Senior Fullstack Engineer (Node/React)

🏢 Summary: Oferta dla Senior Fullstack Developera do pracy nad rozwiązaniami dla zagranicznego klienta, z wykorzystaniem React, Node.js i AWS. Rola obejmuje tworzenie, testowanie i optymalizację oprogramowania oraz dbanie o jakość i bezpieczeństwo kodu w ścisłej współpracy z zespołem klienta. 🗂️ Requirements: Minimum 5 lat doświadczenia w JavaScript/TypeScript, Bardzo dobra znajomość React, Bardzo dobra znajomość Node.js, Doświadczenie z AWS, Umiejętność pisania testów jednostkowych, Znajomość SOLID, DRY i TDD, Język angielski na poziomie minimum B2 📃 Skills: JavaScript, TypeScript, React, Node.js, Nest.js, AWS, HTML, CSS, TDD, SOLID, DRY 🏢 Description: Do jednego z projektów dla naszego klienta z rynku zagranicznego szukamy osoby na stanowisko Senior Fullstack Developera ze znajomością Node.js oraz React. Szukamy Ciebie, jeśli: posiadasz min. 5 lat doświadczenia w programowaniu w JavaScript/TypeScript, bardzo dobrze znasz biblioteki React oraz Node.js masz doświadczenie z Amazon Web Services (AWS) umiesz pisać testy jednostkowe, znasz dobre praktyki np.: SOLID, DRY, TDD, posługujesz się językiem angielskim na poziomie min. średniozaawansowanym (min. B2) , jesteś osobą otwartą, komunikatywną i samodzielną w realizacji zadań, masz proaktywną postawę i nie boisz się wyzwań w projekcie. Na tym stanowisku będziesz: współpracować z zespołem klienta, uczestniczyć w tworzeniu rozwiązań, omawianiu problemów programistycznych, tworzyć oprogramowanie, testować i opiniować rozwiązania dla klienta, pracować z takimi technologiami jak: React, Node.js, Nest.js Javascript, Typescript, AWS, HTML/CSS/JS pracować nad usprawnieniem i optymalizacją procesów i dostarczanych rozwiązań, dbać o jakość i bezpieczeństwo kodu.

🏢 Summary: Full-time, fixed-term B2B contract for a Mid Fullstack Engineer to build and maintain a complex project and resource management web platform. The role covers scalable TypeScript development across React/Next.js frontend and Node.js/Express/PostgreSQL backend, including business workflows, permissions, dashboards, and data aggregation. Offers 100% remote work, flexible hours, and 85–120 PLN/h net + VAT. 🗂️ Requirements: 3+ years of commercial Fullstack Engineer experience, Commercial TypeScript experience across frontend and backend, React experience, Node.js and Express backend experience, PostgreSQL and relational database design experience, Modern web application experience with complex business logic, REST APIs, application architecture, and state management knowledge, Use of AI-powered coding assistants in daily workflow, Independent and cross-functional teamwork, Problem-solving and code-quality focus, Polish C1, English B2 📃 Skills: TypeScript, React, Next.js, Node.js, Express, PostgreSQL, REST, GitHub, Copilot, Cursor, ChatGPT, Claude 🏢 Description: The role We're looking for a Mid Fullstack Engineer with commercial experience building modern web applications using TypeScript and React . You'll join a product team developing a complex web platform that supports project and resource management, capacity planning, reporting, and collaboration across multiple user roles. The platform includes sophisticated business processes, role-based permissions, interconnected modules, and dashboards powered by aggregated data. You'll contribute to both frontend and backend development, building scalable features while collaborating closely with product managers, designers, and other engineers. This is a full-time (1 FTE), fixed-term contract from August/September 2026 until January/February 2026, dedicated to this product development project. What you'll do Develop and maintain full-stack features using TypeScript across both frontend and backend. Build user interfaces with React/Next.js and implement backend services using Node.js, Express, and PostgreSQL. Design and implement business logic related to project planning, resource management, capacity planning, and workflow automation. Develop and evolve data models, authorization mechanisms, and data aggregation logic. Build rich operational interfaces, including dashboards, tables, forms, filters, and user workflows tailored to different user roles. Collaborate with project managers, designers, and engineers to translate business requirements into scalable, high-quality solutions. Write clean, maintainable, and well-tested code while participating in code reviews. Contribute to architectural discussions and continuously improve the quality, performance, and maintainability of the platform. What we're looking for 3+ years of commercial experience as a Fullstack Engineer. Strong commercial experience with TypeScript across both frontend and backend development. Hands-on experience with React (Next.js is a plus). Commercial experience building backend applications with Node.js and Express. Experience working with PostgreSQL and relational database design. Comfortable using AI-powered coding assistants (e.g. GitHub Copilot, Cursor, ChatGPT, Claude) as part of the daily development workflow. Experience building and maintaining modern web applications with complex business logic. Good understanding of REST APIs, application architecture, and state management. Ability to work independently while collaborating effectively within a cross-functional team. Strong problem-solving skills and attention to code quality. Comfortable working in a bilingual environment (Polish C1, English B2). Nice to have Experience with Python and FastAPI. Experience designing permission models or role-based access control. Familiarity with automated testing and CI/CD pipelines. Experience working on SaaS or B2B products. What we offer 85-120 PLN/h netto + VAT, B2B 100% remote setup and flexible hours Interesting, meaningful projects – we only take on the ones we truly believe in :-)

🏢 Summary: Full-time Senior Fullstack Software Engineer role focused on building scalable, cloud-native enterprise platform services with .NET and Angular or React. The position covers end-to-end feature delivery, microservices, architecture, CI/CD, production support, and mentoring in a hybrid Gdańsk-based setup. 🗂️ Requirements: 5+ years of commercial software development experience, Strong C# and .NET Core experience, ASP.NET, REST API, and microservices experience, Hands-on Angular or React experience, AWS, Docker, Kubernetes, SQL, Entity Framework, Git, and Azure DevOps knowledge, Automated testing and CI/CD pipeline experience, Modern software architecture and cloud-native development knowledge, English proficiency at B2+ level 📃 Skills: C#, .NET, ASP.NET, REST, Microservices, Angular, React, AWS, Docker, Kubernetes, SQL, EntityFramework, Git, AzureDevOps, CI/CD 🏢 Description: Senior Fullstack Software Engineer (.NET + Angular/React) Join a team building scalable, cloud-native platform services that power enterprise applications used by customers worldwide. We are looking for an experienced Fullstack Engineer with strong .NET expertise and solid frontend experience in Angular or React. Location: Gdańsk (Hybrid) Employment: Full-time, Employment Contract (UoP) Responsibilities Design and develop modern web applications using .NET and Angular or React . Build and enhance cloud-native, microservices-based solutions. Own features end-to-end, from technical design through development, testing, deployment, and support. Collaborate with cross-functional teams to deliver secure, scalable, and high-quality software. Contribute to architecture, CI/CD, automated testing, and engineering best practices. Support production environments and mentor other engineers. Requirements 5+ years of commercial software development experience. Strong experience with C#, .NET Core, ASP.NET, REST APIs , and microservices. Hands-on experience with Angular or React . Knowledge of AWS, Docker, Kubernetes, SQL, Entity Framework , Git, and Azure DevOps. Experience with automated testing and CI/CD pipelines. Good understanding of modern software architecture and cloud-native development. English level B2+ . What We Offer Employment contract (UoP). Hybrid work model from our Gdańsk office. Opportunity to work on a modern cloud platform using the latest technologies. International environment with experienced engineers and opportunities for professional growth.

🏢 Summary: Long-term, fully remote Senior Fullstack Engineer role building a cloud-native IoT platform for building automation and energy management. The work spans React.js applications, JVM microservices, REST APIs, cloud architecture, automated quality practices, and AI-assisted development. 🗂️ Requirements: 5+ years of commercial full-stack experience, Strong product mindset and ownership of delivered features, Java or Kotlin expertise, Spring Boot and JVM ecosystem knowledge, Microservices architecture and REST API design experience, React.js and modern JavaScript/TypeScript experience, Cloud-native architecture knowledge, Docker containerization experience, Practical Kubernetes knowledge, Daily use of AI-assisted development tools with critical code review skills, Fluent English at C1 level 📃 Skills: Java, Kotlin, Spring, React, JavaScript, TypeScript, Docker, Kubernetes, Copilot, ChatGPT 🏢 Description: About the Project We are seeking an experienced Senior Fullstack Engineer on behalf of our client—a European leader in building automation, energy management, and BMS/EMS/IoT solutions. The project focuses on building and evolving a modern, scalable, next-generation cloud-native platform (Cloud-native / IoT), bringing together a high-performance microservices backend and modern user-facing applications. Work Mode: 100% Remote Start Date: ASAP Duration: long-term Job responsibilities: Building and scaling complete solutions from React.js frontends to robust JVM-based microservices on the backend. Participating in technical discussions, designing REST APIs, and contributing to overall platform modernisations and cloud architecture. Collaborating directly with Product Owners to understand business goals, challenge assumptions constructively, and suggest improvements. Writing clean code, implementing automated testing, conducting code reviews, and maintaining comprehensive technical documentation. Regularly leveraging AI tools (e.g., GitHub Copilot) in daily workflows to boost development speed, generate documentation, and improve productivity. Expectations: 5+ years of commercial Full-stack experience with a strong Product Mindset and proven ownership of delivered features. Strong knowledge of Java and/or Kotlin (JVM ecosystem, Spring Boot), microservices architecture, and REST API design. Hands-on experience with React.js and the modern JavaScript/TypeScript ecosystem. Solid understanding of Cloud-native architectures, containerization (Docker), and practical knowledge of Kubernetes (K8s). Daily active use of AI-assisted tools (Copilot, ChatGPT, etc.) paired with critical code review skills. Fluent English (C1 level) for seamless collaboration in an international environment. (Nice to Have): Experience with SaaS platforms or event-driven architecture, prior domain exposure to IoT, BMS, HVAC, SCADA, or industrial automation, and working knowledge of German. We offer Ongoing support from a dedicated agent , taking care of your project continuity, client contact, necessary formalities, work comfort and development Consultant Development Program – advice on growth planning based on the latest trends and market needs in IT, including consultations with agents and growth mentors Access to 7N Learning & Development – a development and educational platform with webinars, a library of articles and industry reports, and regular invitations to one-time and recurring development events – technical, business, and lifestyle Spectacular integration events , both for you (e.g., annual Kick-Off trip , Christmas parties, or Summer Olympics sports events) and for your loved ones (e.g., family picnics, movie premieres) Professional development not only during the project – you can get involved in knowledge transfer to others within the 7N Services offering directed at 7N clients Relationships and access to the knowledge of the most experienced IT experts in the market – the average professional tenure of our consultants in Poland is over 10 years A complete benefits package , including funding for medical care, life insurance, sports cards for you and your loved ones, as well as discounts in stores in Poland and abroad About 7N Constantly searching for projects, difficult rate negotiations, lack of development support – sounds familiar? At 7N, you gain not only stability of contracts but also the personal involvement of a dedicated agent who ensures your professional comfort and continuous access to development initiatives. Our mission is to provide stable and rewarding collaborations that drive your success as an IT expert and the success of our clients. We build long-lasting relationships based on Scandinavian values and 30 years of experience creating IT solutions for over 200 organizations.