Fullstack Developer (Go / React / Node.js)

🏢 Summary: Offer for an experienced React Developer to work on an advanced financial web portal for managing accounts and investments within an Agile environment. The role focuses on building secure, high-quality frontend solutions using modern technologies and best practices. The project is in the finance/stock exchange industry and emphasizes innovation and code quality. 🗂️ Requirements: Minimum 5 years of practical experience with ReactJS and its ecosystem, Knowledge of Progressive Web App principles, Ability to write clean, testable and maintainable code, Knowledge of GIT, Ability to write unit tests using Karma and Jasmine, Experience in designing RESTful APIs, Deep understanding of OOP, Understanding of reactive programming standards, Good knowledge of Docker, Good knowledge of Kubernetes, Experience with CI/CD systems 📃 Skills: React, ReactJS, JavaScript, PWA, REST, Karma, Jasmine, Git, OOP, Docker, Kubernetes, CI/CD 🏢 Description: At Link Group we build tech teams for Fortune 500 companies and the hottest startups in the world. We run many different projects for which we are looking for experienced and talented candidates for clients from various industries. If you join us, we will make sure that the offer is tailored to your needs. We want you to receive tasks that match your interests, meet your financial expectations and, above all, will allow you to develop in the professional field. Currently, we are looking for React developers to join our teams and work on the most advanced, innovative and diverse projects on the IT market. The project you will join is from the finance/stock exchange industry. Our client creates a web portal to manage financial accounts and make financial investments. Our Agile teams strive to use the latest technologies that ensure an appropriate level of security. Tech stack: React, Web App principles, RESTful API, Karma/Jasmine Responsibilities: Working on ambitious projects using the best technologies and standards; Generating and maintaining your code in accordance with the coding standard and best practices Designing technical solutions for new functionalities and maintaining the existing ones; Investigating, debugging, and delivering fixes for critical production incidents; Researching on the latest technologies to meet future business needs Requirements: At least 5 years of practical experience and knowledge of ReactJS and its ecosystem; Knowledge of progressive Web App principles Writing clean, testable and easily maintainable code Ability to clearly communicate and discuss ideas & concepts Knowledge of GIT Knowledge how to write unit tests with Karma/Jasmine Experience with designing RESTful APIs Deep understanding of OOP and reactive programming standards Good knowledge of Docker and Kubernetes Experience in continuous integration and continuous delivery systems We offer: Private healthcare Sport card Foreign languages classes Life insurance Cafeteria system

🏢 Summary: Offer for a React Developer to build and maintain a financial web portal for managing accounts and investments in the finance/stock exchange industry. The role involves developing new features, maintaining existing functionalities, and ensuring high code quality and security within Agile teams. The project uses modern web technologies and follows best coding and testing standards. 🗂️ Requirements: Minimum 1 year experience with ReactJS, Knowledge of ReactJS ecosystem, Knowledge of Progressive Web App principles, Ability to write clean, testable, maintainable code, Knowledge of Git 📃 Skills: React, ReactJS, JavaScript, PWA, Git, REST, Karma, Jasmine 🏢 Description: At Link Group we build tech teams for Fortune 500 companies and the hottest startups in the world. We run many different projects for which we are looking for experienced and talented candidates for clients from various industries. If you join us, we will make sure that the offer is tailored to your needs. We want you to receive tasks that match your interests, meet your financial expectations and, above all, will allow you to develop in the professional field. Currently, we are looking for React developers to join our teams and work on the most advanced, innovative and diverse projects on the IT market. The project you will join is from the finance/stock exchange industry. Our client creates a web portal to manage financial accounts and make financial investments. Our Agile teams strive to use the latest technologies that ensure an appropriate level of security. Tech stack: React, Web App principles, RESTful API, Karma/Jasmine Responsibilities: Working on ambitious projects using the best technologies and standards; Generating and maintaining your code in accordance with the coding standard and best practices Designing technical solutions for new functionalities and maintaining the existing ones; Investigating, debugging, and delivering fixes for critical production incidents; Researching on the latest technologies to meet future business needs Requirements: At least 1 year of practical experience and knowledge of ReactJS and its ecosystem; Knowledge of progressive Web App principles Writing clean, testable and easily maintainable code Ability to clearly communicate and discuss ideas & concepts Knowledge of GIT Nice to have: Knowledge how to write unit tests with Karma/Jasmine Experience with designing RESTful APIs Understanding of OOP and reactive programming standards Basic knowledge of Docker and Kubernetes Experience in continuous integration and continuous delivery systems We offer: Private healthcare Sport card Foreign languages classes Life insurance Cafeteria system

🏢 Summary: Opportunity for an experienced React Developer to join an Agile team building a secure web portal for financial account management and investment services in the finance/stock exchange industry. The role involves developing new features, maintaining existing functionalities, and ensuring high code quality using modern technologies and best practices. 🗂️ Requirements: Minimum 3 years of experience with ReactJS and its ecosystem, Knowledge of Progressive Web App principles, Experience designing and consuming RESTful APIs, Ability to write unit tests using Karma and Jasmine, Knowledge of Git version control, Understanding of OOP and reactive programming, Basic knowledge of Docker and Kubernetes, Experience with CI/CD systems, Ability to write clean, testable, maintainable code 📃 Skills: React, JavaScript, REST, Karma, Jasmine, Git, Docker, Kubernetes, CI/CD, OOP, PWA 🏢 Description: At Link Group we build tech teams for Fortune 500 companies and the hottest startups in the world. We run many different projects for which we are looking for experienced and talented candidates for clients from various industries. If you join us, we will make sure that the offer is tailored to your needs. We want you to receive tasks that match your interests, meet your financial expectations and, above all, will allow you to develop in the professional field. Currently, we are looking for React developers to join our teams and work on the most advanced, innovative and diverse projects on the IT market. The project you will join is from the finance/stock exchange industry. Our client creates a web portal to manage financial accounts and make financial investments. Our Agile teams strive to use the latest technologies that ensure an appropriate level of security. Tech stack: React, Web App principles, RESTful API, Karma/Jasmine Responsibilities: Working on ambitious projects using the best technologies and standards; Generating and maintaining your code in accordance with the coding standard and best practices Designing technical solutions for new functionalities and maintaining the existing ones; Investigating, debugging, and delivering fixes for critical production incidents; Researching on the latest technologies to meet future business needs Requirements: At least 3 years of practical experience and knowledge of ReactJS and its ecosystem; Knowledge of progressive Web App principles Writing clean, testable and easily maintainable code Ability to clearly communicate and discuss ideas & concepts Knowledge of GIT Knowledge how to write unit tests with Karma/Jasmine Experience with designing RESTful APIs Understanding of OOP and reactive programming standards Basic knowledge of Docker and Kubernetes Experience in continuous integration and continuous delivery systems We offer: Private healthcare Sport card Foreign languages classes Life insurance Cafeteria system

🏢 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-level Full Stack Developer role focused on building and delivering new features for a regulatory compliance platform used by global e-commerce brands. The position involves end-to-end feature development in a modern stack, collaborating in an Agile team from concept to production. You will contribute to high-quality, scalable software using React, Next.js, Node.js, and GraphQL. 🗂️ Requirements: 3+ years of commercial software development experience, Strong knowledge of JavaScript, HTML, CSS, Proficiency in React, Experience with Node.js, Experience with SQL or GraphQL, Familiarity with Git, Experience with CI/CD pipelines, Experience with at least one major cloud provider (AWS preferred), Degree in Computer Science or completion of a reputable coding bootcamp 📃 Skills: JavaScript, HTML, CSS, React, Next.js, Node.js, TypeScript, GraphQL, SQL, AWS, Git, CI/CD, Jira, DevOps 🏢 Description: About Us We are a Gliwice-based IT company supporting a British startup that helps global e-commerce brands (food, supplements, cosmetics) navigate complex regulatory compliance through an intelligent, structured platform. The Role As a Mid-level Full Stack Developer, you will join the product engineering team to implement new features for the platform. You will work in a modern and supportive environment, seeing projects through from concept to delivery while learning from highly skilled senior engineers. Key Responsibilities Full Stack Development: Build and ship new features using React, Next.js, Node.js, and GraphQL. Project Delivery: Collaborate with the team to take features from initial requirements to production-ready code. Code Quality: Participate in code reviews and ensure the delivery of high-quality software. Agile Collaboration: Use tools like Jira/DevOps to manage workflows and contribute to team success in an Agile environment. Requirements Experience: 3+ years of professional software development experience in a commercial environment. Frontend: Strong knowledge of JavaScript/HTML/CSS and proficiency in React. Backend & Data: Experience with Node.js and database programming (SQL/GraphQL). Cloud & DevOps: Familiarity with Git, CI/CD, and at least one major cloud provider (preferably AWS). Education: Degree in Computer Science or completion of a reputable coding bootcamp. Mindset: Proactive learner, strong communicator, and a team player who takes ownership of tasks. Tech Stack: React, Next.js, Node.js, TypeScript, GraphQL, AWS.

🏢 Summary: Senior Full Stack Developer role focused on designing and delivering new features for a regulatory compliance platform using a modern JavaScript stack. The position involves end-to-end development, architectural design on AWS cloud, and technical leadership within an Agile environment. You will shape the technical direction of the product while building scalable, production-ready solutions. 🗂️ Requirements: 5+ years professional software development experience, High proficiency in React, Experience with Next.js, Strong Node.js skills, Advanced GraphQL and SQL knowledge, Experience with AWS cloud infrastructure, Experience with Git and CICD pipelines, Degree in Computer Science or equivalent 📃 Skills: React, Next.js, Node.js, TypeScript, GraphQL, SQL, AWS, Terraform, Serverless, Git, CICD, DevOps, Jira 🏢 Description: About Us We are a Gliwice-based IT company supporting a British startup that helps global e-commerce brands (food, supplements, cosmetics) navigate complex regulatory compliance through an intelligent, structured platform. The Role As a Senior Full Stack Developer, you will join the product engineering team to drive the platform from concept to delivery. You will work in a modern, supportive environment, implementing new features and shaping the technical direction of the product alongside a team of highly skilled engineers. Key Responsibilities End-to-End Delivery: Design and implement new features using our modern stack (React, Next.js, Node.js, GraphQL). Architecture & Design: Apply architectural principles to build scalable solutions on AWS cloud infrastructure. Leadership: Lead code reviews, mentor junior/mid-level colleagues, and influence strategic technical decisions. Collaboration: Work closely with stakeholders and cross-functional teams in an Agile environment (DevOps/Jira). Requirements Experience: 5+ years of professional software development experience. Frontend: High proficiency in React; experience with Next.js is highly advantageous. Backend & Data: Strong skills in Node.js and advanced database programming (GraphQL/SQL). DevOps: Deep understanding of Git, CI/CD pipelines, and cloud platforms (preferably AWS). Education: Degree in Computer Science or equivalent reputable coding bootcamp. Mindset: Proactive leader with excellent communication skills and a "builder" mentality. Tech Stack: React, Next.js, Node.js, TypeScript, GraphQL, AWS (Serverless/Terraform).

🏢 Summary: Mid-level Full-Stack Software Engineer (Go) role focused on building and scaling a cloud-based logistics platform for SMEs. The position involves developing API-first integrations, implementing scalable services, and owning the full development lifecycle in a remote, agile environment. You will influence system design, enhance automation, and contribute to evolving the tech stack. 🗂️ Requirements: 4+ years of full-stack software development experience, Strong expertise in GoLang, Strong expertise in TypeScript, Strong expertise in React, Experience with AWS (App Runner, RDS, CloudWatch), Experience with MySQL, Experience with GitLab CI/CD, Experience working in startup or agile environments, Ability to design and build scalable cloud services, Experience with API integrations 📃 Skills: GoLang, TypeScript, React, AWS, AppRunner, RDS, CloudWatch, MySQL, GitLab, CI/CD, Pulumi, APIs 🏢 Description: Our Client is an ambitious tech company on a mission to create a frictionless shipping experience for small and medium-sized enterprises. They replace outdated logistics processes with a seamless digital platform, wrapping real-time pricing, comparison, booking, and tracking into a clean, unified interface. Role We are seeking a seasoned Mid-level Full-Stack Software Engineer (Go) to join a dynamic tech team. In this role, you’ll influence the technical foundation of the platform, develop new features, and maintain existing code. You will collaborate closely with product managers, designers, and customer success teams to deliver impactful solutions and move the product forward. Responsibilities Design and implement scalable cloud services using GoLang, React, and TypeScript. Build API-first integrations with e-commerce platforms and logistics providers. Enhance operational efficiency by automating processes within the platform. Own the full development cycle, from concept to deployment. Shape the technical roadmap, influence system design, and mentor junior engineers. Engage in pair programming and code reviews to maintain high-quality standards. Contribute to the evolution of the tech stack, best practices, and AI-driven development. Key competences 4+ years of software development experience, with a strong full-stack background. Expertise in GoLang, TypeScript, React, AWS (App Runner, RDS, CloudWatch), and MySQL. Familiarity with GitLab CI/CD and Pulumi (nice to have). A problem-solving mindset—you are excited by complex challenges and scalable solutions. Excellent collaboration and communication skills. Experience in startups or agile environments is a must ; you should be comfortable with rapid iteration. Salary and Conditions Salary up to 6 000 Euro per month 100% remote from Poland B2B contract signed directly with our Client Start ASAP Benefits Work with the latest technologies on the market within a mature, low-ego development culture. Be part of a curious, collaborative, and encouraging environment that is Great Place to Work certified.

🏢 Summary: Frontend React Developer role focused on building and scaling modern web applications using React and Next.js in distributed, cloud-based environments. The position involves developing reusable components, integrating with APIs and cloud services, and ensuring high performance, security, and code quality through testing and best practices. The role requires strong experience in scalable architectures and collaboration within microservices-based systems. 🗂️ Requirements: 5+ years of commercial experience with React, Strong knowledge of JavaScript and TypeScript, Practical experience with React hooks, routing, and state management, Experience in distributed systems or microservices environments, Experience with cloud platforms (GCP preferred), Experience building scalable applications consuming REST APIs and JSON, Knowledge of data structures and algorithms, Proficiency in HTML and modern CSS approaches, Experience with automated testing (unit, integration, end-to-end), Ability to debug and optimize applications using browser developer tools, Experience building responsive web interfaces 📃 Skills: React, Next.js, JavaScript, TypeScript, HTML, CSS, Tailwind, SASS, CSSModules, REST, JSON, GCP, Microservices, UnitTesting, IntegrationTesting, E2E, BrowserTools, DataStructures, Algorithms 🏢 Description: We are looking for a Frontend React Developer for our client – a global technology consulting company focused on data, analytics, and cloud-based solutions, supporting international organizations in building scalable digital products. They operate in a distributed environment, combining strong engineering practices with a business-oriented mindset to deliver impactful solutions across multiple industries. Your responsibilities Build and enhance modern web applications using React and Next.js Create reusable components and contribute to scalable frontend architecture Work closely with cross-functional teams including backend engineers, data specialists, and product stakeholders Improve performance, security, and overall user experience of applications Connect frontend layers with APIs and cloud-based services Maintain high development standards through testing and clean coding practices. Requirements At least 5 years of hands-on experience with React in commercial projects Strong command of JavaScript and TypeScript Practical understanding of React fundamentals, including hooks, routing, and state management solutions Experience working in distributed systems or microservices environments Exposure to cloud platforms (GCP experience is an advantage) Background in developing scalable applications that consume REST APIs and work with JSON data Solid grasp of core programming concepts such as data structures and algorithms Good knowledge of HTML and modern CSS approaches (e.g. Tailwind, SASS, CSS Modules, or similar tools) Experience with automated testing (unit, integration, and end-to-end) Ability to debug and optimize applications using browser developer tools Experience in building responsive and user-friendly interfaces across devices Strong communication skills and experience working in collaborative, distributed teams Self-driven approach with a strong sense of ownership English proficiency at B2 + level or higher.

🏢 Summary: Full Stack Developer role focused on building and evolving a modern web application platform with complex workflows and data-driven features. The position involves developing and maintaining both frontend and backend components, ensuring scalability, performance, and reliability. You will collaborate within a cross-functional team to deliver iterative improvements using modern development practices and AI-assisted tools. 🗂️ Requirements: Experience in full stack web application development, Hands-on experience with React, Experience with C# and .NET or comparable backend technologies, Practical experience with SQL-based databases and writing queries, Experience using AI-assisted development tools (e.g., Claude, Cursor), Solid understanding of Git and version control workflows, Ability to work with and extend existing codebases 📃 Skills: React, TypeScript, C#, .NET, SQL, Git, REST, Claude, Cursor 🏢 Description: Project overview The project is a web based application platform designed to support complex user workflows and data driven features. It focuses on performance, maintainability, and iterative delivery of new capabilities. Team You will be part of a cross functional development team consisting of full stack developers, frontend specialists, backend engineers, and QA engineers. The team works collaboratively, reviews code regularly, and follows shared development standards and branching practices. Position overview We are looking for a Full Stack Developer to contribute to the development and evolution of a modern web application platform. You will work on both frontend and backend components, focusing on building reliable, scalable features and improving existing functionality. The role combines hands on development with close collaboration across engineering and product roles. Technology stack React, TypeScript, C#, .NET, SQL based databases, Git, REST APIs, AI assisted development tools such as Claude and Cursor Responsibilities Develop and maintain frontend features using React and related technologies Build and support backend services using C# and .NET Collaborate with team members on feature design, implementation, and code reviews Work with SQL based databases to design, query, and optimize data storage Use AI assisted development tools to improve development efficiency and code quality Follow established Git workflows and branching strategies Participate in troubleshooting, debugging, and performance improvements Requirements Experience building web application platforms in a full stack role Hands on experience with React for frontend development Experience with C# and .NET or comparable backend technologies Understanding of SQL based databases and practical experience writing queries Experience using AI tools to support software development, including Claude or Cursor Solid understanding of Git, version control, and common branching flows Ability to work with existing codebases and contribute to ongoing development Nice to have Experience with cloud based environments Familiarity with CI CD pipelines Experience working on large scale or long term web platforms Exposure to performance optimization and application monitoring What We Offer: Vacation days : Up to 26 business days per year. 10 illness/special days off per year (fully paid, no medical papers needed) for all contract types Health and life insurance (Luxmed) MyBenefit platform with Multisport option Internal psychological support service English language classes from the first working day Access to external learning platforms : O’Reilly, LinkedIn Learning, Udemy, and a wide catalog of diverse internal training Flexible workplace : work from the office, from home, or choose a hybrid option Tech Skills Mentoring Program Opportunities to develop as a public speaker, mentor, or technical interviewer Fully paid idle (bench) when not involved in a project Certification reimbursement (AWS, GCP, Microsoft, etc.)

🏢 Summary: Senior FullStack Developer role in a fast-growing SaaS environment, responsible for designing and delivering scalable, high-performance web applications using NestJS and NextJS. The position involves leading architectural decisions, ensuring code quality, optimizing system performance, and mentoring engineers across cross-functional squads. You will drive backend and frontend development, CI/CD reliability, and production stability in a modern, zero-legacy stack. 🗂️ Requirements: 5+ years of fullstack development experience, Strong experience with NestJS, Node.js, NextJS, and TypeScript, Strong knowledge of PostgreSQL, data modeling, and optimization, Experience building and consuming REST APIs with JWT authentication, Ability to lead architecture decisions and enforce code quality, Experience with CI/CD pipelines and Docker, Frontend performance optimization experience (SSR, lazy loading, state management), Ability to collaborate in cross-functional teams (product, QA, design) 📃 Skills: NestJS, Node.js, NextJS, TypeScript, PostgreSQL, REST, JWT, CI/CD, Docker, Kubernetes, ArgoCD, Storybook, React, Kafka, RabbitMQ, AWS, Terraform, Sentry, Datadog, Groundcover 🏢 Description: 1. Job Purpose We are a fast-growing tech company with a portfolio of SaaS products serving diverse industries. Innovation, performance, and design precision are core to our values. As we scale, we are looking for a talented Senior FullStack Developer to join our team and take a key role in crafting highly performant, maintainable, and user-focused web applications. 2. Key Responsibilities Contribute to both backend (NestJS) and frontend (NextJS) systems by designing and building scalable, secure, and maintainable features, while leading architecture decisions across services, APIs, and cross-stack boundaries. Champion clean code, modular design, and testability through active contribution, reusable components, and mentoring. Drive system-level decisions around performance, observability, and scalability, and ensure alignment between product goals and technical implementation. Own and enforce code quality via reviews, maintain CI/CD reliability, and collaborate closely with DevOps to ensure release stability and consistent environments. Monitor and optimize system performance, define logging and alerting standards, and lead incident response and continuous improvement efforts. Work closely with product, QA, and designers to unblock delivery, while mentoring engineers and fostering technical alignment across squads. 3. Required Skills & Qualifications Experience: 5+ years of fullstack development experience; NestJS , Node.js , NextJS , and TypeScript Strong understanding of PostgreSQL , data modeling, and optimization techniques Solid experience building and consuming REST with secure JWT-based auth flows Proven ability to lead architecture decisions, enforce code quality, and guide teams through technical complexity Familiarity with CI/CD pipelines , Docker , and environment management (bonus: K8s, ArgoCD) Experience with frontend performance optimization (SSR, lazy loading, state management) Comfortable working in cross-functional squads with product, QA, and design Good communication skills Nice to Have: Experience with component libraries (e.g., Storybook, React UI) or design systems Exposure to event-driven systems using tools like Kafka, RabbitMQ, or AWS SNS/SQS Knowledge of Infrastructure as Code (Terraform) Background in observability tooling (e.g., Sentry, Datadog, Groundcover) and defining alerting/logging standards Contributions to internal platforms, shared packages , or developer experience tools Soft Skills Clear written and async communication, especially in distributed teams Systemic thinking — sees the bigger picture across stack, squads, and product Ownership mindset, from design to delivery to incident resolution Pragmatic decision-making, balancing trade-offs in real-world scenarios 4. Key Performance Indicators (KPIs) End-to-end feature delivery reliability Architecture quality and system scalability Code review throughput and mentorship impact Production stability and issue resolution time Documentation, testing, and developer experience 5. What We Offer Competitive compensation 22 paid vacation days + local national holidays Annual learning & development budget Opportunity to impact a fast-growing multi-product company Cross-functional projects, modern stack, and zero legacy burden