Top Front End Developer Jobs in Krakow

As a Senior Frontend Developer, you will work with React and Angular, manage a frontend team, mentor juniors, and design architecture while focusing on testing and quality assurance.

Freelance frontend developer to build web (React) and mobile (Flutter) apps, create and maintain component libraries/design systems, implement AI-ready code architecture and documentation, work within CI/CD workflows, and collaborate remotely with English communication.

Join Primer's Growth team to build self-serve merchant onboarding features. Ship React frontend dashboard work, deploy to production, monitor impact, collaborate with Design, and contribute to Python backend code when needed.

Maintain and enhance a mature financial CRM, advisory support platform, and client portal. Extend and customize features, debug business processes, resolve production issues, and contribute to product evolution while collaborating with a German-speaking team.

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

Own and evolve the marketing website platform: design Sanity content schemas, build Astro components and design-token-driven UI, ensure accessibility (WCAG 2.2 AA), SEO, localization and performance, extend tooling for AI-assisted composition, and ship end-to-end features from schema to production.

Lead frontend development for the Entitlements platform, owning full SDLC. Design scalable, secure systems, mentor engineers, integrate with backend microservices, and advance LLM-based assistants and personalization using OpenAI/ML models.

Design and maintain a modular, high-performance frontend: implement a pixel-perfect design system, optimize rendering and bundle sizes, architect client-side state for real-time data, integrate complex APIs, and ensure global availability and operational readiness for a Web3 consumer platform.

The Senior Frontend Engineer will lead custom Shopify theme development, ensuring high-quality code and guiding team members in project execution.

Hands-on senior frontend engineer responsible for building and owning production-grade React/TypeScript UIs from Figma. Ship responsive, mobile-first features, complex forms, and tests; optimize performance and bundle size; define component patterns and frontend architecture; collaborate with Product, Design, and Backend; mentor juniors and maintain high quality standards in an AI-assisted remote workflow.

Build and maintain high-performance Next.js/React TypeScript applications integrated with Headless WordPress. Develop reusable UI components, optimize frontend performance and SEO, ensure accessibility and responsive design, collaborate with Product/Design/Backend, integrate third-party services, and leverage AI tools to improve productivity.

Seeking a Frontend Developer with 2+ years experience, proficient in React, JavaScript, and Node.js, with strong communication skills.

The Frontend Developer will work on diverse projects using ReactJS and related technologies, contributing to agile development and team collaboration.

Lead front-end engineer on the Mapper Team building scalable data-visualization and real-time multi-user front-end features. Own end-to-end projects, contribute to architecture and processes, mentor peers, participate in hiring, and deliver high-performance, testable, maintainable UI code.

Build and maintain responsive, high-performance user interfaces using React and modern front-end technologies. Translate UI/UX designs into reusable code, integrate with backend APIs, optimize performance and cross-browser compatibility, and contribute to testing, code reviews, and engineering best practices in a product-driven, remote environment.

As a Senior Frontend Engineer, you will design and implement sophisticated user interfaces, collaborate with teams, integrate with APIs, and contribute to workshops, all within an Agile framework.

The role involves developing high-quality Vue.js applications, creating interactions, collaborating with back-end engineers, and writing tests.

Develop and deliver innovative HR Tech SaaS solutions, collaborate with product teams, participate in Agile practices, mentor peers, and ensure high-quality standards.

The Frontend Developer will lead the development of micro-frontend architectures, enhance team productivity with new tools, and ensure high-quality user experiences while collaborating in an agile, cross-functional environment.

Serve as a senior Java full-stack engineer building and maintaining backend services for blockchain applications, integrate APIs with React/Vue frontends, design scalable enterprise blockchain solutions, troubleshoot complex backend issues, and collaborate with cross-functional teams to apply best practices.

The role involves building creative tools for content editing, enhancing features with PixiJS and WebGL, and improving collaboration workflows.

Own and ship frontend features end-to-end with a product mindset: onboarding, activation, dashboards, and billing UI. Build AI-first experiences, instrument features (analytics, events, dashboards), run A/B experiments, collaborate with backend and cross-functional teams, mentor engineers, and maintain clean, well-tested React code.

Lead design and implementation of complex frontend and platform capabilities. Build and maintain shared UI components and design systems, drive modernization and AI-assisted development, improve quality, accessibility, security, and performance, mentor engineers, influence architecture and technical direction, and create internal developer productivity and AI-powered tooling.

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.

The Frontend Developer will create high-quality game front-ends using TypeScript and React, enhancing existing features and ensuring performance while collaborating with the development team.