Senior Backend Developer (PHP/Symfony) – AI & E-Commerce

Quick Facts

• Role: Senior Backend Developer (PHP/Symfony) focused on AI and e-commerce

Description

You will develop and evolve the backend of an e-commerce platform for a large customer base, taking ownership of architecture, advanced shop features, and code quality. The role combines software engineering with AI-driven development: you apply AI coding tools in the workflow, evaluate AI application cases, and ensure the resulting solutions are stable and economically valuable. You collaborate with a backend team and the Shop team lead while setting technical standards.

Responsibilities

• Develop and further evolve the backend architecture with PHP 8.x and Symfony; make sound decisions for scalability, maintainability, and performance

• Design and build sophisticated e-commerce features across checkout, pricing logic, catalog, search, and fulfillment

• Maintain high code quality through Clean Code practices, automated tests, code reviews, and CI/CD

• Use AI coding assistants/agents (e.g., Claude Code, Cursor, GitHub Copilot) for development, refactoring, testing, and documentation

• Define standards for AI-assisted development workflows and critically review AI-generated code

• Identify productive AI use cases (e.g., intelligent search, product data enrichment, recommendations, process automation)

• Translate business goals into technical solutions while tracking KPIs such as conversion, cart value, margin, and process costs

• Act as a technical sparring partner and share knowledge with Product Owners, developers, and other stakeholders

Benefits

• Secure job in a rapidly growing e-commerce company

• Attractive compensation including employer support for company pension provision

• 30 days of vacation; flexible working hours with flextime

• Individual training and development opportunities

• Employee discounts on the entire product range

• Modern workplaces and a digital work environment

• Bike leasing

• Regular team events and activities; free drinks, fruit, and snacks