Senior Product Engineer

Job Description:

• Own and deliver features end to end — from database schema to polished UI
• Architect scalable solutions for real-time product data and search
• Collaborate with Design and Product to define technical approaches and trade-offs
• Write clean, well-tested code and conduct thorough code reviews
• Mentor junior engineers and help shape a culture of engineering excellence
• Identify and resolve performance bottlenecks across the entire stack
• Participate in on-call rotations and incident response when it matters most

Requirements:

• 5+ years of full-stack web development experience
• TypeScript, React, and Node.js are your everyday tools
• RESTful APIs and PostgreSQL — schema design and query optimization
• You independently drive projects from idea to production
• Strong communication skills — you can explain technical decisions to non-technical audiences
• Nice to have: Next.js App Router, Server Components, and React Server Components
• Experience with e-commerce platforms, Amazon SP-API, or marketplace data
• Experience scaling data pipelines, web scraping, or ETL processes
• Open-source contributions or a strong technical blog/portfolio
• You actively use AI tools and continuously improve your workflows
• You simplify rather than add unnecessary complexity
• You are self-motivated to learn — new tools, new patterns, and new domain knowledge

Benefits:

• Brand-new, cozy office in the heart of Sülz, Cologne
• Work directly with the founders — short communication lines and fast decisions
• Genuine ownership instead of micromanagement
• Direct impact on a product used daily by thousands of sellers
• 30 days of vacation
• Latest MacBook Pro and any equipment you need
• €1,200 remote-work budget
• Urban Sports membership
• Co-working space membership
• Team retreats twice a year
• A team that sees AI as an integral part of daily work