Senior Software Engineer, Agents
$230,000–$230,000 year
RemoteUnited Kingdom or United States
Job Summary
Ship foundational agent infrastructure including orchestration, tool execution, context management, and the trust layer for developer revenue growth. Build and launch new agentic features while fixing reliability gaps and contributing to architectural discussions. Own core systems such as evaluation pipelines or permission frameworks, then mentor other engineers and drive self-sufficient initiatives. Debug complex issues across the agent ecosystem and participate in on-call rotations. This role sits within RevenueCat's AI-native team, which powers subscriptions for over 40% of newly shipped mobile apps.
Required Qualifications
- 5+ years of experience shipping production systems
- hands-on experience building with LLMs — not just prompting, but building the systems around them: tool use, structured output, context management, evaluation, orchestration
- strong backend fundamentals
- systems that need to be reliable, observable, and secure
- comfortable with ambiguity
- self-directed
- collaborate well with others and can communicate effectively in a fully-remote culture
Desired Qualifications
- Experience with OpenAI/Anthropic APIs specifically
- built agents that other people use
- Experience with evaluation and observability frameworks (Langfuse, Langchain, etc)
- Familiarity with subscription business models, app stores, or developer tools
- built Slack integrations or other conversational interfaces
- Contributions to open-source AI/ML tooling
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