Senior Frontend Engineer (f/m/d)

Your mission

JTL is one of the leading providers of e-commerce software in the German-speaking region – with around 450 employees across the group and more than 50,000 customers from a wide range of industries. We develop scalable, flexible solutions for the online retail of the future – from ERP systems to shop and marketplace integrations.

As our product ecosystem continues to grow, we are investing in the foundations that enable frontend teams to develop faster, more consistently, and at scale. For this reason, our Platform Architecture & Developer Productivity team is looking for a Senior Frontend Developer who will play a key role in sustainably strengthening frontend development at JTL.

In this role, you support other frontend teams by defining standards and best practices, providing templates, and developing central libraries that make everyday development more productive.

In addition, you advise our frontend developers, support the adoption of our guidelines, and help ensure a consistent, efficient, and modern frontend landscape at JTL.

Your responsibilities

• You develop standards, guidelines, and best practices for frontend development at JTL
• You create and maintain templates, boilerplates, and libraries that help other teams work more productively and efficiently
• You support frontend teams in adopting and using these guidelines, templates, and tools
• You ensure a performant and scalable development environment with modern toolchains (Vite, Turborepo, pnpm)
• You regularly evaluate new technologies (e.g. TanStack Router, Jotai, TanStack Query) and assess their value for our frontend landscape
• You support the setup of new frontend projects and ensure that our standards, best practices, and efficient toolchains are applied from the start

Your profile

• 5+ years of professional experience in frontend development
• Solid expertise in React, TypeScript, and modern build tools (Vite, Turborepo)
• Experience with design systems and component-based development (Storybook, TailwindCSS)
• Hands-on experience with modern state management libraries (Jotai)
• Good understanding of API integration and data fetching with TanStack Query
• Experience with routing solutions such as TanStack Router
• Familiarity with testing frameworks (Jest, Playwright)
• Confident use of Git and collaborative workflows (pull requests, code reviews)
• Knowledge of performance optimization and accessibility of web applications
• Excellent communication skills in German and English

Nice to Have

• Experience with CI/CD pipelines and automation, particularly GitHub Actions
• Basic knowledge of cloud-native technologies and deployment platforms, including Kubernetes and Helm

Why us?

• Remote-first within Germany, with the option to work remotely from eligible countries for up to 180 days per year
• Meal allowance of up to €115 net per month
• Subsidy for an ergonomic home-office workspace
• Regular team events, company-wide gatherings, and summer and Christmas parties to stay connected as a remote-first company
• EGYM Wellpass and JobRad subsidy
• Additional financial benefits including capital-forming benefits (vermögenswirksame Leistungen) and a company pension scheme