoot issues, implement new features, and ensure continuous product evolution in a mission-critical environment. 🗂️ Requirements: 6+ years Full Stack development experience, Strong backend experience with Python, Strong frontend experience with React, Experience maintaining and improving existing software products, Understanding of databases and cloud environments (preferably Azure), Knowledge of full software development lifecycle, Ability to debug and resolve production issues, Experience working across frontend and backend layers, Fluent English, Legal right to work in the EU 📃 Skills: Python, React, Azure, SQL, Databases, Cloud, Git, REST, JavaScript, HTML, CSS 🏢 Description: Unleash your full potential — elevate a live product by supporting, refining, and evolving real-world solutions! EU-based opportunity with a fully remote work model (5 days/week). As a Senior Full Stack Developer , you will be working for our client, a leading software environment where your expertise directly impacts a live, client-specific solution. You’ll support, enhance, and maintain an established product, ensuring it remains robust, user-friendly, and scalable as new users and needs emerge. This role offers a unique chance to contribute to a mission-critical platform while advancing your career in a dynamic, innovative environment. Your main responsibilities: Support ongoing development and maintenance of an existing software product. Troubleshoot and resolve bugs reported during onboarding and daily usage. Implement UI/UX improvements and new features based on user feedback. Work across backend and frontend layers to ensure seamless functionality. Collaborate with stakeholders to understand issues, prioritize improvements, and deliver practical solutions. Help onboard new users by maintaining platform stability and efficiency. Contribute to continuous code quality, usability, and performance enhancements. You're ideal for this role if you have: 6+ years of experience as a Full Stack Developer / Engineer. Hands-on experience with Python on the backend. Strong experience with React on the frontend. Basic to solid understanding of databases and cloud environments, preferably Azure. Knowledge of the software development lifecycle from both frontend and backend perspectives. Experience maintaining and improving existing products rather than only building from scratch. Ability to identify issues, debug effectively, and deliver clean, practical fixes. Strong problem-solving skills with a product-minded approach. Sensitivity to UI/UX and user needs. It is a strong plus if you have: (optional) Experience working on client-facing internal tools or single-client environments. Enthusiasm for AI and understanding of how it works. Exposure to product support, user onboarding, or post-launch optimization. Familiarity with feature request handling and iterative product improvements. Knowledge of cloud-based architecture in Azure. Language required for this role: Fluent 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.