Frontend Engineer React / Next.js

You are interested in the position as Frontend Engineer React / Next.js at Pets Deli Tonius GmbH?
On the job platform Instaffo, you can apply for this and other jobs with ease. Create your profile in under 3 minutes and start the application process with just a few clicks.
Please note that the position is only available to applicants from Germany.
The language requirements for this position are: English - Fluent.

Want to build something meaningful with your code?

Join us! At Pets Deli we create digital experiences that make life easier for both pets and their humans. Our engineering team is responsible for everything our customers see and use online and for the internal tools that keep those experiences running smoothly. As our next Frontend Engineer you’ll work with a modern stack (TypeScript, React, Next.js, Tailwind CSS, Vitest) and enjoy real product ownership

Activities

• Ship new customer-facing features, focusing on performance, accessibility and clean UX
• Work across the full lifecycle: idea → technical design → implementation → deployment → monitoring
• Own technical decisions. Help shape our component architecture, testing strategy and tooling
• Write maintainable, well-tested code and build reusable UI components.
• Collaborate daily with product managers, designers and backend engineers, integrating RESTful APIs and content from Contentful CMS.

Requirements

• 3+ years of professional experience building React/Next.js applications (SSR, ISR, middleware), ideally in an e-commerce or D2C environment.
• Strong TypeScript skills and a good grasp of modern state management (Zustand)
• Hands-on experience with Tailwind CSS or a utility-first CSS approach
• Familiarity with headless CMSs such as Contentful (or similar)
• Collaborative mindset, product-thinking, and eagerness to take ownership
• Proven focus on performance: you measure, profile, and optimise rendering to deliver fast, smooth user experiences
• Code accountability: you own what you ship through review, deployment, monitoring, and continuous improvement
• Confidence writing unit tests and caring about CI/CD quality gates
• Fluency in English (German a plus). We’re an international, pet-friendly team
• Please note that a valid work permit for Germany is a prerequisite for employment in this role.
• Please note that a valid work permit for Germany is a prerequisite for employment in this role.
• While we offer flexibility in terms of work location, the ability to attend in-person meetings in Berlin when needed is required.

Nice to have:

• Experience with payments (PayPal, Apple Pay), analytics (Google Tag Manager) or A/B testing (Ninetailed)
• Knowledge of AWS.
• Experience with React Native
• E-commerce or D2C background

Team

You’ll join our cross-functional product team at Pets Deli, working closely with frontend and backend developers, designers, and product managers. Our frontend team is passionate about creating high-quality, user-friendly digital experiences for pet lovers across Europe. We collaborate in an open, respectful environment where code quality, ownership, and continuous learning are highly valued. As we grow, you’ll play a key role in shaping both the product and the frontend culture.

Application Process

Our process is straightforward and respectful of your time. After reviewing your application, we’ll reach out for a short video call to get to know each other and understand your experience better. If there’s a good mutual fit, we’ll invite you to a second interview focused on technical skills and collaboration. We aim to move quickly and provide feedback at every step.

About the Company

Our Culture

Our vision "A better world for pet lovers" requires great ideas, pure passion and the best minds in their field. Pets Deli stands for excellence not only in its product and customer experience, but also in its corporate culture. For us, culture is one of the main components of a thriving company. We support each other, value every opinion and stand for diversity, inclusion and equality. You are now invited to take a look behind the scenes and get to know us a little better. It would be a pleasure to start off the recruitment process with you soon.