Top Front End Developer Jobs in Warsaw

Develop responsive front-end applications for business-critical payment services using React and modern JavaScript. Collaborate with Agile teams, integrate applications with AWS-hosted APIs and services, write maintainable and testable code, resolve technical issues, optimize performance, and improve usability, accessibility, and quality.

Build and own consumer- and merchant-facing payment experiences for a fintech platform. Responsibilities include designing microfrontend architecture, optimizing frontend performance and Core Web Vitals, integrating GraphQL and REST APIs, implementing real-time experiences, developing secure payment interfaces, testing with automated end-to-end frameworks, and improving developer tooling. The role also involves participating throughout the development lifecycle, contributing to scalable architecture, mentoring others, and influencing engineering standards.

Lead front-end development for partner-facing financial web products, including embeddable onboarding modules, partner dashboards, and self-service workflows. Build complex multi-step forms and data-heavy interfaces with React and TypeScript, contribute to Node.js server layers, collaborate on API contracts, and work closely with product, design, and backend teams. Own features from design handoff through production release while maintaining multiple codebases and upgrading business-account APIs.

Develop scalable, testable frontend code for customer-facing web and mobile applications. Participate in the full software development lifecycle, collaborate with product and engineering teams, integrate external APIs and analytics, and improve SEO and PageSpeed performance. The role requires strong React, TypeScript, Next.js, HTML, CSS, UI/UX, and cross-browser development expertise, with a willingness to contribute across backend and infrastructure.

Build and polish complex interactive video-editing features for Studio, including transitions, color grading, element libraries, presets, and customizable keyboard shortcuts. Own frontend-leaning full-stack work from proposal through launch, collaborate in a fast-moving startup environment, and contribute to product decisions and marketing efforts. Deep backend expertise is not required.

Owns growth engineering initiatives across acquisition and conversion journeys, including landing pages, signup, checkout, subscriptions, and product launches. Builds fast, accessible front-end experiences using TypeScript, React, and Next.js, while contributing to Kotlin or Python backend services. Partners with marketing, CRM, product, design, and analytics teams; runs A/B tests; measures conversion outcomes; contributes to the design system; and ships continuously with monitoring and testing.

Design, build, and maintain consumer-facing features across web (React) and mobile (React Native). Own product lifecycle from discovery through release, monitoring, experimentation, and iteration. Drive A/B testing and feature-flag strategies, make architectural decisions, ensure accessibility/performance/testability, mentor engineers, and collaborate with Product, Design, Data, and Platform teams.

Design, develop, and maintain web and mobile applications for Alpaca’s trading API customers. Build responsive, performant, accessible user interfaces and deliver high-visibility features from design through deployment. Collaborate with cross-functional teams, contribute to frontend and backend systems, influence technical strategy, and mentor peers. Work includes trading dashboards, product features, and end-to-end user experiences across frontend and backend platforms.

Lead technical strategy for scalable CMS applications, optimize frontend infrastructure, oversee code quality, and enhance team productivity in a gaming-focused environment.

Develop and maintain Keet Desktop, a cross-platform peer-to-peer communications application built with React and the Pear runtime. Responsibilities include implementing UI/UX, optimizing performance, writing maintainable and tested code, debugging complex frontend applications, and contributing to decentralized communication technology. The role involves collaboration within a remote global team and may include desktop application, real-time communication, and open-source development.

Develop and maintain Keet Desktop, a cross-platform peer-to-peer communications application built with React and the Pear runtime. Responsibilities include implementing UI/UX, optimizing performance, writing maintainable and tested code, debugging complex frontend applications, and contributing to decentralized communication technologies in a globally distributed remote team.

Maintain and improve the company website by developing frontend features, implementing design enhancements, ensuring responsive and accessible experiences, optimizing performance and SEO, fixing bugs, and maintaining scalable code. The role collaborates with design, marketing, and backend teams while independently owning website reliability, speed, security, and user experience.

Define frontend technical direction for a fintech platform area across architecture, design systems, micro-frontends, state management, performance, rendering, and accessibility. Author ADRs and RFCs, evaluate technology trade-offs, evolve an AI-native engineering harness, and drive adoption of frontend standards across teams. Provide product strategy input and mentor Staff-track engineers. The role requires extensive frontend, fintech, cross-team architecture, technical leadership, and technical writing experience.

Own the frontend architecture and delivery of production Next.js applications for enterprise AI products. Build real-time LLM interfaces, semantic search experiences, knowledge graphs, and agentic builders while managing complex state and high-load performance. Maintain component libraries and design systems, ensure accessibility, localization, security, and cross-browser quality, and monitor production performance. Provide technical mentorship, code reviews, and clear product and architecture decisions.

Leads and mentors a frontend engineering team while remaining hands-on with coding, architecture, code reviews, and technical delivery. Owns migration to Nuxt.js and server-side rendering, performance engineering, Core Web Vitals, and technical SEO. Manages team performance, career development, and work allocation while collaborating with product, backend, and cross-functional stakeholders to deliver scalable, high-quality software.

Develop frontend interfaces and A/B experiments for a health-focused AI product using Vue 3, TypeScript, and Vite. Improve design systems and AI-assisted development workflows, own features from concept through production, collaborate across engineering, design, product, and analytics, and optimize performance, reliability, and development velocity using user data and experimentation results.

Develop and maintain responsive frontend applications using TypeScript, integrate APIs and services, implement UI/UX designs, optimize performance and scalability, apply frontend security and data protection practices, troubleshoot issues, participate in code reviews, and contribute to open-source privacy-focused projects.

Develops and maintains React-based web applications using JavaScript and TypeScript. Responsibilities include building features, optimizing performance and scalability, troubleshooting incidents, creating automated tests, integrating RESTful APIs, participating in code reviews, and collaborating with UX, QA, clients, and customer success teams. The role also involves applying DevOps practices and working with cloud technologies, distributed applications, databases, and messaging systems.

Build reliable, responsive React and Next.js interfaces from designs and API contracts. Implement reusable, accessible components, integrate REST APIs, manage application state, write unit and component tests, debug browser issues, optimize performance, and contribute to collaborative Git-based development workflows. The role requires independent delivery, defensive API handling, secure client-side practices, and maintainable front-end code.

Owns technical direction for complex frontend features using React and Next.js. Designs scalable architectures, reusable component libraries, state-management patterns, API integrations, graphics-heavy interfaces, mapping features, and performance optimizations. Leads testing, CI/CD, security, documentation, code reviews, mentoring, estimation, and technical discovery while ensuring accessibility, browser compatibility, and clean host-application integration.

Build and own complex, high-performance frontend experiences for observability products using Angular or another major frontend framework. Lead frontend architecture, translate complex data into intuitive interfaces, collaborate cross-functionally, write tested production code, review code, mentor engineers, and drive features from concept through production.

Develop and maintain full-stack software features for Cisco Webex, with emphasis on Angular frontend components and Java, Node.js, and Python microservices. Participate in design, code reviews, testing, performance optimization, observability, and cross-functional collaboration with product, SRE, and DevOps teams. The role contributes to scalable, reliable partner-network solutions while using AI-assisted development tools and supporting continuous learning.

Build responsive, performant, accessible web applications; make frontend architecture decisions; write unit and integration tests; maintain frontend-backend API contracts; improve engineering processes and tools; and collaborate cross-functionally. The role requires strong JavaScript and frontend expertise, including TypeScript, React, Next.js, HTML5, CSS3, testing libraries, RESTful APIs, Figma, usability, and user experience.

Build and improve high-quality web products and reusable design-system components. Own frontend performance, including data loading, caching, server rendering, and streaming. Apply strong product judgment to complex UX problems and collaborate with designers, engineers, and product leaders. Work autonomously across products, establish frontend quality standards, and help elevate team practices through technical leadership and craftsmanship.

Develop and maintain React.js user interfaces, reusable components, and front-end libraries. Optimize application performance across browsers and devices, translate designs into code, collaborate with product and backend teams, write tests, debug production issues, and maintain modern React development practices and tools.