Senior Backend Engineer, Go

• Own your modules and services from architecture through deployment
• Develop new features, optimize existing systems, and drive scalability
• Work directly with the CTO on priorities and technical direction
• Design and operate data-processing pipelines for millions of product records
• Conduct code reviews and help shape engineering standards
• Take on an Engineering Lead role over time

• 3+ years of Go in production, including concurrency, worker patterns, and service architecture
• PostgreSQL, including schema design and query optimization
• REST API design, including JWT, OAuth, API keys, and middleware
• Web scraping, including TLS fingerprinting, proxy management, and anti-bot strategies
• Git, CI/CD, and multi-repository workflows
• Kafka or event streaming is a plus
• ClickHouse or analytics databases is a plus
• Operations fundamentals, including Grafana, monitoring, and Linux, are a plus
• E-commerce/Amazon FBA domain knowledge is a plus
• Basic knowledge of Next.js/TypeScript is a plus
• Systems thinking with a focus on edge cases, scalability, and maintainability
• Simplify existing code and avoid unnecessary complexity
• Actively use AI tools and continuously improve workflows
• Independently learn new tools, patterns, and domain knowledge

• Brand-new, cozy office in the heart of Sülz, Cologne
• Work directly with the founders—with short communication lines and fast decisions
• Genuine ownership instead of micromanagement
• Opportunity to progress into an Engineering Lead role
• 30 days of vacation
• The latest MacBook Pro and any equipment you need
• €1,200 remote-working budget
• Urban Sports membership
• Co-working space membership
• Team retreats twice a year
• A team that considers AI an integral part of its daily work
• No endless application process; quick feedback and no cover letter required