React Developer

🏢 Summary: Frontend Developer role focused on building and maintaining modern web applications using React.js. The position involves creating responsive, user-centered interfaces, integrating RESTful APIs, and delivering scalable, maintainable frontend solutions. Emphasis is placed on performance, accessibility, and clean code standards. 🗂️ Requirements: 3–4+ years commercial frontend development experience, Strong hands-on experience with React.js, Proficiency in modern JavaScript (ES6+), Solid knowledge of HTML5 and CSS3, Experience with responsive design principles, Experience integrating RESTful APIs, Understanding of UI/UX best practices, Familiarity with state management, Experience with component-based architecture, Experience with Git and collaborative workflows, Ability to write scalable and maintainable code, Strong debugging and problem-solving skills 📃 Skills: React, JavaScript, ES6, HTML5, CSS3, REST, API, Git, UI, UX 🏢 Description: Responsibilities Develop and maintain modern web applications using React.js . Create responsive and intuitive user interfaces with a strong focus on usability and user experience. Connect frontend applications with RESTful APIs and backend systems. Translate business and design requirements into scalable frontend solutions. Write clean, reusable, and maintainable code following frontend development standards. Collaborate closely with designers, product owners, and backend engineers. Optimize application performance, accessibility, and cross-browser compatibility. Requirements 3–4+ years of commercial experience in frontend development. Strong hands-on experience with React.js and modern JavaScript (ES6+). Solid knowledge of HTML5, CSS3, and responsive design principles. Experience integrating APIs and working with backend services. Understanding of UI/UX best practices and user-centered design. Familiarity with state management and component-based architecture. Experience with Git and collaborative development workflows. Ability to write efficient, scalable, and well-structured frontend code. Strong problem-solving and debugging skills.

🏢 Summary: The offer is for a Senior Frontend Developer responsible for building responsive user interfaces with React.js and rapidly prototyping new features with a strong focus on UX. The role involves close collaboration with product and design teams, integrating APIs and backend services, and applying modern CSS and JavaScript best practices. It emphasizes high-quality frontend development and effective use of design tools for wireframes and mockups. 🗂️ Requirements: 5+ years frontend development experience, Experience with React.js for responsive UI development, Ability to prototype features with UX focus, Experience integrating APIs and backend services, Strong knowledge of modern CSS, Strong knowledge of modern JavaScript, Experience collaborating with product and design teams, Experience using design tools for wireframes and mockups 📃 Skills: React, JavaScript, CSS, HTML, APIs, UX, Wireframing, Prototyping 🏢 Description: Tasks Build responsive user interfaces with React.js Rapidly prototype new features with a focus on UX design Collaborate with product and design teams to refine user experience Integrate APIs and backend services Apply modern CSS and JavaScript best practices Utilize design tools for wireframes and mockups Requirements At least 5 years of professional experience in frontend development Experience in building responsive user interfaces using React.js Ability to rapidly prototype new features with strong focus on UX design Experience in collaboration with product and design teams Knowledge of API and backend service integration Good understanding of modern CSS and JavaScript best practices Experience with design tools for creating wireframes and mockups Offer Multisport card Private healthcare Access to an e‑learning platform Group life insurance

🏢 Summary: Senior Frontend Developer role focused on designing, developing and maintaining web applications using React and TypeScript, with close integration to REST APIs. The position involves performance optimization, code quality assurance, and adherence to security and W3C standards. The role also includes managing build processes and collaborating on technical solution design. 🗂️ Requirements: Higher education in Computer Science or related field, Minimum 5 years of commercial experience in web application development, Very good knowledge of JavaScript (ES6/ES7), Very good knowledge of TypeScript, Very good knowledge of HTML5, Very good knowledge of CSS3, Experience with React (Redux, Saga), Experience with Node.js, Experience with NPM, Experience with Bootstrap, Experience with jQuery, Experience with Webpack, Experience with Gulp or Grunt, Experience with SASS or LESS, Knowledge of OOP design patterns, Knowledge of OWASP Top 10, Experience with REST API integration, Knowledge of W3C standards, Ability to optimize web application performance, Experience with Git, English proficiency for working with technical documentation 📃 Skills: JavaScript, TypeScript, HTML5, CSS3, React, Redux, Saga, Node.js, NPM, Bootstrap, jQuery, Webpack, Gulp, Grunt, SASS, LESS, OOP, OWASP, REST, W3C, Git, ES6, ES7 🏢 Description: Twój zakres obowiązków Projektowanie, rozwój i utrzymanie aplikacji webowych (frontend + integracje) Tworzenie nowych funkcjonalności w oparciu o React oraz TypeScript Współpraca z zespołem backendowym przy integracji REST API Dbanie o jakość kodu (code review, stosowanie dobrych praktyk i wzorców projektowych) Optymalizacja wydajności aplikacji oraz poprawa UX/UI Utrzymanie zgodności ze standardami W3C oraz zasadami bezpieczeństwa (OWASP Top 10) Udział w analizie wymagań i projektowaniu rozwiązań technicznych Zarządzanie zależnościami i procesem budowania aplikacji (Webpack, Gulp/Grunt) Praca z systemem kontroli wersji Git Nasze wymagania Wykształcenie wyższe (preferowane kierunki informatyczne lub pokrewne) Minimum 5 lat doświadczenia komercyjnego w tworzeniu aplikacji webowych Bardzo dobra znajomość: JavaScript (ES6/ES7), TypeScript, HTML5, CSS3 Doświadczenie w pracy z: React (Redux, Saga), Node.js, NPM, Bootstrap, jQuery, Webpack oraz, Gulp/Grunt, Preprocesorami CSS (SASS/LESS) Znajomość wzorców projektowych (OOP) Znajomość zagadnień bezpieczeństwa aplikacji (OWASP Top 10) Doświadczenie w pracy z REST API Znajomość standardów W3C Umiejętność optymalizacji wydajności aplikacji Znajomość systemu kontroli wersji Git Znajomość języka angielskiego na poziomie umożliwiającym pracę z dokumentacją techniczną Mile widziane Doświadczenie w pracy w metodykach Agile/Scrum Znajomość narzędzi do lintowania (TSlint/JSLint) i dbałość o jakość kodu Doświadczenie w pracy z dużymi aplikacjami frontendowymi (SPA) Umiejętność pisania testów jednostkowych i integracyjnych Znajomość CI/CD Doświadczenie w pracy z nowoczesnymi narzędziami developerskimi i automatyzacją buildów Zainteresowanie nowymi technologiami frontendowymi i trendami

🏢 Summary: Frontend-focused role developing and maintaining scalable React applications with TypeScript, integrated with Node.js backend services and data pipelines. The position involves building production-grade, data-driven solutions, contributing to architecture decisions, and optimizing complex UI workflows. It offers work on a high-impact product within a modern TypeScript and React ecosystem. 🗂️ Requirements: Strong proficiency in React, Strong proficiency in TypeScript, Experience building large-scale production applications, Experience with Node.js and API integrations, Experience with data-driven applications, Understanding of modern frontend architecture, Knowledge of testing practices, Ability to work in cross-functional teams 📃 Skills: React, TypeScript, Node.js, APIs, Microservices, Snowflake, Testing, Architecture, Data, Pipelines 🏢 Description: ✅ Your responsibilities: Develop and maintain scalable React applications with TypeScript across the full frontend stack Collaborate closely with backend engineers, data teams, and product managers to deliver high-quality solutions Ensure type safety, code quality, and maintainability throughout the application Participate in design and architecture discussions, proposing improvements to frontend patterns and integrations Troubleshoot and optimize complex UI and data-intensive workflows Support knowledge sharing and mentor junior developers when needed 🧠 Our requirements: Strong proficiency in React and TypeScript , with experience building large-scale, production-grade applications Familiarity with Node.js backend development and integration with APIs or microservices Experience working with data-driven applications , ideally with Snowflake, data lakes, or pipelines Solid understanding of modern frontend architecture, testing, and best practices Ability to communicate effectively in a cross-functional, high-stakes environment Proactive, self-motivated, and capable of delivering high-quality solutions under tight timelines 🌟 What we offer: Opportunity to work on a premium, high-profile product with global business impact Exposure to a modern TypeScript/React ecosystem, integrated with backend Node.js services and advanced data pipelines Collaborative environment with experienced engineers and product leaders Career growth and technical mentorship in a cross-functional team Competitive employment package and benefits.

🏢 Summary: Full Stack Developer role focused on building and evolving a Developer Experience Portal based on Backstage.io using Node.js and React. The position involves developing platform features, self-service automation workflows, reusable templates, and internal APIs while contributing to UX/UI design and engineering standards. The role combines backend, frontend, and platform engineering responsibilities. 🗂️ Requirements: Minimum 5 years of professional experience in full stack development, Strong hands-on experience with Node.js and modern backend development, Advanced knowledge of React and frontend architecture, Practical experience with Backstage.io including plugin development, Experience in UX/UI design with strong usability principles, Familiarity with YAML-based configuration, Understanding of Infrastructure as Code concepts 📃 Skills: Node.js, React, Backstage, YAML, IaC, APIs, UX, UI 🏢 Description: Responsibilities: Develop and enhance the Developer Experience Portal based on Backstage.io using Node.js and React Design and implement intuitive UX/UI solutions for both your own features and broader platform initiatives Build and maintain self-service automation workflows and reusable templates Develop and integrate platform APIs supporting internal engineering processes Contribute to the evolution of the platform tech stack and engineering standards Requirements: Minimum 5 years of professional experience in full stack development Strong hands-on experience with Node.js and modern backend development Advanced knowledge of React and frontend architecture Practical experience with Backstage.io , including plugin development Experience in UX/UI design with a good sense of usability and aesthetics Familiarity with YAML-based configuration and Infrastructure as Code concepts Fluency in English (both written and spoken) Nice to have: Experience with CI/CD pipelines and automation processes Knowledge of Docker and Kubernetes Experience with network segmentation and firewall automation, including Check Point with Ansible, NSX DFW with Terraform, and Google Cloud firewalling Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program

🏢 Summary: Backend-focused role involving development of scalable web applications using Java and React/Next.js. The position includes building and optimizing server-side components, APIs, and databases while ensuring performance and security. Close collaboration with cross-functional teams and end-to-end responsibility for backend quality and scalability are expected. 🗂️ Requirements: Minimum 4 years experience in similar role, Proficiency in Java server-side programming, Strong knowledge of React and Next.js, Experience with React Router and Redux, Experience with MySQL, PostgreSQL or MongoDB, Experience building scalable web applications, Knowledge of web performance and security principles, Experience with Git version control, Ability to conduct testing and debugging, English level B2 or higher 📃 Skills: Java, React, Next.js, Redux, ReactRouter, MySQL, PostgreSQL, MongoDB, SQL, NoSQL, API, REST, Git, AWS, Azure, GCP, Docker, NodeJS, Security, Testing 🏢 Description: Responsibilities: Designing, developing, and maintaining the server-side logic of web applications Implementing scalable and efficient server-side components and APIs Build React/Next.js based applications Working with relational and/or NoSQL databases to store and retrieve data efficiently Designing and optimizing database schemas for performance and scalability Integrating third-party APIs and web services to enhance application functionality Developing custom APIs to facilitate communication between front-end and back-end systems Implementing security best practices to protect against common web application vulnerabilities Conducting regular security audits and implement necessary measures Optimization: optimizing server-side code for maximum speed and scalability Monitoring and troubleshooting performance issues Collaborating with front-end developers, UI/UX designers, and other team members to ensure seamless integration of components Using version control systems (e.g., Git) to manage and track changes to the codebase Conducting thorough testing of server-side components to identify and fix bugs Collaborating with QA engineers for comprehensive testing Clear and comprehensive documentation for back-end systems and APIs Requirements: At least 4 years of experience in a similar position Proficiency in Java server-side programming Thorough understanding of React/Next.js core principles along with React router, hooks, Redux (or the like) workflows, Web performance and security Experience with database systems (e.g., MySQL, PostgreSQL, MongoDB) Proven experience in back-end development and building scalable web applications Strong analytical and problem-solving skills with attention to detail Effective communication skills to collaborate with cross-functional teams Ability to adapt to changing project requirements and technologies English at least B2 Nice to have: Familiarity with cloud platforms (e.g., AWS, Azure, GCP) Previous experience in Front-end development with Docker Experience with NodeJS Offer: Private medical care Co-financing for the sports card Constant support of dedicated consultant Employee referral program

🏢 Summary: Rola dotyczy rozwoju i utrzymania nowoczesnych aplikacji webowych w sektorze bankowym z wykorzystaniem React i architektury opartej o REST API. Obejmuje tworzenie interfejsów użytkownika, integrację z webserwisami oraz dbanie o wydajność i jakość kodu. Praca w zespole projektowym z wykorzystaniem kontroli wersji Git. 🗂️ Requirements: Minimum 5 lat doświadczenia w tworzeniu aplikacji webowych, Bardzo dobra znajomość JavaScript ES6/ES7, Znajomość TypeScript, Doświadczenie z ReactJS, Doświadczenie z Redux, Doświadczenie z Saga, Znajomość HTML5, Znajomość CSS3, Znajomość Bootstrap, Znajomość jQuery, Znajomość Node.js, Znajomość NPM, Znajomość Webpack, Znajomość Gulp lub Grunt, Znajomość SASS lub LESS, Znajomość OOP, Znajomość REST API, Znajomość Git, Znajomość zagadnień wydajności aplikacji, Znajomość języka angielskiego do pracy z dokumentacją techniczną 📃 Skills: JavaScript, ES6, ES7, TypeScript, ReactJS, Redux, Saga, HTML5, CSS3, Bootstrap, jQuery, Node.js, NPM, Webpack, Gulp, Grunt, SASS, LESS, OOP, REST, Git 🏢 Description: Projekt realizowany w sektorze bankowym, obejmujący rozwój i utrzymanie nowoczesnych aplikacji webowych z wykorzystaniem technologii frontendowych oraz architektury opartej o React i REST API. Twój zakres obowiązków Tworzenie i rozwój aplikacji webowych Implementacja interfejsów użytkownika w ReactJS Rozwój aplikacji w JavaScript i TypeScript Integracja aplikacji z webserwisami REST Optymalizacja wydajności aplikacji Dbanie o jakość i bezpieczeństwo kodu Współpraca z zespołem projektowym Praca z systemem kontroli wersji Git Nasze wymagania Minimum 5 lat doświadczenia komercyjnego w tworzeniu aplikacji webowych Bardzo dobra znajomość JavaScript ES6/ES7 Znajomość TypeScript Doświadczenie z ReactJS, Redux i Saga Znajomość HTML5 i CSS3 Znajomość Bootstrap i jQuery Znajomość Node.js i NPM Znajomość Webpack oraz Gulp lub Grunt Znajomość preprocesorów SASS/LESS Znajomość wzorców projektowych OOP Znajomość REST API Znajomość Git Znajomość zagadnień wydajności aplikacji Znajomość języka angielskiego umożliwiająca pracę z dokumentacją techniczną Mile widziane Znajomość OWASP Top 10 Znajomość standardów W3C

🏢 Summary: The offer is for a Full Stack .NET Developer responsible for building scalable backend services and RESTful APIs within domain-driven and event-driven architectures, as well as developing responsive frontend interfaces. The role involves working with microservices or modular monoliths, implementing asynchronous integrations, and ensuring high code quality through testing and CI/CD practices. The position requires close collaboration in an agile environment and contribution to architectural decisions. 🗂️ Requirements: Minimum 3 years of experience in similar role, Very good knowledge of ASP.NET WebAPI (.NET Core), Very good knowledge of React, Very good knowledge of TypeScript, Experience with Unit Testing, Very good knowledge of Git, Very good knowledge of SQL Server or Azure SQL, Experience with EF Core, Experience with CI/CD pipelines, Experience with containerised deployments, Experience with event-driven architecture, Good command of English 📃 Skills: C#, .NET, ASP.NET, WebAPI, React, TypeScript, SQL, SQLServer, AzureSQL, EFCore, Git, CI/CD, Docker, Microservices, REST, UnitTesting 🏢 Description: Responsibilities: Designing and implementing scalable backend services and RESTful APIs within a domain-driven and event-driven architecture context, including both modular monolith and microservices approaches Building and maintaining responsive frontend interfaces, ensuring seamless integration with backend systems Contributing to architectural decisions and participating in collaborative design sessions to align technical solutions with business requirements Writing and maintaining unit, integration, and end-to-end tests. Ensuring code quality through thorough code reviews and adherence to team standards Working with CI/CD pipelines, containerised deployments, and infrastructure as code Implementing asynchronous communication patterns and event-based integrations between services Configuring and utilising monitoring and observability tools for application diagnostics and performance analysis Collaborating within an agile team, working closely with business analysts to refine requirements, and actively participating in sprint ceremonies Requirements: At least 3 years of experience on a similar position Very good knowledge of ASP.NET WebAPI (.NET Core) Very good knowledge of React, TypeScript Very good knowledge or experience in Unit Testing and GIT Very good knowledge of SQL Server/Azure SQL, EF Core Good command of English Offer: Constant support of dedicated consultant Employee referral program

🏢 Summary: The offer is for a Fullstack Developer responsible for building and developing web applications with conversational elements, using Java for backend and React for frontend. The role includes API design, UI design for data, testing, and maintaining production systems in a CI/CD environment. The position involves close collaboration with AI and data teams to integrate APIs and data solutions. 🗂️ Requirements: Proficiency in React, Experience building web applications with conversational elements, Experience developing backend systems in Java, Experience designing and implementing APIs, Basic knowledge of BigQuery, Basic knowledge of SQL, Ability to design data‑driven UI, Experience using Git in team environments, Knowledge of code quality standards and testing practices, Experience working in production environments, Knowledge of CI/CD processes, Knowledge of monitoring and logging, Ability to collaborate with AI and data teams 📃 Skills: Java, React, SQL, BigQuery, Git, CICD, Monitoring, Logging, API, UI, Testing 🏢 Description: Twój zakres obowiązków Projektowanie i rozwój backendu w technologii Java oraz usług API Tworzenie i rozwój frontendu w React Budowa aplikacji webowych z elementami konwersacyjnymi Projektowanie ergonomicznego UI dla danych Współpraca z zespołami AI i data w zakresie integracji API i danych Udział w code review oraz dbanie o jakość kodu Tworzenie testów jednostkowych, integracyjnych i e2e Praca w środowisku CI/CD oraz reagowanie na incydenty Udział w rozwoju i utrzymaniu systemów produkcyjnych Nasze wymagania Znajomość React Doświadczenie w budowie aplikacji webowych z elementami konwersacyjnymi Doświadczenie w budowie backendu w Java oraz projektowaniu API Podstawowa znajomość BigQuery i SQL Umiejętność projektowania UI dla danych Doświadczenie w pracy zespołowej z wykorzystaniem Git Znajomość standardów jakości, testów oraz dokumentacji Doświadczenie w pracy w środowisku produkcyjnym Znajomość CI/CD, monitoringu i logowania Umiejętność współpracy z zespołami AI i data Mile widziane Znajomość rozwiązań semantic layer i governance metryk Doświadczenie w conversational analytics i rozwiązaniach chat with data Znajomość bibliotek UI i data visualization Znajomość GCP (Cloud Run, Pub/Sub) Podstawy konteneryzacji (Docker, Kubernetes) Doświadczenie w środowisku regulowanym (np. bankowość)

🏢 Summary: Offer for a React Developer with at least one year of commercial experience to build modern web applications. The role focuses on developing frontend solutions, building reusable components, and integrating applications with backend services via REST APIs. 🗂️ Requirements: Minimum 1 year commercial experience with React, Very good knowledge of JavaScript (ES6+), Practical experience with HTML5 and CSS3, Knowledge of component-based architecture, Experience with state management in React, Ability to integrate frontend with REST APIs 📃 Skills: React, JavaScript, ES6, HTML5, CSS3, REST, API 🏢 Description: Poszukujemy osoby z zakresu React Developer , która dołączy do zespołu realizującego nowoczesne aplikacje webowe. Szukamy osoby z pierwszym, komercyjnym doświadczeniem, gotowej do dalszego rozwoju w pracy projektowej. Wymagania Minimum 1 rok komercyjnego doświadczenia w tworzeniu aplikacji w React , Bardzo dobra znajomość JavaScript (ES6+) , Praktyczne doświadczenie w pracy z HTML5 i CSS3 , Znajomość zasad budowania komponentów oraz zarządzania stanem aplikacji, Umiejętność pracy z API (REST) i integracji frontend–backend. Mile widziane Znajomość TypeScript , Doświadczenie z bibliotekami do zarządzania stanem (Redux, Zustand), Podstawowa znajomość testów frontendowych, Doświadczenie w pracy w zespołach zwinnych (Scrum / Kanban). Oferujemy Udział w ciekawych projektach dopasowanych do kompetencji, Możliwość dalszego rozwoju w obszarze frontendowym, Wsparcie doświadczonego zespołu developerskiego, Stabilną współpracę i przyjazne środowisko pracy.