Senior Frontend Engineer - Focus SDKs

Contentful GmbH Internet, IT, Telecommunication

Full-time Hybrid Germany, Berlin

Your role in the team

• Develop and maintain SDKs and tools that are both high-performing and enjoyable for developers to use.
• Own the strategic future of the Ninetailed SDKs and its architecture.
• Collaborate closely with API teams to implement efficient protocols to exchange events and render dynamic experiences in the most performant way possible.
• Ensure stability & reliability through a great suite of unit and e2e tests.
• Make the life of your peers and external users joyful by creating strong documentation.
• Manage the release process for public packages using semantic versioning, ensuring smooth transitions and upgrades for developers.
• Optimize for performance by focusing on reducing bundle sizes and improving load times.
• Work with external engineers on different flavors of our SDKs to enable customers to use Ninetailed with mobile platform

Qualifications

• Proficient in using React and some of its higher level frameworks (e.g. Next.js, Remix, Astro etc.) and other similar libraries (e.g. Vue, Angular, Svelte, Nuxt.js) for front-end development.
• Solid background in automated testing, including both unit and e2e tests, using frameworks like Jest & Playwright.
• Familiarity with semantic versioning for managing public package releases.
• Knowledge in mobile development (e.g. React Native) is great to have.
• Great communication skills in English, especially when explaining complex technical concepts.

Experience

• Proven experience building developer-facing tools, libraries, or open-source projects.
• Strong experience with TypeScript, including deep understanding of its type system.
• Hands-on experience with modern bundlers such as Rollup, Vite, etc.
• Experience in optimizing for bundle size and load time.
• Experience with Monorepos for handling multiple packages, ideally nx.dev is a plus.
• Strong collaborative mindset with experience working cross-functionally.

What's in it for You?

• Join an ambitious tech company reshaping the way people build digital experiences
• Full-time employees receive Stock Options for the opportunity to share in the success of our company
• Fertility and family-building benefits, including a lifetime reimbursable wallet to support your growing family.
• We value Work-Life balance and You Time! A generous amount of paid time off, including vacation days,compassion days for loss, education days, and volunteer days
• Use your personal annual education budget to improve your skills and grow in your career
• Enjoy a full range of virtual and in-person events, including workshops, guest speakers, and fun team activities, supporting learning and networking exchange beyond the usual work duties
• An annual wellbeing stipend to care for your physical, financial, or emotional health
• A monthly communication stipend and phone hardware upgrade reimbursement
• New hire office equipment stipend for hybrid or distributed employees. Get the gear you need to work at your best.

Who are we?

Contentful is the essential platform for creating digital experiences for world-renowned brands. Our content infrastructure provides a powerful API that lets you manage, integrate, and deliver content to any device or service. Developers and content creators can work on digital products simultaneously and edit content, so teams can ship faster.

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