Senior Frontend Engineer (Contractor)

Team: IT

Location: Germany

Commitment: Contract

Workplace Type: remote

Accountabilities

• Design, develop, and deliver responsive, pixel-perfect user interfaces using React, TypeScript, and Material UI.
• Own frontend features from design handoff through implementation, testing, deployment, and continuous improvement.
• Build complex, validated forms and deliver seamless user experiences across desktop, tablet, and mobile devices.
• Develop and maintain automated unit, integration, and end-to-end tests to ensure application reliability.
• Optimize frontend performance, accessibility, responsiveness, and Core Web Vitals.
• Collaborate closely with product managers, designers, and backend engineers to deliver high-quality features.
• Participate in code reviews, mentor other engineers, and contribute to frontend best practices and architecture decisions.
• Utilize AI-assisted development tools responsibly to improve productivity while reviewing and validating generated code.
• Help evolve the frontend technology stack, component library, design system, and TypeScript adoption.

Requirements

• Minimum 5 years of professional experience building production-grade React applications.
• Strong expertise in TypeScript, React, Material UI (v5+), Redux Toolkit, and RTK Query.
• Advanced knowledge of modern CSS, including Flexbox, Grid, responsive design, and mobile-first development principles.
• Experience developing complex forms with React Hook Form.
• Proven experience with frontend testing using Jest, React Testing Library, Cypress, Playwright, or similar frameworks.
• Strong understanding of performance optimization techniques, including lazy loading, code splitting, and application profiling.
• Experience working from Figma designs and delivering pixel-perfect implementations.
• Familiarity with Agile development practices, Git-based workflows, and modern frontend build tools such as Vite or Webpack.
• Comfortable using AI-assisted development tools such as Claude, Claude Code, Cursor, or GitHub Copilot within daily engineering workflows.
• Excellent written English communication skills and the ability to work independently in a remote, asynchronous environment.
• Availability to consistently overlap with U.S. business hours.
• Experience with Firebase, GraphQL, REST APIs, mapping libraries, micro-frontends, or B2B SaaS products is considered an advantage.

Benefits

• Fully remote contractor opportunity based in Europe.
• High level of ownership with end-to-end responsibility for frontend feature development.
• Opportunity to work on a modern SaaS platform serving mission-critical business operations.
• Collaborative environment with close interaction across engineering, product, and design teams.
• AI-first engineering culture leveraging cutting-edge development tools.
• Opportunity to influence frontend architecture, engineering standards, and design systems.
• Flexible remote work within a distributed international team.
• Exposure to challenging technical projects with opportunities for continuous professional growth.