Senior Software Engineer, Agents

Requirements:

• You have 5+ years of experience shipping production systems.
• You have hands-on experience building with LLMs — not just prompting, but building the systems around them: tool use, structured output, context management, evaluation, orchestration.
• You have strong backend fundamentals. You've built systems that need to be reliable, observable, and secure.
• You are comfortable with ambiguity. This is an early-stage product inside a growth-stage company. The architecture is still being figured out.
• You are self-directed. You figure out what needs to be built, build it, and ship it.
• You collaborate well with others and can communicate effectively in a fully-remote culture.

Nice to Have:

• Experience with OpenAI/Anthropic APIs specifically.
• You've 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.
• You've built Slack integrations or other conversational interfaces.
• Contributions to open-source AI/ML tooling.

What You'll Be Doing:

• Ship your first agent feature and get familiar with the architecture, tool ecosystem, and how Rico talks to RevenueCat's APIs.
• Identify the biggest reliability or performance gap and start fixing it.
• Meet with the team, get set up with repos, dev environment, and debugging tools.
• Familiarize yourself with RevenueCat dashboards, logging, debugging tools, cloud providers, infrastructure management and general architecture.

Perks and Benefits:

• Competitive equity in a fast-growing, Series C startup backed by top-tier investors, including Y Combinator
• 10-year window to exercise vested equity options
• Fully remote and flexible work environment
• 4-5 weeks of suggested time off annually for mental, physical, and emotional recharge
• $2,000 USD for workspace setup and $1,000 USD annual stipend for continuous learning