Senior Backend Engineer, AI Platform (Toqan)
Summary
Senior backend engineer on Toqan, Prosus's internal AI platform in Amsterdam, building secure Go-based agent runtimes and distributed systems that power agentic AI products across the group. Day to day: orchestrating models and tools, hardening production reliability, and improving testing, deployment, and observability.
Prosus is seeking a Senior Backend Engineer for its internal AI platform, Toqan, in Amsterdam. The role involves building secure, configurable agent runtimes and distributed systems that power agentic AI products across the group. Requires strong Go, AWS, and LLM integration experience.
Technical (Must-have)
- Go
- AWS
- LLMs
- AI models
- tool-calling systems
- agentic architectures
- MCP
- A2A
- CI/CD
- automated testing
- production observability
- AI coding tools
- Claude Code
- Cursor
- GitHub Copilot
Soft Skills
- systems thinking
- low ego
- autonomy
- accountability
- curiosity
- collaboration
- adaptability
Technical (Nice-to-have)
- agentic AI systems
- event-sourced systems
- Python
- AI infrastructure
- ML infrastructure
- developer productivity tooling
Key Responsibilities
- Design a new capability for the agent runtime
- Improve how models and tools are orchestrated
- Investigate production reliability issues
- Take an integration from early prototype to a secure, observable service
- Build in Go
- Review code and make architectural decisions with the team
- Work closely with product, platform and AI colleagues to shape requirements, test ideas and ship them safely
- Improve testing, deployment and observability foundations
Go, AWS, LLMs, AI models, tool-calling systems, agentic architectures, MCP, A2A, CI/CD, automated testing, production observability, AI coding tools, Claude Code, Cursor, GitHub Copilot