4 hours ago
Hamburg, Germany +2 moreSenior
Responsibilities
- Build and maintain the Kotlin Agent SDK as an internal product and shape its runtime and client-facing contracts.
- Design and ship the agent identity layer and authentication plumbing so agents can act with real user identities.
- Integrate telemetry, error reporting, inference, and anonymization into the SDK by default.
- Create the SDK test kit, architecture tests, and evaluation workflow for running agents against the ML team’s evaluation harness before model changes ship.
- Own Koog version upgrades, format compatibility, and shared limits for tool output and token usage.
- Gather requirements from consuming engineering squads and communicate technical reasoning clearly.
Requirements
- Several years of production backend development experience in Kotlin.
- Experience building an SDK or internal platform consumed by other engineers, including managing published contracts and versioning.
- Experience setting up testing and observability tooling for a codebase.
- Familiarity with AI agent systems, orchestration, and evaluation through professional or personal projects.
- Clear English communication and ability to collaborate across engineering teams.
Benefits
- Remote work across Germany or work from the Berlin office with a flexible hybrid setup.
- Flexible working hours.
- Stock options.
- 30 vacation days plus a day off for your birthday.
- Germany Transport Ticket and Urban Sports Club access.
- Regular company off-sites and team events.
- Access to Blinkist, Audible, and other learning platforms, plus free language courses.
