Front-End Engineer (React, UX Design)

🏢 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: Development of a new React-based microservice acting as a common UI layer for multiple applications, with responsibility for authentication, authorization, and configurable UI components. The role involves building reusable components, integrating APIs, and following best practices and documentation standards. 🗂️ Requirements: 5+ years of experience with React.js, Strong knowledge of modern JavaScript (ES6+), Proficiency with React Hooks, Experience with Redux or other state management libraries, Experience with Material-UI, Ant Design, or Tailwind CSS, Strong understanding of HTML5, Strong understanding of CSS3, Experience with responsive design, Familiarity with TypeScript, Experience with Webpack, Experience with Babel, Experience with RESTful APIs or GraphQL, Experience with Jest, Experience with React Testing Library 📃 Skills: React, JavaScript, ES6, Redux, Hooks, Material-UI, AntDesign, Tailwind, HTML5, CSS3, TypeScript, Webpack, Babel, REST, GraphQL, Jest, TestingLibrary 🏢 Description: Responsibilities: Design ground up new microservice based on React. This microservice acts as a common UI for various applications. Handle authentication , authorization with help of backend services. Also support design related tasks or work in collaboration with UI designer. Design reusable components and make UI configurable so certain screens are visible and not visible based on cofiguration. Implement clear documentation and employe industry standard best practices. Expectations: At least 5+ years of experience with React.js and having knowledge of modern JavaScript (ES6+) Proficiency in React Hooks, Redux or state management libraries Experience with UI frameworks like Material-UI, Ant Design, or Tailwind CSS Strong understanding of HTML5, CSS3, and responsive design Familiarity with TypeScript and modern development tools (Webpack, Babel) Experience with API integration (RESTful APIs or GraphQL) Knowledge of unit testing frameworks (Jest, React Testing Library)

🏢 Summary: The offer is for a Front End Developer responsible for building and maintaining responsive, full-stack applications with a strong focus on modern frontend architecture. The role involves working closely with designers and backend engineers to deliver scalable, high-performance digital experiences across web, desktop, and mobile platforms. It requires expertise in React, TypeScript, .NET Core, and modern tooling within a collaborative, partially or fully remote B2B environment. 🗂️ Requirements: Experience with React.js 18, Experience with TypeScript, Experience with .NET Core, Experience with RESTful APIs, Experience with MongoDB or CosmosDB, Experience with SQL Server or MySQL, Experience with Git, Experience with CI/CD pipelines, Experience with cloud platforms, Experience with Entity Framework, Experience with Tailwind CSS, Experience with Redux Toolkit, Experience with Vite or Webpack, Experience with micro-frontend architecture, Experience with Storybook, Experience with monorepos (NX, Turborepo or Lerna), Experience with Vitest 📃 Skills: React, TypeScript, .NET, REST, MongoDB, CosmosDB, SQL, MySQL, Git, CI/CD, Cloud, EntityFramework, Tailwind, Redux, Vite, Webpack, Storybook, NX, Turborepo, Lerna, Vitest 🏢 Description: Description The Front End Developer needs to be able to transform and implement engaging user interfaces. You’ll work closely with UI/UX designers and backend engineers to bring high-quality digital experiences to life, creating seamless user experiences. Responsibilities Implement responsive User Interfaces from design prototypes across web, desktop and mobile applications Ensure responsive Build and maintain full-stack applications using modern frameworks Collaborate with designers, developers, and stakeholders Optimize applications for speed, scalability, maintainability and security Maintain frontend codebases using modern JS framework Requirements Experience in React.js 18 with Typescript for building type-safe component-based UIs for enhanced developer experience, type checking and maintainability Experience in latest MS .NET Core Experience with RESTful APIs Experience with document databases, like MongoDB or CosmoDB Experience with relational databases, like SQL server or MySQL Familiarity with Git, CI/CD pipelines, and cloud platforms Experience with Entity Framework Experience with Tailwind CSS: Utility-first CSS framework for rapid and responsive UI styling, enabling consistent and customizable design systems Experience in Redux Toolkit: State management library for predictable and maintainable global state handling, leveraging RTK Query for data fetching and caching Experience in next generation FE tooling and micro-frontend architecture, such as Vite and Webpack and their respective module federation, for fast development, building, and hot module replacement (HMR), optimized for modern JavaScript frameworks, and implementation of modular, independently deployable frontends using microfrontend patterns, enabling team autonomy and scalable development, and dynamic module loading and sharing Experience in Storybook:, for component-driven development and documentation tool for building, testing, and showcasing UI components in isolation, ensuring reusable and well-documented component libraries Experience in mono-repos, such as NX, Turborepo or Lerna, for efficient code sharing, dependency management, and consistent tooling across multiple applications and libraries Experience in Vitest, a fast, Vite-powered unit testing framework for testing React components, hooks, and utilities in a type-safe environment. Includes support for Jest-compatible APIs and mocking Nice to have Prior experience in the EdTech domain (e-learning platforms, digital classrooms, LMS) Knowledge of learning science, instructional design, or accessibility standards (e.g., WCAG) Familiarity with tools like Moodle, Canvas, Zoom SDK, or Google Classroom integration Working conditions Partly / fully remote B2B contract

🏢 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: 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: Frontend Developer role focused on designing, developing, testing, deploying, and maintaining React and TypeScript applications used across multiple European markets. The position involves working with modern frontend technologies, integrating with REST/GraphQL APIs, and supporting production systems. The role requires strong software engineering expertise and collaboration within Agile teams. 🗂️ Requirements: 5+ years of production experience with React, Strong proficiency in TypeScript, Strong understanding of software engineering principles, Experience with testing and design systems, Experience with REST APIs, Experience with GraphQL APIs, Familiarity with PostgreSQL or DynamoDB, Computer Science degree, Experience with AI tooling, Experience working in Agile (SCRUM or Kanban) environments 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, Cypress, Playwright, Node.js, REST, GraphQL, AWS, Terraform, PostgreSQL, DynamoDB, Docker, Kubernetes, Jenkins, CircleCI, GitlabCI, Datadog 🏢 Description: About the role You will need to be an expert in frontend development with a thorough understanding of the technologies involved. Strong frontend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. Technologies we work with: React, TypeScript, JavaScript, HTML, CSS, Cypress, Playwright, Node.js, REST/GraphQL APIs, AWS, Terraform Responsibilities: Designing, writing, testing functionalities for a frontend system written in React & TypeScript Deploying and maintaining frontend / backend applications Maintaining system on production used by consumers from several European countries Debugging issues Participating in sprint planning, daily sprints and meetings with product owners for grooming new features Collaborating with other team members and teams who depend on functionalities that you develop Required qualifications: 5+ years of production software development experience in React Strong understanding of software engineering principles, testing, design systems Solid hands-on experience in TypeScript Know-how of REST/GraphQL APIs Familiarity with DBMS like PostgreSQL, DynamoDB Computer Science degree AI Tooling usage Able to work with Agile methodologies such as SCRUM and/or Kanban Good communication and collaboration skills Self-motivation, proactive attitude Proficiency in English Nice to have: Exposure to backend development (can be in TypeScript) Some experience or interest in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Docker, Kubernetes, Jenkins, Terraform, CircleCI, GitlabCI, Datadog, etc.

🏢 Summary: Senior Frontend Developer role focused on designing, building, testing, deploying, and maintaining a React and TypeScript-based frontend system integrated with backend services and mobile apps. The position involves frontend architecture design, production support, and working within Agile teams to deliver scalable solutions used across multiple countries. 🗂️ Requirements: 5+ years of production experience with React, Strong hands-on experience with TypeScript, Strong understanding of software engineering principles, Experience with testing and design systems, Knowledge of REST APIs, Familiarity with DBMS such as PostgreSQL or DynamoDB, Degree in Computer Science, Experience working with Agile methodologies (SCRUM or Kanban), Experience using AI tooling 📃 Skills: React, TypeScript, JavaScript, HTML, CSS, REST, PostgreSQL, DynamoDB, Testing, DesignSystems, Agile, SCRUM, Kanban, AI 🏢 Description: About the role You will need to be an expert in frontend development with a thorough understanding of the technologies involved. Strong frontend skills where you can demonstrate your ability to apply these technologies, as well as deploy and maintain them will be crucial to success. Technologies we work with: React, TypeScript, JavaScript, HTML, CSS, Cypress, Playwright, Node.js, REST APIs, AWS, Terraform Responsibilities: Designing, writing, testing functionalities for a frontend system written in React & TypeScript Design frontend software architecture with connection to backend services and mobile apps Deploying and maintaining frontend / backend applications Maintaining system on production used by consumers from several European countries Debugging issues Scoping and assessing the complexity of features Participating in sprint planning, daily sprints and meetings with product owners for grooming new features Collaborating with other team members and teams who depend on functionalities that you develop Recruiting and mentoring new team members Required qualifications: 5+ years of production software development experience in React Strong understanding of software engineering principles, testing, design systems Solid hands-on experience in TypeScript Know-how of REST APIs Familiarity with DBMS like PostgreSQL, DynamoDB Computer Science degree AI Tooling usage Able to work with Agile methodologies such as SCRUM and/or Kanban Good communication and collaboration skills Self-motivation, proactive attitude Proficiency in English Nice to have: Exposure to backend development (can be in TypeScript) Some experience or interest in developing Cloud and Infrastructure solutions with AWS and CI/CD processes supported by tools like Docker, Kubernetes, Jenkins, Terraform, CircleCI, GitlabCI, Datadog, etc.

🏢 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: 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: 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