Top Front End Developer Jobs in Warsaw

Build and ship full-stack features for North, develop autonomous agents that access sensitive enterprise data, productionize state-of-the-art models, write minimal, secure low-resource code, and collaborate with researchers to deploy performant RAG/agentic applications while prioritizing security and user experience.

Own and deliver core frontend features end-to-end, collaborate on architecture, build responsive user interfaces from scratch, mentor other developers, and ensure performant state management and build tooling for large-scale SaaS B2C products.

Design, build, and optimize responsive, accessible frontend applications using modern JavaScript frameworks. Integrate with REST/GraphQL backends, implement data visualizations, write automated tests, participate in Agile processes, and mentor junior developers.

Build and optimize user-facing features and reusable React components, translate UI/UX into code, collaborate on tests with QA, document technical decisions, and demo products to stakeholders.

Design and implement high-performance, data-rich frontend features using React and TypeScript. Co-own frontend architecture, component design, and state management. Collaborate with product, design, and backend teams to improve data visualization and user diagnostics. Ship production code quickly, leverage AI tools to accelerate development, and mentor engineers while promoting frontend best practices and testing.

Develop and maintain frontend components across multiple open-source ecosystem projects. Perform code reviews, collaborate with design and product teams, improve frontend architecture, address user issues, and prepare tasks for community contributors.

Frontend-focused product engineer building high-quality SaaS user experiences. Work in cross-functional squads to own UI, interaction patterns, performance, accessibility, prototyping, instrumentation, and feature rollouts. Primary frontend work with openness to backend or mobile tasks, using AI-assisted coding and agile practices.

Design and implement complex customer-facing frontend features using TypeScript and React. Provide technical leadership, mentor junior engineers, drive frontend architecture and best practices, improve performance and accessibility, partner with product/design, integrate with backend APIs, and manage technical debt and scalability.

Build and maintain user-facing features and interfaces for Restream web services. Design and implement UI and business logic, collaborate with product designers and engineers, perform code reviews, improve reliability and scalability, and evaluate emerging technologies.

Own frontend implementation for enterprise Magento/Adobe Commerce storefronts using Hyva and modern frontend technologies. Build responsive, pixel-perfect UIs from Figma, optimize performance and accessibility, integrate with REST/GraphQL, and collaborate with backend engineers and designers from estimation through deployment.

Lead development of Magento 2 storefronts (custom themes, Hyva, headless/PWA), drive frontend architecture and best practices, optimize performance and accessibility, integrate with REST/GraphQL APIs, mentor engineers, and collaborate with backend, DevOps, and design teams.

Design, implement, and maintain frontend applications and internal tools. Own delivery of high-visibility features, collaborate with cross-functional teams, mentor peers, and ensure performant, accessible, polished user interfaces integrated with backend systems.

Design, implement, and maintain frontend and mobile applications for Trading API customers. Own high-visibility features end-to-end, ensure performance, responsiveness, accessibility, and mentor peers while collaborating with cross-functional teams.

Freelance Senior Frontend Developer to build and maintain Angular applications using TypeScript and RxJS. Implement microfrontends and Astro, configure Webpack, integrate OAuth/OIDC, and optimize performance. Collaborate remotely with CI/CD, code review practices, and cross-functional teams. EU-based, full-time engagement for a minimum six-month project starting mid-July 2026.

Full-Stack Engineer responsible for developing and maintaining front-end and back-end components, collaborating on product solutions, and improving user interfaces.

Lead frontend application development, collaborate with product managers and designers, ensure quality testing, and monitor feature performance.

Design and build platform features with a focus on high-performance components, working in a cross-functional team to meet timelines and quality standards.

The Frontend Engineer will design and maintain frontend applications, collaborate with teams, implement TDD, and ensure application performance.

The Senior Frontend Engineer will manage the frontend codebase, enhance CI/CD pipelines, maintain shared libraries, and improve platform observability while collaborating with product teams to drive performance and reliability.

The Senior Frontend React Developer will create robust UIs for AI-powered applications, ensuring performance and reliability while handling complex data and real-time interactions. Responsibilities include architecting Next.js applications, managing state, and integrating with backend services to enhance user experiences.

Lead front-end BI strategy, develop advanced Power BI solutions, manage data models and security, integrate AI features, and collaborate with stakeholders.

Develop and maintain user-friendly interfaces using React and TypeScript, implement state management, collaborate on API integration, and optimize performance.

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

Develop modern mobile applications using React Native and TypeScript, optimize performance, conduct testing, and collaborate within Agile teams.

Responsible for developing and customizing frontend components in Magento 2, integrating with backend systems, ensuring accessibility, collaborating on technical solutions, and optimizing frontend performance.