Staff Backend DevX Engineer
Location: Prague
Department: Product Engineering
Location Type: HYBRID
Employment Type: FULL_TIME
The opportunity
Why this matters for your career
AI is how we build
- Agent native architecture standards: clear API contracts, semantic naming, and well-defined module boundaries that keep AI effective as systems grow.
- A context infrastructure layer with repo versioned guidance that AI tools automatically load, improving the output of Cursor, Claude Code, and Codex simultaneously.
- AI agent workflows for on-call and incident resolution: triage alerts, pull logs, surface relevant history, and suggest remediation.
- Systematic optimization of AI code review to catch correctness, security, and maintainability issues earlier.
What you will do
- Build and evolve Kotlin services and frameworks that streamline the inner loop (APIs, build/test tooling, automation, paved paths).
- Maintain and improve our internal developer tool written in Golang.
- Accelerate CI/CD: improve caching/parallelism, increase test reliability, and shorten feedback cycles.
- Partner across teams to standardise workflows, enable self-serve integrations, and reduce cross-team friction.
- Instrument and improve: define DX metrics (lead time, build time, flakiness), run experiments, and iterate based on data.
- Improve reliability and safety with sensible defaults—observability, guardrails, and secure-by-default patterns.
- Make our codebase AI-ready: define clear module boundaries, improve API contracts, add semantic context, and build the structured documentation that makes AI agents more effective across every repo.
- Design and implement agent workflows that go beyond chat: multi-step reasoning, tool use, autonomous task execution, and human-gated checkpoints.
- Run experiments, validate with real users, and iterate based on evidence. We measure learning velocity, not just output.
- Collaborate closely with product managers and designers to shape what we build, not just how we build it. We expect a product mindset, not just technical execution.
- Act as a knowledge multiplier, sharing what you learn across and beyond your team to raise the bar for everyone.
About you
- Have 5+ years of professional engineering experience
- Experience with Kotlin/Java in production (JVM performance, testing, dependency management).
- Solid grasp of cloud-native engineering (containers, Kubernetes; AWS/IaC a plus).
- Pragmatic approach to developer platforms, internal tooling, and CI/CD at scale.
- Nice to have: exposure to Go and interest in multi-language ecosystems.
- Previous experience with working on developer or internal tooling.
- Contributing to open source.
- Strong communication skills and collaborative mindset.
- Curiosity, adaptability, and a proactive, startup-friendly attitude.
- Bring product thinking to engineering work. You can articulate why something matters for users, not just how it works technically.
- Embrace AI as a daily tool in your own workflow. You use AI coding assistants, iterate on prompts, and constantly look for ways to move faster.
- Are curious about what agent native architecture looks like: how to structure codebases, APIs, and documentation so AI agents can operate effectively at scale.
Our tech stack
- Python for ML code
- Celery and Kubernetes for pipeline orchestration
- AWS, Docker, Helm, Kafka, Git, and CI/CD for real time services
- LangGraph for agent orchestration, Braintrust for observability and evaluation
- GraphQL, Postgres, Datadog, Sentry, and Looker
- Business tools: Slack, Jira, Google suite, Zoom, Notion
- Full Tech Stack
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