Senior Frontend Engineer

We're partnering with a pioneering digital energy provider that’s revolutionising the energy landscape for a new generation. This innovative company delivers sustainable energy solutions to private households and businesses, offering individualised tariffs alongside lifestyle products through a leading-edge digital platform.

The Role

• Develop and maintain crucial customer journeys, including login, account management, billing, payments, and self-service features.
• Build with Next.js/React and TypeScript using a component-oriented approach.
• Design seamless web experiences for both desktop and mobile devices.
• Integrate frontend applications with API-driven backends (GraphQL/REST).
• Collaborate closely with UX/UI design, backend, QA, and platform teams in agile/scrum environments.
• Contribute to frontend standards, testing strategies, and CI/CD quality processes.

What You'll Need

• Proven experience in developing production-ready frontend applications with React/Next.js and TypeScript.
• Strong foundational knowledge in frontend development: component architecture, performance optimisation, accessibility, and modern CSS.
• Demonstrated AI-Native developer mindset, proficient in agent-driven workflows with tools like Claude Code, Cursor (Composer), or Windsurf (Cascade).
• Experience with API-first platforms and authentication flows.
• Pragmatic approach to testing and confident work within CI/CD driven teams.
• Strong communication skills in both German and English, coupled with a distinct ownership mindset.

What's On Offer

• A highly motivated team with flat hierarchies and direct communication channels.
• A workplace in the heart of Cologne with hybrid work options.
• Performance-based compensation and 30 days of annual leave.
• Subsidies for public transport tickets and free parking.

Apply via Haystack today!