Senior React Developer

🏢 Summary: Senior React Developer role focused on building and maintaining modern, scalable web applications in a large international banking environment. The position involves developing high-quality, responsive frontend solutions, ensuring code quality, and supporting production systems within an Agile team. Long-term B2B contract with hybrid work model in Kraków. 🗂️ Requirements: Proven experience delivering web applications, Strong experience building rich frontend/UI layers, Excellent knowledge of React.js, Excellent knowledge of JavaScript, Excellent knowledge of TypeScript, Strong knowledge of HTML5, Strong knowledge of CSS3, Experience with CSS preprocessors (SASS or Less), Experience with Jest, Experience with React Testing Library, Experience creating pixel-perfect UI from detailed specifications, Experience designing responsive interfaces for desktop and mobile, Understanding of accessibility standards, Understanding of cross-browser compatibility, Knowledge of JSON, Knowledge of XML 📃 Skills: React, JavaScript, TypeScript, HTML5, CSS3, SASS, Less, Jest, ReactTestingLibrary, JSON, XML 🏢 Description: Location: Kraków, Poland Work model: Hybrid, 6 days per month in the Kraków office Recruitment process: Test + 1-hour live coding interview in React Contract : B2B, long-term About the role We are looking for a Senior React Developer to join the Business Services Digital team . The team delivers IT solutions and support for Business Services within a large-scale, international banking environment. This is a great opportunity for an experienced frontend engineer who enjoys building high-quality digital products, working in Agile teams, and contributing to modern, scalable web applications in a complex enterprise setting. Your responsibilities Design, develop, test, and implement modern web-based applications Build rich, responsive, and pixel-perfect user interfaces using React Maintain a delivery-oriented approach across application development and supporting software/data infrastructure Manage software releases and support existing systems in production Ensure code quality, maintainability, and full test coverage Contribute to and promote frontend best practices and engineering standards Mentor other team members through knowledge sharing and technical guidance Deliver solutions on time and within budget Follow internal development methodologies, security standards, and documentation requirements Drive productivity and quality improvement initiatives Coordinate releases through to Production Required experience Proven track record in delivering web applications Strong experience building rich frontend/UI layers Excellent knowledge of React.js Excellent knowledge of JavaScript and TypeScript Strong knowledge of HTML5 , CSS3 , and CSS preprocessors such as SASS or Less Experience with frontend testing frameworks such as Jest and React Testing Library Experience creating pixel-perfect UI based on detailed specifications Experience designing responsive interfaces for desktop and mobile applications Good understanding of accessibility and cross-browser compatibility Good knowledge of data marshalling/de-marshalling using JSON and XML Nice to have Experience working with Git Familiarity with IntelliJ and VS Code Good understanding of responsive web techniques Knowledge of Node.js / Express Experience designing digital products in the onboarding or banking domain What makes this opportunity interesting Work on impactful digital solutions in a global banking environment Join a mature engineering team focused on quality, delivery, and best practices Contribute to modern frontend development using React and TypeScript Competitive B2B rate

🏢 Summary: Senior Fullstack Developer role focused on building new backend and frontend features for a large corporate investment platform within a digital innovation center. The position combines hands-on development with architectural input, code reviews, and active participation in Agile processes. The work emphasizes creating new solutions using modern Java and Angular technologies. 🗂️ Requirements: Minimum 5 years commercial experience in fullstack development, Proficiency in Java 8/17, Strong knowledge of Spring Framework, Experience with Java design patterns, Knowledge of JDBC, collections, memory management, Experience with Angular 14+, Strong TypeScript skills, Experience with RxJS and reactive programming, Hands-on experience with RDBMS, Strong SQL knowledge, Understanding of Git, Experience with npm, Knowledge of Web APIs, Familiarity with OpenAPI (Swagger), Experience working in Scrum environment 📃 Skills: Java, Spring, Angular, TypeScript, RxJS, JDBC, SQL, RDBMS, Git, npm, WebAPI, OpenAPI, Swagger, Scrum, Collections, MemoryManagement 🏢 Description: Get on board with B3 Consulting Poland – a Polish outsourcing company with Scandinavian roots. We value energy, logic, experience and freedom , all embedded in a truly Scandinavian work culture. At B3, our CARE philosophy is more than a slogan. It’s how we think and work every day – we care about people, tailor solutions to real needs, and take responsibility for what we build. We’re not just a workplace. We’re a community of passionate people who enjoy working together and learning from each other 🙌 We are currently looking for a Senior Fullstack Developer to help us build and grow a digital innovation center in Poland. You will join a team developing a corporate investment application where 90% of your work will focus on creating brand-new solutions . 🚀 Your mission on board: Development: You will be responsible for designing and implementing new backend and frontend features for large corporate investment platform. Architectural Influence: Beyond coding, you will actively participate in technical analysis and high-level discussions to shape the future of our systems. Quality & Collaboration: You will perform thorough code reviews and participate in Scrum events, ensuring the team delivers stable and scalable software. Proactive Innovation: We look for developers who take ownership, bring their own ideas to the table, and show initiative in improving our engineering standards. 🚀 What you’ll need to come on board: Senior Expertise: Minimum 5 years of commercial experience in fullstack development. Solid Backend Stack: Proficiency in Java 8 / 17 , the Spring Framework , and Java design patterns. You should have strong knowledge of JDBC, collections, and memory management. Modern Frontend Stack: Extensive experience with Angular 14+ , TypeScript, and reactive programming ( RxJS ). Database Mastery: Strong hands-on experience with RDBMS and SQL . Engineering Excellence: Good understanding of Git, npm, Web APIs, and OpenAPI (Swagger). Communication & Mindset: English at a minimum B2 level and a proactive attitude towards working in an Agile/Scrum environment. 🎁 What we offer Health & sports benefits tailored to your needs Free running and swimming trainings Internal triathlon team and joint competitions (Warsaw-based) Tailor-made development paths to deepen your expertise Cyclical initiatives that allow you to grow in other IT areas , not only your current stack Hybrid work - 1-2/week

🏢 Summary: Senior React Developer role focused on building and maintaining modern, scalable web applications in a large international banking environment. The position involves designing rich, responsive user interfaces, ensuring high code quality, and supporting production releases within Agile teams. It is a long-term B2B contract with hybrid work from Kraków. 🗂️ Requirements: Proven experience delivering web applications, Strong experience building rich frontend/UI layers, Excellent knowledge of React.js, Excellent knowledge of JavaScript and TypeScript, Strong knowledge of HTML5 and CSS3, Experience with CSS preprocessors, Experience with frontend testing frameworks, Ability to create pixel-perfect UI from specifications, Experience designing responsive interfaces, Understanding of accessibility and cross-browser compatibility, Knowledge of JSON and XML data handling 📃 Skills: React, JavaScript, TypeScript, HTML5, CSS3, SASS, Less, Jest, ReactTestingLibrary, JSON, XML, Git, Node.js, Express 🏢 Description: 🌍Work mode: hybrid from Kraków - 6x per month in the office. ⏰Start: ASAP/30 days. 📝Contract: B2B. ⚙️Recruitment process: ·       I stage: 1h live coding React . ·       II stage: test online. ⏳Duration: >12 months contracts. 📕Project language: English. 💼Industry: Banking. 💻Workload: Full time. About the role We are looking for a Senior React Developer to join the Business Services Digital team . The team delivers IT solutions and support for Business Services within a large-scale, international banking environment. This is a great opportunity for an experienced frontend engineer who enjoys building high-quality digital products, working in Agile teams, and contributing to modern, scalable web applications in a complex enterprise setting. Your responsibilities Design, develop, test, and implement modern web-based applications Build rich, responsive, and pixel-perfect user interfaces using React Maintain a delivery-oriented approach across application development and supporting software/data infrastructure Manage software releases and support existing systems in production Ensure code quality, maintainability, and full test coverage Contribute to and promote frontend best practices and engineering standards Mentor other team members through knowledge sharing and technical guidance Deliver solutions on time and within budget Follow internal development methodologies, security standards, and documentation requirements Drive productivity and quality improvement initiatives Coordinate releases through to Production Required experience Proven track record in delivering web applications Strong experience building rich frontend/UI layers Excellent knowledge of React.js Excellent knowledge of JavaScript and TypeScript Strong knowledge of HTML5 , CSS3 , and CSS preprocessors such as SASS or Less Experience with frontend testing frameworks such as Jest and React Testing Library Experience creating pixel-perfect UI based on detailed specifications Experience designing responsive interfaces for desktop and mobile applications Good understanding of accessibility and cross-browser compatibility Good knowledge of data marshalling/de-marshalling using JSON and XML Nice to have Experience working with Git Familiarity with IntelliJ and VS Code Good understanding of responsive web techniques Knowledge of Node.js / Express Experience designing digital products in the onboarding or banking domain What makes this opportunity interesting Work on impactful digital solutions in a global banking environment Join a mature engineering team focused on quality, delivery, and best practices Contribute to modern frontend development using React and TypeScript Competitive B2B rate

🏢 Summary: Fullstack Developer role focused on building and enhancing backend and frontend features within a digital platform, contributing to both new and existing applications. The position involves working in a Scrum team, participating in code reviews, and developing solutions using Angular and Java technologies. 🗂️ Requirements: Very good knowledge of JavaScript and TypeScript, Strong experience with Angular 14+ (SPA), Understanding of RxJS and reactive programming, Experience with Web APIs and OpenAPI (Swagger), Solid experience with Java 8 or 17, Good knowledge of Spring Framework, Understanding of Java design patterns, Experience with RDBMS and SQL, Knowledge of JDBC, collections, serialization, memory management, Good understanding of Git and npm, Experience working in Agile/Scrum, English level B2 minimum 📃 Skills: JavaScript, TypeScript, HTML, CSS, Angular, RxJS, Java, Spring, SQL, RDBMS, JDBC, Git, npm, Swagger, OpenAPI 🏢 Description: Get on board with B3 Consulting Poland – a Polish outsourcing company with Scandinavian roots. We value energy, logic, experience and freedom , all embedded in a truly Scandinavian work culture. At B3, our CARE philosophy is more than a slogan. It’s how we think and work every day – we care about people, tailor solutions to real needs, and take responsibility for what we build. We’re not just a workplace. We’re a community of passionate people who enjoy working together and learning from each other 🙌 Right now, we’re looking for a Fullstack Developer to help us build and grow a digital innovation center in Poland . 🚀What you’ll need to come on board Frontend Very good knowledge of JavaScript / TypeScript, HTML, CSS Strong experience with Angular 14+ (SPA) Understanding of reactive programming (RxJS) Experience with Web APIs & OpenAPI (Swagger) Backend Solid experience with Java 8 / 17 Good knowledge of Spring Framework Understanding of Java design patterns Experience with RDBMS and SQL Knowledge of JDBC, collections, serialization, memory management General Good understanding of Git, npm Experience working in Agile / Scrum Willingness to perform and participate in code reviews Proactive mindset and ownership attitude Min. English B2 One of the stages of the recruitment process is a technical assessment that evaluates knowledge of Java and Angular and takes about one hour to complete. This allows the final interview to focus on a discussion about the specific tasks and challenges involved in the project. 🚀 Your mission at B3 Develop backend and frontend features for multiple applications within the Digital Platform Work on both new solutions and existing systems Participate in code reviews and technical discussions Take part in Scrum events Collaborate closely with your team and communicate openly Bring ideas, improvements and initiative💡 🎁 What we offer Health & sports benefits tailored to your needs Free running and swimming trainings Internal triathlon team and joint competitions (Warsaw-based) Tailor-made development paths to deepen your expertise Cyclical initiatives that allow you to grow in other IT areas , not only your current stack Apply today 🚀

🏢 Summary: Fullstack Developer role focused on building and enhancing backend and frontend features for multiple applications within a Digital Platform. The position involves working with Angular and Java/Spring in an Agile environment, contributing to both new solutions and existing systems. The role includes active participation in code reviews and technical discussions. 🗂️ Requirements: Very good knowledge of JavaScript and TypeScript, Strong experience with Angular 14+, Experience with HTML and CSS, Understanding of RxJS and reactive programming, Experience with Web APIs and OpenAPI, Solid experience with Java 8 or 17, Good knowledge of Spring Framework, Experience with RDBMS and SQL, Knowledge of JDBC, Understanding of Git and npm, Experience working in Agile/Scrum, Minimum English level B2 📃 Skills: JavaScript, TypeScript, HTML, CSS, Angular, RxJS, Java, Spring, SQL, JDBC, RDBMS, Git, npm, OpenAPI, Swagger, Agile, Scrum 🏢 Description: Get on board with B3 Consulting Poland – a Polish outsourcing company with Scandinavian roots. We value energy, logic, experience and freedom , all embedded in a truly Scandinavian work culture. At B3, our CARE philosophy is more than a slogan. It’s how we think and work every day – we care about people, tailor solutions to real needs, and take responsibility for what we build. We’re not just a workplace. We’re a community of passionate people who enjoy working together and learning from each other 🙌 Right now, we’re looking for a Fullstack Developer to help us build and grow a digital innovation center in Poland . 🚀What you’ll need to come on board Frontend Very good knowledge of JavaScript / TypeScript, HTML, CSS Strong experience with Angular 14+ (SPA) Understanding of reactive programming (RxJS) Experience with Web APIs & OpenAPI (Swagger) Backend Solid experience with Java 8 / 17 Good knowledge of Spring Framework Understanding of Java design patterns Experience with RDBMS and SQL Knowledge of JDBC, collections, serialization, memory management General Good understanding of Git, npm Experience working in Agile / Scrum Willingness to perform and participate in code reviews Proactive mindset and ownership attitude Min. English B2 One of the stages of the recruitment process is a technical assessment that evaluates knowledge of Java and Angular and takes about one hour to complete. This allows the final interview to focus on a discussion about the specific tasks and challenges involved in the project. 🚀 Your mission at B3 Develop backend and frontend features for multiple applications within the Digital Platform Work on both new solutions and existing systems Participate in code reviews and technical discussions Take part in Scrum events Collaborate closely with your team and communicate openly Bring ideas, improvements and initiative💡 🎁 What we offer Health & sports benefits tailored to your needs Free running and swimming trainings Internal triathlon team and joint competitions (Warsaw-based) Tailor-made development paths to deepen your expertise Cyclical initiatives that allow you to grow in other IT areas , not only your current stack Apply today 🚀

🏢 Summary: Senior JavaScript React Developer role focused on building and maintaining high-performance frontend solutions for large-scale, multi-country eCommerce platforms. The position involves developing modern applications with React.js and Next.js, contributing to a multisite Drupal transition, and driving best practices across the full development lifecycle. The role requires close collaboration with cross-functional and international teams in a hybrid work setup. 🗂️ Requirements: Strong experience with React.js and Next.js (SSG/SSR, i18n, performance optimization), Proficiency in JavaScript and TypeScript, Strong knowledge of HTML5, CSS/SCSS, Tailwind, Experience with REST and GraphQL APIs, Experience with Git and CI/CD pipelines, Knowledge of Docker and Kubernetes, Experience with cloud platforms (AWS or Azure or GCP), Understanding of headless or decoupled architecture, Experience with performance optimization and scalable frontend architecture, Knowledge of WCAG accessibility standards, Experience working in Agile/Scrum environment, English level B2 or higher 📃 Skills: React, Next.js, JavaScript, TypeScript, HTML5, SCSS, Tailwind, REST, GraphQL, Git, Jira, Figma, Confluence, Docker, Kubernetes, GitLab, AWS, Azure, GCP, Drupal, jQuery, CI/CD, WCAG, Scrum, AJAX 🏢 Description: In Cyclad we work with top international IT companies in order to boost their potential in delivering outstanding, cutting-edge technologies that shape the world of the future. For our client, we are looking for a Senior JavaScript React Developer to join our client's Website & eCommerce team. In this role, you will be responsible for building and maintaining modern, high-performance frontend solutions using React.js and Next.js. You will collaborate closely with designers, backend developers, and international stakeholders while driving best practices across the development lifecycle. You will play a key role in the evolution of large-scale, multi-country digital platforms and contribute to the transition toward a new multisite Drupal platform planned for 2026. Project information: Location: Warsaw, Poland Work Setup: Hybrid work (2 - 3 days/ week in the office) Rate: 125 PLN/net/h + VAT (B2B contract) Language: English (B2+ Required) Start date: depending on candidate availability Project scope: Develop and maintain frontend components using React.js and Next.js (SSG/SSR, i18n, performance optimization) Build and support custom CMS modules, plugins, and integrations Contribute to all phases of the software development lifecycle: design, development, testing, deployment, and maintenance Drive and promote best practices, including test-driven development, CI/CD, SCRUM, refactoring, and code standards Collaborate closely with UX/UI designers and frontend/backend developers to deliver intuitive and visually appealing user experiences Ensure website content is easily editable by non-technical users Optimize applications for performance, scalability, and accessibility (WCAG) Work with distributed international teams and key stakeholders Stay up to date with emerging frontend technologies and industry trends Requirements: Technical Skills: Frontend: Strong skills in React.js and Next.js (SSG/SSR, i18n, performance optimization). Languages: JavaScript/TypeScript, HTML5, SCSS/Tailwind. APIs: REST, GraphQL. Tooling: Jira, Git, Figma, Confluence. Architecture (Preferred): Headless, Decoupled, Micro Frontends, Component-based design. Cloud & DevOps: Docker, Kubernetes, GitLab CI/CD, AWS/Azure/GCP. Competences: Strong front-end skills: HTML, CSS, JavaScript, jQuery, plus modern frameworks (React, Next.js). Understanding of the entire web development process (design, development, deployment). Good understanding of asynchronous request handling, partial page updates, and AJAX. Proficient in cross-browser compatibility and scalable application design principles. Experience with data migration, transformation, and scripting. Familiarity with Agile and Scrum methodologies. Prior experience with digital accessibility (WCAG) We offer: Full-time job agreement based on B2B Private medical care with dental care (covering 70% of costs) + rehabilitation package. Family package option possible Multisport card (also for an accompanying person) Life insurance

🏢 Summary: Senior Frontend React Developer role focused on building and optimizing advanced UI applications with generative AI features in an enterprise environment. The position involves collaborating with cross-functional teams to deliver high-quality, user-centric solutions and integrating CI/CD and AI operational workflows. Hybrid work model based in Warsaw. 🗂️ Requirements: 4+ years of experience in React development, 4+ years of experience in JavaScript development, Strong knowledge of DevOps practices, Hands-on experience with Jira, Hands-on experience with GitLab, Hands-on experience with OpenShift, Proficiency in Linux, Experience with unit testing, Experience with system testing, Fluent Polish, Fluent English, Legal right to work in Europe 📃 Skills: React, JavaScript, DevOps, Jira, GitLab, OpenShift, Linux, CI/CD, Agile, Scrum, AI, Testing 🏢 Description: Empower innovation at the forefront of UI and AI technology — craft impactful user experiences that shape the future! Warszawa-based opportunity with hybrid work model (up to 2 remote days per week). As a Senior Frontend React Developer , you will be working for our client, a leader in enterprise software solutions, focusing on delivering cutting-edge UI and generative AI services. Join a collaborative, agile team committed to creating high-quality, user-centric applications that drive digital transformation and innovation. Your main responsibilities: Develop and optimize complex frontend applications using React and JavaScript, ensuring seamless user experiences Collaborate with cross-functional teams including data scientists and DevOps to deliver innovative UI solutions, including generative AI features Confirm technical designs, troubleshoot issues, and implement best practices for code quality and performance Contribute to the integration of CI/CD pipelines and operational workflows involving AI services Participate actively in Agile/Scrum ceremonies, promoting effective teamwork and continuous improvement You're ideal for this role if you have: 4+ years of proven experience in React and JavaScript development Strong understanding of DevOps practices with hands-on experience using Jira, GitLab, and OpenShift Proficiency in Linux OS and performing unit and system testing Excellent command of English, both written and spoken Ability to independently deliver high-quality code and confirm technical designs It is a strong plus if you have: (optional) Experience working with financial data, including Market Data and Reference Data Full-stack development expertise Knowledge of CI/CD pipelines and generative AI operational workflows Language Required for the role: Fluent in Polish and English Eligibility for the role: Only candidates with an existing legal right to work in Europe will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Long-term contract for a Senior Frontend React Developer to build and maintain web applications for international clients within a leading consulting environment. The role focuses on developing React.js solutions in monolithic and microfrontend architectures, improving legacy code, and delivering pixel-perfect, responsive UI. Work is conducted in Agile teams with a hybrid model in Kraków. 🗂️ Requirements: Minimum 3 years commercial experience as Developer/Software Engineer, Strong experience with React.js, Strong knowledge of JavaScript and TypeScript, Strong knowledge of HTML5 and CSS3, Experience with CSS preprocessors (SASS, Less), Experience with Jest and Testing Library React, Experience building responsive web applications (Desktop, Mobile), Knowledge of accessibility standards, Knowledge of cross-browser compatibility, Experience with JSON and XML data handling, Experience working in Scrum/Agile, English level B2/C1, Availability to work hybrid in Kraków (6 days/month) 📃 Skills: React, JavaScript, TypeScript, HTML5, CSS3, SASS, Less, Jest, TestingLibrary, JSON, XML, Scrum, Agile 🏢 Description: Be in IT to firma rekrutacyjna, wyspecjalizowana w poszukiwaniu Specjalistów z branży technologii informatycznych. Obecnie, dla naszego klienta, poszukujemy osoby na stanowisko: Senior Frontend React Developer . Zakres obowiązków: Długofalowa współpraca z międzynarodową, topową firmą consultingową, świadczącą usługi IT dla dużych i średnich firm z różnorodnych sektorów. Rozwój kodu React.js w architekturze monolitycznej oraz w oparciu o microfrontends. Debugowanie istniejącego kodu oraz nawigacja w legacy codebases. Pisanie unit testów z wykorzystaniem Jest i Testing Library React. Uczestnictwo w ceremoniach Scrum/Agile. Konsultowanie i proponowanie rozwiązań technicznych. Tworzenie pixel perfect UI zgodnie z dostarczonymi specyfikacjami. Projektowanie responsywnych interfejsów GUI na Desktop i Mobile. Oczekujemy: Minimum 3 lat doświadczenia komercyjnego jako Developer / Software Engineer, w tym w CSS, JavaScript i React.js. Doskonałej znajomości HTML5, CSS3 oraz pre-procesorów CSS (SASS, Less i pokrewnych). Doskonałej znajomości React.JS. Doskonałej znajomości JavaScript i TypeScript. Doświadczenia w pracy z frameworkami do testowania frontendu: Jest i Testing Library React. Doświadczenia w tworzeniu responsywnych aplikacji webowych na Desktop i Mobile. Dobrej znajomości standardów dostępności (accessibility) oraz cross-browser compatibility. Dobrej znajomości marshallingu/de-marshallingu danych w formatach JSON i XML. Mile widziane: doświadczenie z GCP, znajomość Docker, znajomość JIRA/Confluence. Gotowości do pracy w modelu hybrydowym: wymagana obecność w biurze klienta w Krakowie – 6 dni w miesiącu. Znajomości języka angielskiego na poziomie B2 lub C1 – umożliwiającej swobodną komunikację w międzynarodowym środowisku. Mile widziana dostępność ASAP; akceptowalny jest maksymalnie miesięczny okres wypowiedzenia ze skutkiem na koniec miesiąca. Oferujemy: Długofalowa współpraca z wynagrodzeniem w przedziale 120-140 PLN netto/godz. + VAT. Wsparcie przy zakładaniu i prowadzeniu działalności gospodarczej, dla osób bez takiego doświadczenia. Sprawny proces rekrutacyjny - dwie rozmowy techniczne z managerami, online (każda maksymalnie po godzinie). Benefity - prywatna opieka medyczna, karta Multisport. Nowoczesny sprzęt zapewniany przez firmę, wraz z softem i konfiguracją.

🏢 Summary: Senior React Developer role focused on building and optimizing modern web applications using React, Angular, and TypeScript in a hybrid Warsaw-based environment. The position involves collaborating with cross-functional teams, implementing testing best practices, and working with micro front-end architectures and reactive programming. Candidates will contribute to scalable, high-performance digital products while leveraging modern front-end tools and frameworks. 🗂️ Requirements: 5+ years of front-end web development experience, Strong knowledge of React, Strong knowledge of TypeScript, Experience with Jest, Cypress, or Playwright, Experience building responsive web applications, Knowledge of micro front-end architectures, Experience with RxJS, Experience in agile SDLC environments, Ability to manage multiple projects, Legal right to work in the European Union 📃 Skills: React, Angular, TypeScript, Jest, Cypress, Playwright, RxJS, Webpack, Vite, Vitest, SSR, CSS-in-JS 🏢 Description: Unleash the Future of Web Applications — Drive Innovation with Cutting-Edge Front-End Technologies! Warsaw-based opportunity with hybrid work model (4 days per week in the office) As a Senior React Developer , you will be working for our client, a leader in web application innovation within the technology industry. You’ll contribute to building and executing challenging projects across a variety of initiatives, collaborating closely with stakeholders, UX designers, and development teams to transform requirements into high-impact deliverables. This role offers a unique chance to learn new technologies and continually elevate your skills while shaping the future of digital experiences. Your main responsibilities: Develop and maintain modern, dynamic web applications using React, Angular, and TypeScript. Collaborate with cross-functional teams to translate user requirements into clean, scalable code. Implement best practices in testing using Jest, Cypress, or Playwright to ensure quality and performance. Integrate micro front-end architectures and reactive programming techniques such as RxJS. Optimize applications for maximum speed, scalability, and responsiveness. Contribute to code reviews, documentation, and continuous improvement processes. Leverage modern build tools like Webpack and Vite to streamline development workflows. Stay updated on industry trends and introduce innovative solutions to technical challenges. You're ideal for this role if you have: 5+ years of hands-on experience in front-end web development. Strong expertise in React, TypeScript, and testing frameworks like Jest, Cypress, or Playwright. Proven ability to deliver rich, responsive web applications with clean code. Familiarity with micro front-end architectures and reactive programming, particularly RxJS. Experience working in agile SDLC environments, including research, design, and engineering phases. Excellent communication skills and ability to manage multiple projects simultaneously. Self-motivated, innovative mindset with strong organizational skills. It is a strong plus if you have: Bachelor's degree in Computer Science or related field. Experience with SSR, CSS-in-JS, Vite, Vitest, and Webpack. Knowledge of micro front-end development and advanced build pipelines. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.

🏢 Summary: Senior React Developer role focused on building and optimizing modern, high-performance web applications using cutting-edge front-end technologies in a hybrid Warsaw-based setup. The position involves delivering scalable solutions, implementing testing best practices, and integrating micro front-end architectures. You will collaborate with cross-functional teams to create responsive, high-quality digital products. 🗂️ Requirements: 5+ years of front-end web development experience, Strong expertise in React and TypeScript, Experience with testing frameworks: Jest, Cypress, or Playwright, Experience building responsive, scalable web applications, Knowledge of micro front-end architectures, Experience with reactive programming and RxJS, Experience with modern build tools, Experience working in Agile SDLC environments, Legal right to work in the European Union 📃 Skills: React, Angular, TypeScript, JavaScript, Jest, Cypress, Playwright, RxJS, Webpack, Vite, Vitest, SSR, CSS-in-JS, Microfrontends, HTML, CSS 🏢 Description: Unleash the Future of Web Applications — Drive Innovation with Cutting-Edge Front-End Technologies! Warsaw-based opportunity with hybrid work model (4 days per week in the office) As a Senior React Developer , you will be working for our client, a leader in web application innovation within the technology industry. You’ll contribute to building and executing challenging projects across a variety of initiatives, collaborating closely with stakeholders, UX designers, and development teams to transform requirements into high-impact deliverables. This role offers a unique chance to learn new technologies and continually elevate your skills while shaping the future of digital experiences. Your main responsibilities: Develop and maintain modern, dynamic web applications using React, Angular, and TypeScript. Collaborate with cross-functional teams to translate user requirements into clean, scalable code. Implement best practices in testing using Jest, Cypress, or Playwright to ensure quality and performance. Integrate micro front-end architectures and reactive programming techniques such as RxJS. Optimize applications for maximum speed, scalability, and responsiveness. Contribute to code reviews, documentation, and continuous improvement processes. Leverage modern build tools like Webpack and Vite to streamline development workflows. Stay updated on industry trends and introduce innovative solutions to technical challenges. You're ideal for this role if you have: 5+ years of hands-on experience in front-end web development. Strong expertise in React, TypeScript, and testing frameworks like Jest, Cypress, or Playwright. Proven ability to deliver rich, responsive web applications with clean code. Familiarity with micro front-end architectures and reactive programming, particularly RxJS. Experience working in agile SDLC environments, including research, design, and engineering phases. Excellent communication skills and ability to manage multiple projects simultaneously. Self-motivated, innovative mindset with strong organizational skills. It is a strong plus if you have: Bachelor's degree in Computer Science or related field. Experience with SSR, CSS-in-JS, Vite, Vitest, and Webpack. Knowledge of micro front-end development and advanced build pipelines. Eligibility for the role: Only candidates with an existing legal right to work in the European Union will be considered for this role. #MAKEYourCareerBETTER Interested? Apply now and include your CV (preferably in English) along with a statement confirming your consent to the processing and storage of your personal data.