Senior Fullstack Developer (Node.js/React) Backend Focus

🏢 Summary: Senior Full Stack Developer role focused on building high-performance, data-driven web applications with a strong emphasis on React and complex graph visualizations. The position involves developing scalable Node.js APIs and transforming large-scale graph data into interactive UI components. Fully remote B2B contract within a Poland-based team working standard business hours. 🗂️ Requirements: 7+ years of software development experience, Expert knowledge of React and TypeScript, Strong experience with Node.js and TypeScript for server-side development, Experience building REST and GraphQL APIs, Extensive experience with Redux state management, Proficiency with Storybook for component-driven development, Ability to optimize frontend performance for large-scale datasets, High proficiency in English (B2/C1) 📃 Skills: React, TypeScript, Node.js, Redux, GraphQL, REST, D3.js, GoJS, Cytoscape, Neo4j, Cypher, AGGrid, Storybook, Microservices 🏢 Description: Senior Full Stack Developer (React / Node.js ) The Role As a Full Stack Developer with a strong emphasis on React , you will be responsible for crafting the visual and interactive elements of applications that visualize complex financial and ownership networks. While the backend is built on Node.js , your primary challenge will be turning intricate graph data into seamless, high-performance UI components. Key Responsibilities React Excellence: Lead the development of complex, data-driven web applications using React and TypeScript . Graph Visualization: Transform raw graph data into interactive, responsive UIs using D3.js, GoJS , or similar libraries. Backend Services: Develop and maintain scalable APIs and microservices using Node.js and TypeScript . Data Integration: Work closely with graph engineers to integrate real-time GraphQL data and high-end AG Grid reports. Performance: Optimize the frontend to handle and render large-scale, nested datasets without lag. Architecture: Maintain reusable components in Storybook and ensure a consistent, scalable codebase. Technical Requirements (Must Have) 7+ years of experience in software development. Expert React & TypeScript: Deep knowledge of modern React patterns and performance tuning. Node.js & TypeScript: Solid experience in building server-side applications and REST/GraphQL APIs. State Management: Extensive experience with Redux . Modern Tooling: Proficiency with Storybook for component-driven development. English: High proficiency ( B2/C1 ) for daily collaboration with US and Netherlands-based stakeholders. Nice to Have Data Viz: Experience with D3.js, GoJS , or Cytoscape . Graph Databases: Familiarity with Neo4j, or Cypher Reporting: Advanced knowledge of AG Grid . Assignment Details Contract Type: B2B Work Model: 100% Remote / Work from Home Business Hours: 9:00 – 17:00 (Warsaw Time) Location: Poland-based delivery team

🏢 Summary: Full-time Senior Full Stack Developer role focused on building scalable, data-driven platforms for financial and enterprise sectors using Node.js and React. The position involves designing microservices, developing RESTful APIs, and creating responsive front-end applications in a hybrid work model (Warsaw). 🗂️ Requirements: 5+ years experience as Senior Full Stack Developer, Strong expertise in Node.js, Strong expertise in React, Experience with Express.js, Experience building RESTful or GraphQL APIs, Knowledge of OAuth and JWT authentication, Proficiency in Redux, HTML5, CSS3, ES6+, Experience with Vite, Webpack or Babel, Experience with MySQL or PostgreSQL, Experience with AWS, Azure or GCP, Experience with Docker and Kubernetes, Proficiency with Git 📃 Skills: Node.js, React, Express.js, GraphQL, REST, OAuth, JWT, Redux, HTML5, CSS3, JavaScript, ES6, Vite, Webpack, Babel, MySQL, PostgreSQL, AWS, Azure, GCP, Docker, Kubernetes, Git, SQL, MongoDB, CI/CD 🏢 Description: Senior Full Stack Developer (Node.js + React) 💰 Salary: 23,000-24,800 PLN/Month 💻 Warsaw, Poland (Hybrid - 3 days in office, 2 days remote) 🕦 Full-time ☑️ B2B or CoE We’re looking for a Senior Full-Stack Developer to join a fast-growing international tech company focused on building modern, data-driven platforms that power digital transformation in the financial and enterprise sectors. Requirements: 5+ years of experience as a Senior Full Stack Developer with significant expertise in Node.js and React. Strong experience in building server-side applications using Node.js and Express.js. Hands-on experience with API development and integration, particularly with GraphQL or RESTful services. Strong knowledge of authentication and authorization mechanisms (OAuth, JWT, session-based). Front-end proficiency in React.js, Redux, HTML5, CSS3, and modern JavaScript (ES6+). Familiarity with front-end build tools such as Vite, Webpack, and Babel. Strong experience with databases such as MySQL and  PostgreSQL. Experience with cloud platforms (AWS, Azure, or GCP), as well as containerization and orchestration tools such as Docker and Kubernetes. Strong experience using Git and version control systems. Proficiency in English (both written and spoken). Key Responsibilities: Design, build, and maintain scalable, high-performance server-side applications and RESTful APIs using Node.js and Express.js. Develop and maintain interactive, responsive user interfaces using React.js, Redux, and modern JavaScript (ES6+). Lead the design and implementation of scalable architectures and microservices. Work closely with database engineers to design efficient schemas and manage data interactions using SQL databases or MongoDB. Ensure reliable deployments and smooth release of updates using CI/CD pipelines and Docker. Write unit and integration tests and optimize performance to ensure high-quality code. Collaborate closely with cross-functional teams to define and implement technical solutions. Improve system performance, reliability, and long-term maintainability through optimization and best practices. Get to know DevsData: We are a technology consulting company and a recruitment agency, delivering software solutions to clients from Europe and the US. We work 100% remotely, in an international team, including people from Asia, London, or San Francisco. We employ people with experience in international corporations as well as students of the best technical and business universities. Find out more: https://devsdata.com/

🏢 Summary: Senior Full Stack Developer role focused on architecting and delivering high-performance web applications using React and Node.js. The position involves leading system design, building scalable front-end and back-end solutions, and overseeing cloud-based deployments and DevOps processes. The role includes technical ownership of microservices, APIs, databases, and application performance in a hybrid Warsaw-based setup. 🗂️ Requirements: 7+ years full stack development experience, 2+ years in senior or technical lead role, Expert-level React.js with Hooks and Redux, Advanced JavaScript ES6+ proficiency, Strong Node.js and Express.js experience, Experience designing REST or GraphQL APIs, Experience with OAuth, JWT, sessions, RBAC, Database design and optimization with PostgreSQL, MySQL, or MongoDB, Hands-on Docker experience, Experience with AWS, Azure, or GCP, CI/CD pipeline management experience, Proficiency with Git workflows, Bachelor’s or Master’s in Computer Science or related field 📃 Skills: React, Redux, JavaScript, HTML5, CSS3, Node.js, Express, GraphQL, REST, OAuth, JWT, RBAC, PostgreSQL, MySQL, MongoDB, Docker, Kubernetes, AWS, Azure, GCP, Git, CI/CD, Webpack, Babel, Vite 🏢 Description: 🧩 About the Company Our client is a rapidly growing US-based technology firm with global operations. With a strong commitment to innovation and quality engineering, the company is building a new engineering hub in Warsaw. This is your opportunity to join a high-performing team and play a pivotal role in developing next-generation digital solutions for the private capital markets. 📍 Location & Setup Start remotely and transition to a hybrid model based in Warsaw (3 days/week in the office in the coming months). 🧠 The Role: Senior Full Stack Developer (React & Node.js) We’re looking for an expert-level Senior Full Stack Developer with at least 7 years of professional experience in designing, architecting, and delivering high-performance web applications. You will take ownership of complex technical challenges across both the front-end and back-end, drive architectural decisions, and provide technical leadership and mentorship within the software development lifecycle. 🔧 Key Responsibilities Technical Leadership: Architect and develop scalable, responsive UIs with React.js, Redux, and modern JavaScript (ES6+). System Design: Design, build, and scale advanced server-side applications, microservices architecture, and RESTful/GraphQL APIs with Node.js and Express. Data Architecture: Lead database design, optimization, and integration strategies (PostgreSQL, MySQL, or MongoDB). Quality Assurance: Define testing strategies, write robust unit/integration tests, and establish efficient debugging protocols for the team. DevOps & Deployment: Oversee and optimize CI/CD pipelines, containerization using Docker, and cloud deployments. Agile Mentorship: Lead agile collaboration with product managers, designers, and engineers, while mentoring mid-level and junior developers. Performance: Proactively monitor system performance, identify bottlenecks, and maintain high-availability production-grade applications. Standards: Establish and maintain comprehensive technical documentation and coding standards. 📌 What We’re Looking For Front-End: Expert-level experience with React.js, Hooks, Redux, and complex component-based architecture. Deep mastery of HTML5, CSS3, and ES6+. Advanced configuration and optimization experience with build tools like Webpack, Babel, or Vite. Back-End: Senior-level proficiency in Node.js & Express.js for enterprise applications. Extensive API design and architecture experience (GraphQL highly preferred, alongside REST). Deep understanding and implementation experience with advanced security and authentication protocols: OAuth, JWT, sessions, and RBAC. Databases & DevOps: Proven experience in scaling and optimizing relational and non-relational databases (PostgreSQL, MySQL, or MongoDB). Solid hands-on experience with Docker; Kubernetes experience is highly advantageous. Demonstrated experience designing and deploying applications on cloud platforms (AWS, Azure, or GCP). Advanced proficiency with Git workflows and driving Agile/Scrum methodologies. 🎓 Qualifications Bachelor’s or Master’s in Computer Science or a related field. 7+ years of hands-on experience in full stack development. 2+ years of experience in a senior or technical lead capacity. Proven track record of architecting, deploying, and maintaining high-traffic production applications. 💡 Soft Skills Strategic, analytical thinker and highly effective problem-solver. Strong technical leadership, team collaboration, and cross-functional communication skills. Self-motivated with excellent time management and the ability to drive projects autonomously. Passion for continuous learning, adopting new technologies, and sharing knowledge with the team. 🎁 What’s Offered Competitive salary up to $6,200 USD/month. Hybrid remote role with 3 days form office in the heart of Warsaw Generous Paid Time Off (PTO). Comprehensive full benefits package. The unique chance to shape the technical foundation of a new engineering hub and lead high-impact projects. A supportive, innovation-driven work environment that values technical excellence.

🏢 Summary: Senior Full Stack Developer role for an international product team focused on building scalable applications using TypeScript, React, Node.js, PostgreSQL, and Kafka. The contract is remote, B2B, initially for 6 months with possible extension, and includes collaboration in an agile international environment with AI-powered development tools. 🗂️ Requirements: 8+ years of commercial software development experience, Strong TypeScript experience, Experience with React, Experience with Node.js, Experience with NestJS, Knowledge of PostgreSQL, Knowledge of REST APIs, Knowledge of Kafka, Experience building scalable systems, Daily use of AI coding tools, English level B2+/C1 📃 Skills: TypeScript, React, Node.js, NestJS, PostgreSQL, REST, Kafka, Claude, Cursor, Codex, Copilot 🏢 Description: co.brick talents — powered by AI, powered by people. Senior Full Stack Developer (TypeScript / React / Node.js) Location: Remote Contract: B2B Rate: Up to 150–160 PLN/hour Duration: 6 months with a strong possibility of extension Start: ASAP About the project We are looking for an experienced Senior Full Stack Developer to join an international product development team. You will work on building and enhancing scalable software solutions in a modern technology stack, collaborating with experienced engineers in an agile environment. Your responsibilities Design, develop, and maintain scalable full stack applications. Build high-quality backend services and modern frontend solutions. Develop and integrate REST APIs. Work with PostgreSQL and Kafka-based architectures. Collaborate with cross-functional, international teams. Apply AI-powered coding tools to improve development efficiency and code quality. Requirements 8+ years of commercial software development experience. Strong experience with TypeScript on both the frontend and backend. Hands-on experience with React and Node.js/NestJS . Solid knowledge of PostgreSQL , REST APIs , and Kafka . Experience designing and building scalable systems or software products. Daily use of AI coding tools such as Claude Code, Cursor, Codex, GitHub Copilot , or similar ( must have ). Very good English communication skills ( B2+/C1 , must have ). Nice to have Experience building SaaS products. Experience developing on-premise software solutions. Recruitment process The recruitment process includes a technical assignment (approximately 5 hours) . During the task, you are welcome and encouraged to use AI coding tools , as we value modern software development practices.

🏢 Summary: Senior Fullstack Developer role focused on extending a HubSpot-based CRM with new frontend, backend, and integration functionalities in a fully remote setup. The position involves building custom modules, managing license and trial features, and ensuring reliable integrations between internal and external systems. The developer will take ownership of data flows, webhooks, and system reliability within a small cross-functional team. 🗂️ Requirements: Minimum 5 years of experience as Fullstack Developer, Strong knowledge of React, Strong knowledge of TypeScript, Solid experience with Node.js, Experience with API development, Hands-on experience with webhooks, Experience with system integrations, Ability to extend existing backend codebases, Experience with AI-assisted coding tools, English C1 level, Polish B2 level 📃 Skills: React, TypeScript, Node.js, APIs, Webhooks, HubSpot, CRM, LMS, Authentication, Integrations, Monitoring, Observability, Claude 🏢 Description: Senior Fullstack Developer (React / Node.js) – Fully Remote Location: Fully remote Working hours: 10:00–18:00 (UK time), no travel required Rate: PLN 120–160 / hour Project duration: Initial 2 months, extension very likely Client: International financial institution Process: 2 interview stages Team: 2 Developers, Project Manager, Architect About the Role We are looking for an experienced Senior Fullstack Developer to join a small, cross-functional team working on the expansion of an existing CRM system. The project focuses on extending a HubSpot-based solution with new frontend, backend, and integration functionalities. You will play a key role in designing and building a new custom HubSpot application for internal users, developing license and trial management features, and integrating multiple internal and external systems. The role combines hands-on development with ownership of integrations and data flow reliability. Responsibilities Design and develop a new custom module within an existing HubSpot application Build user-facing interfaces for internal HubSpot users Implement a management panel for customer trials and licenses Integrate the application with existing internal APIs Identify and implement missing backend functionalities Develop integration code in Node.js connecting LMS webhooks with the authentication system Automate user account creation based on LMS-triggered events Automate user roles and permissions assignment based on learning system data Ensure data consistency, reliability, and observability across systems Handle error management, retries, and monitoring of webhook-based flows Requirements Minimum 5 years of professional experience as a Fullstack Developer Very strong knowledge of React and TypeScript Solid experience with Node.js and API development Hands-on experience with webhooks and system integrations Ability to read, understand, and extend existing backend codebases Practical experience using Claude Code or similar AI-assisted coding tools English proficiency at C1 level (daily collaboration with international clients) Polish proficiency at B2 level or higher (internal team communication) What We Offer Fully remote work Competitive hourly rate: PLN 120–160 Sports card (Multisport or equivalent) Private medical healthcare Access to learning and training platforms Small, experienced team with a clear technical direction High likelihood of project extension after 2 months

🏢 Summary: Senior Full-Stack Engineer role focused on designing and evolving scalable SaaS systems using Node.js and React in a 100% remote B2B model. The position involves architectural decision-making, production system ownership, performance optimization, and mentoring within a distributed team. The offer targets experienced engineers capable of leading technical initiatives and ensuring system reliability at scale. 🗂️ Requirements: Minimum 10 years of professional software development experience, Proven experience with SaaS-based systems, Strong knowledge of scalable systems and software architecture, Hands-on experience with Node.js, Hands-on experience with React, Experience designing or evolving system architectures, Experience working with production systems and real users, Experience with monitoring, debugging, and performance optimization, Ability to own major system components and lead technical decisions, Excellent English proficiency 📃 Skills: Node.js, React, JavaScript, SaaS, AWS, GCP, Azure, CI/CD, DevOps, Architecture, Monitoring, Debugging, Performance, Scalability 🏢 Description: For a client, we are looking for a Senior Full-Stack Engineer (NodeJS + React)! Salary: 24 000-27 000 net+VAT B2B 100% remote RESPONSIBILITIES Architecture, production, and reliability experience: Proven experience designing systems from scratch or significantly evolving existing architectures Experience working on production systems with real users Strong understanding of architectural trade-offs (performance, scalability, cost, and maintainability) Experience with monitoring, debugging, and performance optimization in production environments Familiarity with handling production issues and incidents Ownership and leadership: Experience owning major system components or leading technical decisions Ability to work independently with minimal supervision Experience mentoring junior or mid-level developers and collaborating within a team REQUIREMENTS At least 10 years of professional software development experience Proven experience working with SaaS-based systems Strong understanding of scalable systems and software architecture Hands-on experience with Node.js and React Excellent English proficiency and strong communication skills NICE TO HAVE Experience with cloud platforms such as AWS, GCP, or Azure Familiarity with CI/CD pipelines and modern DevOps practices Experience working in distributed or remote teams Product mindset — ability to understand business requirements and translate them into technical solution WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 24 000-27 000 PLN/hour 100% remote work The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, life insurance, Multisport card). WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Iga Olszewska-Magnowska Senior IT Delivery Consultant iga.olszewska@speedapp.pl

🏢 Summary: Seeking a Senior Full-Stack Engineer (NodeJS + React) to design, evolve, and maintain scalable SaaS systems in a fully remote B2B engagement. The role focuses on architecture, production reliability, and technical ownership of key system components. You will work on real-user production systems, ensuring performance, scalability, and maintainability. 🗂️ Requirements: Minimum 10 years of professional software development experience, Proven experience with SaaS-based systems, Strong knowledge of scalable systems and software architecture, Hands-on experience with Node.js, Hands-on experience with React, Experience designing or evolving system architectures, Experience working with production systems, Experience with monitoring, debugging, and performance optimization, Fluent English proficiency 📃 Skills: Node.js, React, JavaScript, SaaS, Architecture, Scalability, Monitoring, Debugging, CI/CD, AWS, GCP, Azure 🏢 Description: For a client, we are looking for a Senior Full-Stack Engineer (NodeJS + React)! Salary: 24 000-27 000 net+VAT B2B 100% remote RESPONSIBILITIES Architecture, production, and reliability experience: Proven experience designing systems from scratch or significantly evolving existing architectures Experience working on production systems with real users Strong understanding of architectural trade-offs (performance, scalability, cost, and maintainability) Experience with monitoring, debugging, and performance optimization in production environments Familiarity with handling production issues and incidents Ownership and leadership: Experience owning major system components or leading technical decisions Ability to work independently with minimal supervision Experience mentoring junior or mid-level developers and collaborating within a team REQUIREMENTS At least 10 years of professional software development experience Proven experience working with SaaS-based systems Strong understanding of scalable systems and software architecture Hands-on experience with Node.js and React Excellent English proficiency and strong communication skills NICE TO HAVE Experience with cloud platforms such as AWS, GCP, or Azure Familiarity with CI/CD pipelines and modern DevOps practices Experience working in distributed or remote teams Product mindset — ability to understand business requirements and translate them into technical solution WHAT DO WE OFFER ON THIS PROJECT? Cooperation based on a B2B contract and rate: 24 000-27 000 PLN/hour 100% remote work The support of a dedicated mentor. In the relationship, we focus on direct communication. When you join speedapp, you will be put in touch with a dedicated mentor who will make sure that you enjoy working with us and with the client. Events and integration meetings, as well as participation in various initiatives, e.g., sports. Access to the benefits offering (medical care, life insurance, Multisport card). WHAT DOES THE RECRUITMENT PROCESS LOOK LIKE? Application: Apply and submit your CV. After the application review, the recruiter will contact selected candidates by phone. Screening: Have a conversation with a speedapp recruiter about your experience. Next steps: The speedapp recruiter will explain the recruitment process for the specific position. The speedapp recruiter will stay in touch with you throughout the entire process. ABOUT SPEEDAPP At speedapp, we believe that an organization is only as good as the people who make it up. We are a team of IT experts and other professionals working for our clients around the world (including Israel, Austria, USA). We go far beyond the HR category. We build IT teams and also help manage them. 👉 10 years of experience 👉 +100 clients worldwide +300 hires per year 💎 We have won the prestigious "Forbes Diamonds" award four times (2022, 2023, 2024, 2025). We are a member of the European Fast Growth Icons network and FinTech Poland. We are ranked 18th among the 100 fastest growing companies 2023 by Clutch. DO YOU HAVE ANY QUESTIONS? Contact the recruiter responsible for this process directly. Iga Olszewska-Magnowska Senior IT Delivery Consultant iga.olszewska@speedapp.pl

🏢 Summary: Senior Full Stack Developer role in a greenfield web application project, responsible for end-to-end architecture and key technical decisions. The position involves building and integrating scalable frontend and backend solutions using modern JavaScript frameworks and BFF architecture. The developer will shape CI/CD processes, ensure code quality, and integrate external systems and CMS platforms. 🗂️ Requirements: Minimum 5 years commercial experience as Fullstack Developer, Strong knowledge of Node.js, Experience with NestJS or Express.js or Fastify, Good knowledge of TypeScript, Experience with React or Next.js or Angular, Experience with REST API or GraphQL integrations, Experience with CMS integrations, Knowledge of BFF architecture, Experience in greenfield projects, Experience with CI/CD pipelines, Communicative English B1/B2 📃 Skills: Node.js, TypeScript, React, Next.js, Angular, NestJS, Express, Fastify, REST, GraphQL, CMS, BFF, Git, CI/CD, ESLint, Prettier, Jest, Cypress, Contentful, Strapi, Sanity, AWS, Azure, GCP, Docker, Sentry, Datadog, NewRelic 🏢 Description: Senior Full Stack Developer (React/Angular, Node.js) m/k/n 📍 Warszawa / model hybrydowy (1 dzień w tygodniu w biurze) Poszukujemy doświadczonego Senior Fullstack Developera (Node.js) do współpracy przy nowoczesnym projekcie realizowanym dla renomowanego studia digitalowego specjalizującego się w zaawansowanych rozwiązaniach webowych i doświadczeniach cyfrowych dla globalnych marek. Projekt Greenfieldowy projekt aplikacji webowej budowanej od podstaw. Rola obejmuje realny wpływ na kierunek techniczny rozwiązania oraz kluczowe decyzje architektoniczne. Zakres obowiązków: projektowanie architektury aplikacji end-to-end dobór technologii i najlepszych praktyk developerskich budowa backendu oraz warstwy frontendowej konfiguracja procesów CI/CD integracje z systemami zewnętrznymi (API, CMS, narzędzia biznesowe) migracje danych i treści code review oraz wsparcie mniej doświadczonych developerów dbanie o jakość kodu, wydajność i skalowalność rozwiązania Wymagania: minimum 5 lat doświadczenia komercyjnego jako Fullstack Developer bardzo dobra znajomość Node.js doświadczenie z frameworkami backendowymi: NestJS / Express.js / Fastify dobra znajomość TypeScript doświadczenie frontendowe w React / Next.js lub Angular doświadczenie w integracjach REST API / GraphQL / CMS znajomość architektury BFF (Backend for Frontend) doświadczenie w projektach budowanych od zera (greenfield) swobodna współpraca z zespołami IT i biznesem komunikatywny angielski (min. B1/B2) Stack technologiczny: Frontend: TypeScript React / Next.js / Angular Backend: Node.js NestJS / Express / Fastify BFF Architecture Narzędzia: Git CI/CD ESLint / Prettier Jest / Cypress Headless CMS (Contentful, Strapi, Sanity) Mile widziane: doświadczenie z chmurą: AWS/ Azure / GCP Docker / konteneryzacja monorepo optymalizacja performance (Core Web Vitals) Design Systems monitoring: Sentry / Datadog / New Relic Szukamy osoby, która: działa samodzielnie i potrafi podejmować decyzje technologiczne dobrze odnajduje się w środowisku dynamicznych projektów ma doświadczenie w budowie produktów od podstaw myśli długofalowo: utrzymanie, rozwój, skalowalność dba o jakość kodu i wysokie standardy techniczne Oferujemy: realny wpływ na architekturę i dobór technologii udział w ambitnym projekcie greenfieldowym współpracę z doświadczonym zespołem ekspertów digitalowych elastyczny model pracy hybrydowej możliwość kontynuacji współpracy po zakończeniu projektu

🏢 Summary: Long-term, fully remote Senior Fullstack Developer role (Java + React) in an American IT sector project, offering 150 PLN/h on B2B (FV) with a one-stage recruitment process. You will design backend logic in Java, build and enhance React-based user interfaces, and work with cloud and container technologies in a 6–8 person international team. The position focuses on developing new business features and maintaining scalable, production-grade systems. 🗂️ Requirements: Senior-level experience with Java, Commercial experience with React and TypeScript, Experience with MariaDB, Experience with ElasticSearch, Experience with Docker, Experience with Kubernetes, Experience with AWS or GCP, Very good English (B2+/C1-), Availability for full-time work in standard Polish business hours 📃 Skills: Java, React, TypeScript, MariaDB, ElasticSearch, Docker, Kubernetes, AWS, GCP, Golang, Node, GithubActions 🏢 Description: W ITLT pomagamy naszym zaprzyjaźnionym firmom przekształcać ambitne pomysły w cyfrową rzeczywistość. Z nastawieniem na wyzwania, ciekawość technologii i zwinność - współtworzymy wyjątkowe rozwiązania IT. Aktualnie poszukujemy osób na stanowisko: Senior Fullstack Developer (Java+React) Konkrety: Stawka: 150 PLN/h na FV Miejsce pracy/praca zdalna: 100% REMOTE Wymiar pracy: Fulltime Sektor: American IT Zespół: 6-8os. Proces rekrutacji: 1-etapowy (spotkanie zdalne via MS Teams). Sporadycznie możliwe dodatkowe krótkie spotkanie - połączone z decyzją Szacowany czas trwania projektu: Długoterminowy Czas pracy/Strefa czasowa : Standardowe polskie godziny pracy Technologie na projekcie: Must have: React, TypeScript, Java, MariaDB, Elastic Search, Docker, Kubernetes, AWS OR GCP Nice to have: Golang, Node, Github Actions Do Twoich głównych obowiązków na tym stanowisku należeć będzie: Implementacja nowych funkcjonalności biznesowych oraz rozwój istniejących modułów Projektowanie logiki backendowej w Javie Rozwój interfejsu użytkownika w React - tworzenie komponentów, obsługa stanu aplikacji, poprawa UX Rozwiązywanie problemów technicznych i analiza błędów produkcyjnych Współpraca z międzynarodowym zespołem - w języku angielskim Ta oferta będzie idealna dla Ciebie, jeśli posiadasz: Seniorskie doświadczenie z Javą Must have: React, TypeScript, Java, MariaDB, Elastic Search, Docker, Kubernetes, AWS OR GCP Nice to have: Golang, Node, Github Actions Bardzo dobry angielski (B2+/C1-) Warto do nas dołączyć, ponieważ oferujemy: Pełną swobodę pracy zdalnej Długofalowe stabilne zatrudnienie Szansę na uczestniczenie w kluczowych projektach dla dużej firmy działającej w bardzo stabilnym sektorze Atrakcyjne wynagrodzenie (adekwatne do umiejętności i doświadczenia) Benefity (Lux Med, MultiSport...) W razie pytań pingnij śmiało na Linkedin'ie do Kuby

🏢 Summary: Long-term B2B offer for a Mid/Senior Fullstack Developer to build and maintain backend services in .NET and frontend applications in React or Angular. The role involves designing REST APIs, working with microservices architecture, and contributing to system architecture and automated testing in an agile environment. Work is available remotely or hybrid with ASAP start. 🗂️ Requirements: 3–8 years commercial experience in .NET or Fullstack development, Strong knowledge of C# and .NET / .NET Core, Experience with ASP.NET Core (Web API, MVC), Practical experience with React or Angular, Experience building SPA applications, Knowledge of MS SQL Server and/or NoSQL databases, Experience with microservices architecture, Knowledge of SOLID, DDD, CQRS patterns, Experience with CI/CD tools, Practical experience with Docker, Experience with unit and integration testing frameworks, Proficiency with Git, English level B2 or higher 📃 Skills: C#, .NET, .NETCore, ASP.NET, React, Angular, SQL, MongoDB, Redis, Docker, Kubernetes, Azure, AWS, xUnit, NUnit, MSTest, Git, CI/CD, AzureDevOps, GitLab, DDD, CQRS, SOLID, Scrum, Kanban 🏢 Description: Mid/Senior Fullstack Developer (.NET + React lub Angular) Lokalizacja: 100% zdalnie / hybrydowo / stacjonarnie (do ustalenia) Forma współpracy: B2B Wynagrodzenie (B2B): Mid do 130 zł/h netto + VAT | Senior do 160 zł/h netto + VAT Start: ASAP / do uzgodnienia Czas trwania projektu: długofalowa współpraca 🏢 O nas RITS Group to firma informatyczna świadcząca najwyższej jakości usługi programistyczne dla klientów z rynku polskiego i międzynarodowego. Realizujemy projekty technologiczne m.in . dla branż finansowej, medycznej i przemysłowej. Stawiamy na jakość, innowacyjność oraz partnerską współpracę. Nasza kultura organizacyjna opiera się na zaufaniu, transparentności i ciągłym rozwoju. Obecnie poszukujemy Senior Fullstack Developera , który dołączy do jednego z kluczowych projektów technologicznych i będzie rozwijał zarówno warstwę backendową, jak i frontendową aplikacji. 💼 Twoje zadania Rozwój aplikacji backendowych w technologii .NET (.NET 6/7/8) Projektowanie i implementacja RESTful API Rozwój aplikacji frontendowych w React lub Angular Integracja warstwy frontendowej z backendem Tworzenie i utrzymywanie warstwy dostępu do danych (Entity Framework / EF Core) Współpraca z innymi developerami, DevOpsami i analitykami Udział w projektowaniu architektury systemu (mikroserwisy, DDD, CQRS) Pisanie testów jednostkowych i integracyjnych, code review Praca w metodykach zwinnych (Scrum / Kanban) ✅ Wymagania Min. 3–8 lat doświadczenia komercyjnego jako programista (.NET / Fullstack) Bardzo dobra znajomość C# oraz platformy .NET / .NET Core Doświadczenie w ASP.NET Core (Web API, MVC) Praktyczna znajomość React lub Angular (wystarczy jeden z tych frameworków) Doświadczenie w pracy z aplikacjami SPA Dobra znajomość baz danych MS SQL Server i/lub NoSQL (MongoDB, Redis) Doświadczenie z mikroserwisami oraz wzorcami projektowymi ( SOLID, DDD, CQRS ) Znajomość narzędzi CI/CD (np. Azure DevOps, GitLab CI) Praktyczna znajomość Docker (mile widziane: Kubernetes, Azure lub AWS) Doświadczenie w testowaniu (xUnit / NUnit / MSTest, mockowanie) Znajomość Git, Jira, Confluence Język angielski na poziomie min. B2 ➕ Mile widziane Doświadczenie z Blazor, MAUI lub SignalR Znajomość RxJS, Redux / NgRx Wiedza z zakresu bezpieczeństwa aplikacji webowych Doświadczenie z systemami kolejkowymi ( Kafka, RabbitMQ ) Znajomość architektury zdarzeniowej Optymalizacja wydajności i profilowanie aplikacji Doświadczenie w pracy w środowiskach chmurowych Nie zwlekaj i zaaplikuj już teraz! Ta rola nie dla Ciebie, ale masz znajomego, który by się sprawdził? Poleć go i zgarnij nawet 5000 zł. Referral Program: Talent from your network