Senior Frontend Developer

🏢 Summary: Frontend Developer role focused on building and evolving a large-scale, high-performance administrative web platform using React. The position emphasizes scalable architecture, code quality, automated testing, and integration with backend services. You will contribute to architectural decisions and maintain robust, maintainable frontend solutions in an enterprise environment. 🗂️ Requirements: 5+ years frontend development experience, Strong commercial experience with React, Expert knowledge of modern JavaScript (ES2024+), Advanced TypeScript proficiency, Experience integrating REST APIs, Hands-on experience with Webpack and Babel, Proficient with npm or yarn, Strong Git experience, Experience designing scalable frontend architectures, Experience with automated testing (unit, component, E2E) using Jest, React Testing Library, Cypress 📃 Skills: React, JavaScript, TypeScript, REST, Webpack, Babel, npm, yarn, Git, Jest, Cypress, GraphQL 🏢 Description: We are looking for an experienced Frontend Developer passionate about building scalable, high-performance user interfaces. In this role, you will contribute to the development and evolution of a large-scale administrative web platform, ensuring high code quality, maintainability, and performance. Key Requirements 5+ years of experience in frontend development, preferably in complex or enterprise-scale environments Strong commercial experience with React (state management, hooks, component lifecycle, application architecture) Expert knowledge of modern JavaScript (ES2024+) , including asynchronous programming and modular architecture Solid hands-on experience with TypeScript (advanced typing, generics, large-scale React integration) Experience integrating frontend applications with REST APIs (HTTP methods, authentication, data handling) Practical knowledge of build tools such as Webpack, Babel, npm/yarn Strong experience with Git (branching strategies, code reviews, conflict resolution) Experience designing and implementing scalable and high-performance frontend architectures Ability to write automated tests using Jest, React Testing Library, and Cypress Nice to Have Experience working with GraphQL in React-based applications Understanding and practical use of software design patterns Responsibilities Develop and enhance a complex React-based administrative platform Contribute to frontend architecture decisions and scalability improvements Maintain high standards of code quality (Clean Code, SOLID principles) Write and maintain unit, component, and end-to-end tests Collaborate with cross-functional teams in an agile delivery environment

🏢 Summary: Part-time Front-end Developer role focused on building and maintaining web applications using ReactJS and TypeScript. The position involves developing new features, writing unit tests, conducting code reviews, and preparing technical documentation. Suitable for junior developers or students seeking hands-on experience in modern front-end development. 🗂️ Requirements: Strong knowledge of ReactJS, Strong knowledge of TypeScript, Ability to write unit tests, Very good knowledge of HTML5, Very good knowledge of CSS3, Very good knowledge of JavaScript, Ability to read technical documentation in English, Knowledge of clean code principles, Knowledge of design patterns, Adherence to software development best practices 📃 Skills: ReactJS, TypeScript, JavaScript, Node, HTML5, CSS3, UnitTesting, GitHub, GitLab, Docker, Git 🏢 Description: Who we’re looking for: We’re looking for a Front-end Developer available for at least part-time work to join our team. If you’re just starting your career or are currently a student, this job is for you. Technologies: ReactJS TypeScript JavaScript Node Responsibilities: Creating new and developing existing web applications on the front-end side Developing tests for applications Preparing technical documentation Conducting code reviews Requirements: English proficiency sufficient to read technical documentation Creative, problem-solving mindset Strong knowledge of ReactJS and TypeScript Ability to write unit tests Very good knowledge of the latest HTML5, CSS3, and JavaScript standards Analytical thinking and problem-solving skills Openness to others and ability to work in a team Willingness to learn new technologies Adherence to software development best practices Knowledge and application of clean code principles Knowledge of design patterns Preferred: Experience with a group or commercial front-end application project Personal projects in your portfolio Knowledge of code repository management platforms, such as GitHub or GitLab Knowledge of Docker We offer: Subsidies for gym memberships Company-wide events Opportunities to learn and gain experience The chance to work on interesting and diverse projects The option to work 100% remotely Participation in industry events

🏢 Summary: Frontend Developer role focused on building and evolving an RDK-based TV-box application within a distributed Agile team. The position involves developing and maintaining JavaScript/TypeScript UI features, collaborating with middleware teams, and ensuring high code quality, scalability, and stability. The role also includes troubleshooting production issues and improving test coverage and CI/CD processes. 🗂️ Requirements: Expert knowledge of JavaScript, Strong practical experience with TypeScript, Experience with E2E testing frameworks, Experience with CI/CD pipelines, Experience with version control systems, Experience integrating applications with embedded systems or device-level components, Ability to analyze logs and troubleshoot production issues, Fluent English (B2+/C1) 📃 Skills: JavaScript, TypeScript, Cypress, Playwright, CI/CD, Git, RDK, LightningJS 🏢 Description: We are looking for a Frontend Developer to join our TV-box and Web Team and help build the future of our TV platform. You'll work in a distributed Agile environment, collaborating with cross-functional teams to deliver high-quality, reliable applications. Your responsibilities: Contribute to the development and future evolution of our RDK-based TV-box application Build and maintain features using our JavaScript/TypeScript-based UI framework Collaborate closely with the platform team responsible for middleware development Ensure the long-term sustainability of the application by reducing technical debt, improving test coverage, and maintaining overall application health Deliver stable, scalable, and high-quality code Analyze complex logs and troubleshoot technical issues in production environments Share knowledge and best practices across teams, platforms, and applications Participate in code reviews and contribute to continuous improvement initiatives Collaborate with cross-functional teams following Agile methodologies We are looking for you, if you have: Expert-level knowledge of JavaScript Strong practical experience with TypeScript Experience with E2E testing frameworks such as Cypress, Playwright, or similar tools Experience working with CI/CD pipelines and version control systems Experience developing applications integrated with embedded systems or device-level components Fluent English (minimum B2+/C1) Strong analytical and problem-solving skills Ability to work effectively in a distributed, cross-functional team Nice to have: Experience with Lightning JS Experience working with embedded systems Experience in streaming, video, or media-related projects We offer: Participation in interesting and demanding projects. Flexible working hours. A great, non-corporate atmosphere. Possibility to work remote or hybrid (2 days per week from the office). Opportunities for development and promotion. Attractive package of benefits. We reserve the right to contact the selected candidates.

🏢 Summary: Frontend Developer role focused on building and maintaining modern web applications using Angular within an agile environment. The position emphasizes creating scalable user interfaces, managing frontend tooling, and ensuring application quality through collaboration and code reviews. 🗂️ Requirements: Strong experience with Angular, Very good knowledge of TypeScript, Very good knowledge of JavaScript, Hands-on experience with Webpack, Hands-on experience with Node.js, Experience with npm and dependency management, Familiarity with version control systems, Strong debugging skills, Experience in agile development environments 📃 Skills: Angular, TypeScript, JavaScript, Webpack, Node.js, npm, Git 🏢 Description: We are looking for a Frontend Developer to join a development team responsible for building and maintaining modern web applications. The role focuses on delivering clean, scalable user interfaces and contributing to overall application quality within an agile setup. Responsibilities: Develop and maintain frontend applications using Angular Build user-facing features with TypeScript and JavaScript Configure and work with build tools such as Webpack and Node.js Manage npm packages, dependencies, and versioning Debug, troubleshoot, and resolve frontend issues Collaborate with the team using version control systems and code reviews Participate in agile ceremonies and contribute to continuous improvement Requirements: Strong experience with Angular framework Very good knowledge of TypeScript and JavaScript Hands-on experience with Webpack, Node.js, and frontend build tools Experience with npm packages and dependency management Familiarity with version control systems Strong debugging and problem-solving skills Experience working in agile development environments

🏢 Summary: Opportunity for a Senior Front-End Developer to modernize and scale an existing web interface using React and Next.js. The role focuses on building high-quality, responsive UI components, integrating with backend services, and driving front-end architecture and best practices. You will collaborate with backend and data teams while ensuring performance, scalability, and code quality. 🗂️ Requirements: Minimum 5 years of hands-on experience with React and Next.js, Strong proficiency in JavaScript and TypeScript, Strong knowledge of HTML and CSS, Experience with RESTful APIs integration, Understanding of modern front-end architecture and design patterns, Experience with front-end testing frameworks, Experience with build tools, Ability to troubleshoot and resolve UI and performance issues 📃 Skills: React, Next.js, JavaScript, TypeScript, HTML, CSS, REST, gRPC-Web, CI/CD, Testing 🏢 Description: Senior Front-End Developer (React / Next.js) We are looking for a Front-End Developer to join a technology-focused team working on modern web applications. This role will play a key part in transforming an existing user interface into a modern, scalable front-end built with React and Next.js. You will be responsible for delivering responsive, high-quality user interfaces and contributing to the long-term evolution of the UI platform. The position involves close collaboration with backend and data teams, as well as ownership of front-end standards and best practices within the team. Responsibilities Redesign and modernize an existing web interface using React and Next.js Build reusable, maintainable UI components with TypeScript Act as a front-end subject matter expert, supporting ongoing improvements to usability and performance Integrate front-end applications with backend services via REST APIs (gRPC-Web knowledge is a plus) Identify, troubleshoot, and resolve UI and performance issues Contribute to code reviews, technical discussions, and CI/CD processes Ensure high code quality through testing, documentation, and adherence to best practices Required Skills & Experience Min. 5 years of hands-on experience with React and Next.js Strong proficiency in JavaScript/TypeScript, HTML, and CSS Solid understanding of modern front-end architecture and development patterns Experience working with RESTful APIs Familiarity with front-end testing frameworks and build tools is an advantage Experience in finances/banking - nice to have

🏢 Summary: Senior Frontend Developer role focused on building and enhancing modern React-based applications for the insurance sector within an international agile team. The position involves developing scalable frontend solutions, integrating with REST APIs, ensuring code quality through testing, and mentoring junior developers. The offer targets experienced engineers ready to contribute to large, international projects using modern technologies. 🗂️ Requirements: Minimum 5 years of experience as Frontend Developer, Strong knowledge of React, Strong knowledge of TypeScript, Proficiency in JavaScript ES6+, Knowledge of SCSS, HTML5, CSS3, Experience with UI frameworks, Experience with REST API integration, Experience in unit testing, Knowledge of Git, Basic knowledge of SQL and databases, Experience working in Agile/Scrum 📃 Skills: React, TypeScript, JavaScript, SCSS, HTML5, CSS3, Bootstrap, MaterialUI, REST, Git, SQL, Agile 🏢 Description: Opis stanowiska: Poszukujemy doświadczonego Senior Frontend Developera specjalizującego się w React, który dołączy do zespołu realizującego projekty dla branży ubezpieczeniowej. Osoba na tym stanowisku będzie odpowiedzialna za rozwój nowoczesnych aplikacji frontendowych oraz współpracę z międzynarodowym zespołem w środowisku agile. Zakres obowiązków: Tworzenie i rozwój aplikacji frontendowych w oparciu o React i TypeScript Analiza wymagań biznesowych i ich przekładanie na rozwiązania techniczne Współpraca z zespołem projektowym (developerzy, testerzy, analitycy) Integracja z usługami REST API Pisanie testów jednostkowych i dbanie o jakość kodu Debugowanie oraz optymalizacja istniejących rozwiązań Wsparcie i mentoring dla mniej doświadczonych członków zespołu Wymagania: Minimum 5 lat doświadczenia na stanowisku Frontend Developera – warunek konieczny Bardzo dobra znajomość React oraz TypeScript Dobra znajomość: JavaScript ES6+, SCSS, HTML5, CSS3 Doświadczenie z frameworkami UI (Bootstrap, Material UI lub podobne) Praktyczna znajomość integracji z REST API Doświadczenie w pisaniu testów jednostkowych Znajomość Git Podstawowa znajomość SQL i pracy z bazami danych Doświadczenie w pracy w metodykach Agile/Scrum Bardzo dobra znajomość języka angielskiego (min. B2) Mile widziane: Doświadczenie z architekturą mikroserwisową Znajomość Vue.js Certyfikaty technologiczne (React, Java, Spring, SQL, AWS, Azure) Doświadczenie w projektach międzynarodowych Znajomość języka niemieckiego lub innego języka europejskiego Oferujemy: Pracę przy dużych, międzynarodowych projektach Elastyczny model pracy Konkurencyjne wynagrodzenie Możliwość rozwoju i pracy z nowoczesnymi technologiami

🏢 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: Frontend Developer role focused on building and maintaining scalable, high-quality user interfaces using TypeScript and React. The position involves close collaboration with designers, backend developers, and product stakeholders to deliver performant and maintainable user-facing features. The offer includes hybrid work, professional growth opportunities, and a comprehensive social benefits package. 🗂️ Requirements: Extensive experience building large, scalable frontend applications, Strong proficiency in TypeScript, Strong proficiency in React, Solid understanding of frontend architecture, Knowledge of design patterns, Ability to design complex user interfaces, Experience ensuring code scalability and performance optimization 📃 Skills: TypeScript, React, JavaScript, HTML, CSS 🏢 Description: We are looking for a frontend developer who is passionate about designing and building high-quality, intuitive user interfaces. In this role, you will collaborate closely with engineers, designers, and product stakeholders to deliver user-facing features across a range of products and internal tools. We value developers who actively contribute to shaping solutions - thinking through usability, performance, and long-term maintainability. You should feel comfortable discussing ideas, proposing improvements, and helping refine both technical and product decisions. In our company, frontend developers are expected to combine attention to detail, strong collaboration skills, and a proactive mindset. We value people who take ownership of their work, communicate clearly, and continuously look for ways to improve the user experience and the systems behind it. Key Responsibilities: Develop and maintain high-quality frontend applications using TypeScript and React . Design complex user interfaces. Ensure the application’s code is scalable, consistent, maintainable and optimised for performance. Collaborate closely with UX/UI designers Collaborate closely with backend developers and BA/product managers Take ownership of features and technical decisions, diving into details to ensure high-quality results. Requirements: A proactive problem solver and analytical thinker . Keen attention to detail and willingness to dive deep into technical challenges. Extensive experience in building large, consistent, maintainable and scalable frontend applications. Solid understanding of frontend architecture and design patterns. Strong proficiency in TypeScript and React . Additional information: Working for one of the top gambling companies in the world Opportunity to influence the quality of the products, improve process and implement your ideas Social package, including sport compensation & medical insurance Professional growth Free parking space (hybrid type of work- 3 days from the office, 2 days from home) Sport activities, parties, and team buildings

🏢 Summary: Oferta dotyczy rozwoju nowoczesnych aplikacji frontendowych z naciskiem na responsywność, dostępność oraz wysoką jakość kodu. Rola obejmuje tworzenie interfejsów użytkownika, pracę z frameworkiem Eclipse oraz współpracę w środowisku Agile/Scrum z zespołami Backend i QA. Praca realizowana jest w modelu zdalnym w oparciu o kontrakt B2B. 🗂️ Requirements: Minimum 3–4 lata doświadczenia w frontendzie, Bardzo dobra znajomość HTML, Bardzo dobra znajomość CSS, Bardzo dobra znajomość JavaScript ES6+, Doświadczenie z Eclipse RCP/RAP lub gotowość do nauki, Znajomość UX/UI, Znajomość Responsive Web Design, Znajomość WCAG, Doświadczenie z Git, Znajomość OWASP Top 10, Znajomość Agile/Scrum, Znajomość języka angielskiego, Wykształcenie techniczne mile widziane 📃 Skills: HTML, CSS, JavaScript, ES6, Eclipse, RCP, RAP, UX, UI, RWD, WCAG, Git, OWASP, Agile, Scrum 🏢 Description: Dla naszego Klienta poszukujemy Frontend Developera , który dołączy do zespołu odpowiedzialnego za rozwój nowoczesnych aplikacji frontendowych. To doskonała okazja dla osób, które chcą tworzyć intuicyjne i dostępne interfejsy użytkownika, pracować z nowoczesnymi technologiami oraz mieć realny wpływ na jakość i rozwój tworzonych rozwiązań. Zadania Projektowanie i rozwój nowoczesnych aplikacji frontendowych z naciskiem na responsywność i wysoką jakość kodu. Tworzenie intuicyjnych interfejsów użytkownika zgodnych z dobrymi praktykami UX/UI oraz standardami WCAG . Rozwijanie i utrzymywanie rozwiązań opartych o framework Eclipse . Opracowywanie oraz aktualizacja dokumentacji technicznej i projektowej. Przygotowywanie i rozwijanie testów jednostkowych oraz integracyjnych. Aktywny udział w pracach zespołu prowadzonych zgodnie z metodyką Scrum , w tym w ceremoniach scrumowych. Uczestnictwo w code review oraz dzielenie się wiedzą i dobrymi praktykami z pozostałymi członkami zespołu. Ścisła współpraca z zespołami Backend i QA w celu zapewnienia wysokiej jakości oraz spójności funkcjonalnej aplikacji. Wymagania Minimum 3–4 lata doświadczenia w tworzeniu aplikacji frontendowych. Bardzo dobra znajomość HTML, CSS oraz JavaScript (ES6+) . Doświadczenie w pracy z frameworkiem Eclipse (RCP/RAP) lub gotowość do zdobycia kompetencji w tym obszarze. Dobra znajomość zasad projektowania interfejsów zgodnych z UX/UI , Responsive Web Design (RWD) oraz WCAG . Doświadczenie w pracy z systemami kontroli wersji, takimi jak Git . Znajomość dobrych praktyk związanych z bezpieczeństwem aplikacji, w szczególności OWASP Top 10 . Znajomość metodyk zwinnych, w szczególności Agile/Scrum . Znajomość języka angielskiego na poziomie umożliwiającym swobodną pracę z dokumentacją techniczną. Wykształcenie wyższe techniczne (informatyka, elektronika lub kierunki pokrewne) będzie dodatkowym atutem. Oferujemy Współpracę na podstawie B2B . Pracę w modelu zdalnym . Preferencyjne pakiety Lux Med oraz MultiSport . Udział w ambitnych projektach. Stabilne środowisko pracy. Zainteresowała Cię ta oferta? Prześlij swoje CV i porozmawiajmy o szczegółach. Chętnie opowiemy więcej o projekcie oraz odpowiemy na wszystkie Twoje pytania! :)

🏢 Summary: Senior Frontend Developer role focused on building and maintaining modern web applications using React and Microsoft technologies for international financial sector clients. The position involves end-to-end feature delivery, system architecture decisions, cloud integrations, and CI/CD processes with strong influence on the product’s technical direction. 🗂️ Requirements: 7–8 years of commercial programming experience, Strong knowledge of React, Experience with .NET Core and .NET 9, Experience building web applications with .NET MVC, Practical SQL knowledge, Experience delivering end-to-end solutions, Knowledge of CI/CD processes, Experience with Azure DevOps or similar tools, Knowledge of cloud solutions, Experience with relational SQL databases, Very good English communication skills 📃 Skills: React, NET, NETCore, NET9, MVC, SQL, CI/CD, Azure, AzureDevOps, KendoReact 🏢 Description: Dołącz do zespołu rozwijającego zaawansowaną platformę webową wykorzystywaną przez międzynarodowych klientów z sektora finansowego. Poszukujemy doświadczonego Frontend Developera z ekspozycją na backend w stacku microsoftowym. Developer, którego szukamy będzie miał realny wpływ na rozwój produktu, architekturę rozwiązań oraz kierunek technologiczny projektu. Zakres obowiązków: Rozwój i utrzymanie nowoczesnych aplikacji webowych opartych o React oraz .NET Projektowanie i implementacja nowych funkcjonalności end-to-end Tworzenie wydajnych i skalowalnych rozwiązań frontendowych Współpraca z zespołem programistów, testerów oraz interesariuszami biznesowymi Udział w projektowaniu architektury systemu i podejmowaniu decyzji technologicznych Integracja aplikacji z usługami chmurowymi Udział w procesach CI/CD oraz dbanie o jakość dostarczanego kodu Optymalizacja wydajności oraz rozwój istniejących komponentów systemu Wymagania: Minimum 7–8 lat doświadczenia w programowaniu komercyjnym Bardzo dobra znajomość React i nowoczesnego ekosystemu frontendowego Doświadczenie w pracy z .NET Core oraz .NET 9 Praktyczna znajomość tworzenia aplikacji webowych w oparciu o .NET MVC i SQL Doświadczenie w realizacji rozwiązań end-to-end Znajomość procesów CI/CD Doświadczenie z Azure DevOps lub podobnymi narzędziami Znajomość rozwiązań chmurowych (preferowany Microsoft Azure) Dobra znajomość relacyjnych baz danych SQL Bardzo dobra znajomość języka angielskiego umożliwiająca codzienną współpracę międzynarodową Mile widziane: Doświadczenie z biblioteką Kendo React Znajomość zagadnień DevOps Wykształcenie wyższe informatyczne lub pokrewne Doświadczenie w projektach fintech lub produktach B2B