Senior Frontend Developer (React/TypeScript)

Ihre Aufgaben

Join us in transforming how Testo’s smart measuring instruments connect and interact with our digital ecosystem. Our goal: to build intuitive, high-performance and accessible software that integrates seamlessly with our devices and empowers users to work smarter.

As a key member of our platform team, you’ll take ownership of the Testo Account – the central identity system for all digital Testo applications. This is a high-impact role where you’ll collaborate with experienced architects, product owners, and developers to deliver secure, scalable and elegant solutions. You can choose to work from our offices in Titisee-Neustadt, Berlin, or fully remote.

Your Role in Our Team

• Drive the development and evolution of modern web applications using TypeScript, ReactJS and the latest technologies.
• Transform design concepts into polished, performant and accessible user interfaces in collaboration with UX/UI experts.
• Take full ownership of frontend components in a cross-functional, Agile team.
• Write high-quality, testable, scalable and maintainable code that follows industry best practices.
• Lead by example in code reviews and help uphold our high engineering standards.
• Play an active role in Agile ceremonies such as sprint planning, stand-ups, and retrospectives.
• Live a DevOps culture: "You build it, you run it" — from development through to deployment and monitoring.
• Mentor junior developers and foster a culture of continuous learning and growth.
• Continuously refine our tooling and processes to boost team productivity and code quality.
• Contribute to architectural decisions and ensure the scalability of our frontend systems.

Unsere Benefits

• Flexibel arbeiten: Bei uns können Sie Ihre Arbeitszeiten flexibel gestalten und (teilweise) remote arbeiten.
• Gehalt und Benefits: Wir bieten ein faires und leistungsgerechtes Gehalt. Außerdem erwarten Sie umfangreiche Benefits wie bspw. Hansefit und JobRad.
• Karriereentwicklung: Bei uns stehen gezielte Weiterbildungsangebote und vielfältige, auch internationale Karrieremöglichkeiten auf dem Programm. Ihre berufliche Entwicklung ist uns wichtig.
• Moderne Technologien und digitale Kommunikation: Modernste Technik und digitale Medien sind für uns selbstverständlich und ermöglichen eine effiziente Kommunikation untereinander.
• Sicherer Arbeitsplatz: Es erwartet Sie ein unbefristeter Arbeitsvertrag in einem krisensicheren, jahrzehntelang erfolgreichen Unternehmen.
• Team: Freundliche, immer hilfsbereite Menschen, auf die man sich jeden Morgen freuen kann – mehr als nur Kolleginnen und Kollegen.

Unsere Benefits

Ihr Profil

• Strong teamwork and collaboration skills, including experience with Pair Programming and working effectively in Agile, cross-functional teams.
• 5+ years of hands-on frontend experience with a strong emphasis on React.
• Advanced proficiency in JavaScript, HTML, CSS and TypeScript.
• Deep understanding of React’s core concepts and advanced state management techniques (e.g., Redux).
• Practical experience with ESLint, Jest/Vitest and RESTful API integrations.
• Awareness of modern frontend trends, tooling and performance optimization techniques.
• Experience with frontend testing frameworks and CI/CD pipelines.
• Exposure to micro frontends or modular frontend architectures is a plus.
• A sharp eye for detail, excellent problem-solving ability, and a passion for clean, maintainable code.
• Fluent English skills; German skills are a plus.