Backend 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 a Backend Developer at JTL, you develop and modernize the backend services and business logic that power our software platform. You work with modern .NET technologies and contribute to the ongoing evolution of our products toward modular architectures, modern APIs, and cloud-ready solutions.

For us, software development is about more than just writing code. We value quality, maintainability, collaboration, and continuous learning.

AI-assisted development is part of our daily work. Our developers use tools such as GitHub Copilot, Claude Code, and ChatGPT to support coding, refactoring, debugging, and documentation. We expect you to bring experience with these tools or a willingness to learn and use them effectively.

Your responsibilities

• Development and maintenance of backend services and business logic with C# and .NET
• Contributing to the modernization and continuous improvement of our software platform
• Design, implementation, and maintenance of REST and GraphQL APIs
• Improving existing code, data structures, and technical processes
• Creating automated tests and supporting quality-oriented development practices
• Participating in code reviews and collaborating with other developers
• Close collaboration with product managers, QA engineers, and frontend developers

Your profile

• Experience in software development with C# and .NET
• Good understanding of software design and clean-code principles
• Experience with relational databases, ideally Microsoft SQL Server
• Experience in designing or integrating APIs
• Ability to work effectively within an existing codebase
• Experience with automated tests
• Strong problem-solving and analytical skills
• Experience with AI-assisted development tools or a willingness to use them
• Very good written and spoken German and English skills

Helpful experience

• ASP.NET Core
• Entity Framework
• GraphQL
• Azure
• Docker
• Experience with modularization or modernization projects
• Experience with ERP, e-commerce, or enterprise software

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 and a company pension scheme