Senior React Developer

🏢 Summary: Full Stack Developer role focused on building scalable Java and React applications, including backend microservices, responsive frontend architecture, REST integrations, and AWS-based operations. The offer includes long-term international project work, flexible hours, modern tooling, and influence over architectural decisions. 🗂️ Requirements: 4–5 years of professional software development experience, Commercial Java experience, Commercial Spring Framework experience, Commercial Spring Boot experience, Commercial React.js experience, Commercial TypeScript experience, JavaScript ES6+ knowledge, Production AWS experience, Microservices architecture knowledge, SQL and relational database experience, REST API integration experience, HTML5, CSS3/SCSS, responsive design, and cross-browser compatibility knowledge, Jest and React Testing Library experience, Modern frontend tooling and build process familiarity, Agile environment experience 📃 Skills: Java, Spring, SpringBoot, React, TypeScript, JavaScript, AWS, SQL, HTML5, CSS3, SCSS, Jest, Kafka, Hadoop, Spark, Next.js, Redux, Zustand 🏢 Description: Your responsibilities: - Design, develop, and maintain scalable full stack applications using Java and React. - Build and maintain backend services with Java, Spring Framework, Spring Boot, SQL, and AWS. - Develop modern, reusable, and responsive user interfaces using React, TypeScript, and JavaScript. - Design and implement scalable frontend architecture and reusable UI components. - Collaborate closely with Product Owners, QA Engineers, and other development teams. - Integrate frontend applications with REST APIs and backend microservices. - Contribute to architectural decisions and technical discussions. - Ensure application performance, scalability, security, and maintainability. - Participate in code reviews, sprint planning, and Agile ceremonies. - Support deployment automation, production operations, and troubleshooting. - Mentor less experienced developers and promote engineering best practices. Our requirements: - Minimum 4–5 years of professional software development experience. - Commercial experience with Java, Spring Framework, and Spring Boot. - Commercial experience with React.js and TypeScript. - Solid understanding of JavaScript (ES6+). - Experience working with AWS in production environments. - Understanding of microservices architecture. - Hands-on experience with SQL and relational databases. - Experience integrating and consuming REST APIs. - Very good knowledge of HTML5, CSS3 / SCSS, responsive design, and cross-browser compatibility. - Experience with frontend testing using Jest and React Testing Library. - Familiarity with modern frontend tooling and build processes. - Ability to work independently, take ownership of delivered solutions, and contribute to system design. - Excellent communication skills and experience working in Agile environments. Nice to have: - Experience with Kafka or other event-driven architectures. - Knowledge of Hadoop or Apache Spark. - Experience with Next.js. - Experience with Redux, Zustand, or similar state management solutions. - Previous experience in Healthcare or Life Sciences projects. What we offer: - Long-term cooperation on an international project. - Flexible working hours. - Opportunity to influence architecture and technical decisions. - Modern technology stack. - Supportive, collaborative engineering culture. - Learning and development opportunities. - Modern equipment and comfortable working environment.

🏢 Summary: Full Stack Developer role focused on building scalable Java and React applications, including backend microservices, responsive interfaces, REST integrations, and AWS-based operations. The offer includes long-term international project work, flexible hours, influence on architecture, and development opportunities. 🗂️ Requirements: 4–5+ years of professional software development experience, Commercial Java experience, Spring Framework and Spring Boot experience, React.js and TypeScript experience, JavaScript ES6+ knowledge, Production AWS experience, Microservices architecture knowledge, SQL and relational database experience, REST API integration experience, HTML5, CSS3/SCSS, responsive design, and cross-browser compatibility knowledge, Jest and React Testing Library experience, Modern frontend tooling and build process familiarity 📃 Skills: Java, React, Spring, SpringBoot, SQL, AWS, TypeScript, JavaScript, HTML5, CSS3, SCSS, Jest, Microservices, REST, ReactTestingLibrary 🏢 Description: ✅ Your responsibilities: Design, develop, and maintain scalable full stack applications using Java and React. Build and maintain backend services with Java, Spring Framework, Spring Boot, SQL, and AWS. Develop modern, reusable, and responsive user interfaces using React, TypeScript, and JavaScript. Design and implement scalable frontend architecture and reusable UI components. Collaborate closely with Product Owners, QA Engineers, and other development teams. Integrate frontend applications with REST APIs and backend microservices. Contribute to architectural decisions and technical discussions. Ensure application performance, scalability, security, and maintainability. Participate in code reviews, sprint planning, and Agile ceremonies. Support deployment automation, production operations, and troubleshooting. Mentor less experienced developers and promote engineering best practices. 🧠 Our requirements: Minimum 4–5 years of professional software development experience. Commercial experience with Java, Spring Framework, and Spring Boot. Commercial experience with React.js and TypeScript. Solid understanding of JavaScript (ES6+). Experience working with AWS in production environments. Understanding of microservices architecture. Hands-on experience with SQL and relational databases. Experience integrating and consuming REST APIs. Very good knowledge of HTML5, CSS3 / SCSS, responsive design, and cross-browser compatibility. Experience with frontend testing using Jest and React Testing Library. Familiarity with modern frontend tooling and build processes. Ability to work independently, take ownership of delivered solutions, and contribute to system design. Excellent communication skills and experience working in Agile environments ⭐ Nice to have: Experience with Kafka or other event-driven architectures. Knowledge of Hadoop or Apache Spark. Experience with Next.js. Experience with Redux, Zustand, or similar state management solutions. Previous experience in Healthcare or Life Sciences projects. 🌟 What we offer: Long-term cooperation on an international project. Flexible working hours. Opportunity to influence architecture and technical decisions. Modern technology stack. Supportive, collaborative engineering culture. Learning and development opportunities. Modern equipment and comfortable working environment.

🏢 Summary: Frontend role on a renewable energy platform focused on building modern React interfaces in a monorepo, with opportunities to contribute to backend work and technical decisions. The offer targets Junior+/Mid developers, including juniors with at least one year of commercial experience, in a hybrid cooperation model. 🗂️ Requirements: 1+ year of commercial frontend experience, React experience, Willingness to support backend tasks, PostgreSQL or MySQL knowledge, API experience, B2 English, Git proficiency, Git-flow proficiency 📃 Skills: React, PostgreSQL, MySQL, APIs, Git, Gitflow 🏢 Description: 🔥 Frontend Developer Wanted - Energize Our Renewable Energy Platform! 🔥 Hey, are you a Frontend enthusiast ready to code for a cause? We're on a mission to revolutionize renewable energy and need your expertise to accelerate our impact. Dive into a cooperation where your coding fuels sustainability and your decisions shape the future. We’re mainly looking for Junior+/ Mid-level developers , but we’re also open to Juniors with at least 1 year of commercial experience . Scope of service: Building Outstanding Interfaces : Use your React expertise to develop modern, intuitive, and user-friendly interfaces within our monorepo architecture. Quality-First Development : Write clean and maintainable code with a focus on unit testing to ensure scalability and reliability. Collaborating Across the Stack : While your focus will be frontend, you’ll also have the chance to contribute to backend development. Shaping the Future : Be involved in architectural decisions, tool selection, and best practices to ensure technical excellence. Teamwork that Matters : Work closely with the client and the team to deliver solutions that make a real impact on sustainability. Requirements: Frontend Experience : 2 years of experience in frontend development (React as your main tool). Openness to Backend : Willingness to occasionally work on backend tasks. Database Knowledge : Familiarity with PostgreSQL or MySQL. API Savvy : Solid experience working with APIs. Communication Skills : Strong collaboration abilities and at least a B2 level of English. Version Control : Proficiency with git and the git-flow process. Nice to have: Experience with Ruby on Rail or different backend technologies Familiarity with Postgresql  Cooperation mode : hybrid cooperation; on-site coordination possible/as needed.

🏢 Summary: Develop and enhance secure, intuitive React-based web applications that help prevent payment fraud. The role works in a multidisciplinary Scrum team, integrating frontend solutions with backend services and cloud infrastructure. 🗂️ Requirements: 4+ years of professional React application development experience, JavaScript, TypeScript, HTML5 and CSS3 expertise, RESTful API integration experience, Microfrontend experience, Frontend performance optimisation and responsive design experience, Agile Scrum experience, Git, Webpack, CI/CD pipeline and Jenkins experience, Basic NestJS knowledge, AWS knowledge: CloudWatch, S3, DynamoDB and ECS 📃 Skills: React, JavaScript, TypeScript, HTML5, CSS3, SASS, REST, Microfrontends, Git, Webpack, CI/CD, Jenkins, NestJS, AWS, CloudWatch, S3, DynamoDB, ECS 🏢 Description: Summary: The Frontend Developer role focuses on enhancing user experience through the development of innovative, secure, and intuitive web solutions aimed at preventing payment fraud. Must Haves 4+ years of professional experience developing applications with React and NestJs. Strong experience with JavaScript, TypeScript, HTML5, and CSS3 (SASS, styled-components, or similar). Experience integrating with RESTful APIs and working with micro frontends. Experience with frontend performance optimisation and responsive design. Good understanding of Agile methodologies (Scrum). Experience using Git, Webpack, CI/CD pipelines, and Jenkins. Familiarity with AWS services, particularly: CloudWatch, S3, DynamoDB, ECS (Elastic Container Service). Nice to Haves Knowledge of component libraries such as Material UI or Chakra UI. Experience with frontend testing frameworks such as Jest, React Testing Library, or Cypress. Understanding of cloud-native architectures and modern deployment practices. A proactive, solution-oriented mindset with a strong sense of ownership. Excellent communication skills and the ability to work effectively in cross-functional teams. Other Details Team Structure: Multi-disciplinary Scrum team consisting of Frontend Developers, Backend Developers, DevOps Engineers, QA Engineers, UX/UI Designers, and Product Owners.

🏢 Summary: Oferta dotyczy rozwoju i utrzymania aplikacji webowych w React, w tym tworzenia komponentów i nowych funkcjonalności. Rola obejmuje integrację z API, optymalizację wydajności, usuwanie błędów oraz współpracę z zespołem projektowym. 🗂️ Requirements: Minimum 3 lata doświadczenia w tworzeniu aplikacji frontendowych, Bardzo dobra znajomość React, Bardzo dobra znajomość JavaScript, Znajomość HTML5 i CSS3, Znajomość TypeScript, Doświadczenie w integracji z REST API, Znajomość Git, Znajomość zasad tworzenia responsywnych aplikacji webowych, Znajomość dobrych praktyk tworzenia i organizacji kodu frontendowego, Umiejętność debugowania i optymalizacji aplikacji 📃 Skills: React, JavaScript, HTML5, CSS3, TypeScript, REST, Git 🏢 Description: Opis projektu Poszukujemy Frontend Developera odpowiedzialnego za rozwój aplikacji webowych w technologii React. Rola obejmuje tworzenie i rozwijanie interfejsów użytkownika, implementację nowych funkcjonalności oraz współpracę z pozostałymi członkami zespołu projektowego. Zakres współpracy • Rozwój aplikacji frontendowych z wykorzystaniem React • Implementacja nowych funkcjonalności i komponentów interfejsu użytkownika • Rozwój oraz utrzymanie istniejącego kodu • Integracja warstwy frontendowej z usługami backendowymi poprzez API • Tworzenie responsywnych interfejsów webowych • Optymalizacja wydajności aplikacji • Diagnozowanie i usuwanie błędów • Dbanie o jakość, czytelność oraz reużywalność kodu • Współpraca z zespołem projektowym przy rozwoju aplikacji Wymagania obligatoryjne • Minimum 3 lata doświadczenia w tworzeniu aplikacji frontendowych • Bardzo dobra znajomość React • Bardzo dobra znajomość JavaScript • Znajomość HTML5 i CSS3 • Znajomość TypeScript • Doświadczenie w integracji aplikacji z REST API • Znajomość systemu kontroli wersji Git • Znajomość zasad tworzenia responsywnych aplikacji webowych • Znajomość dobrych praktyk tworzenia i organizacji kodu frontendowego • Umiejętność debugowania oraz optymalizacji aplikacji