Senior Software Engineer, Agents

Requirements

• You have 8+ years of experience shipping production systems.
• You've built agents that other people actually use and 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 hold a high bar for quality and instinctively know which details matter, but also are discerning enough to cut scope when needed while still delivering value.
• You’re customer-obsessed: you imagine yourself as the developer, product manager, or marketer using the feature or experiencing the issue.
• You’re a builder, not an implementer: scoping, prioritizing, and driving rollout in partnership with our Product team. This isn’t a role where you check off items from a detailed specification.
• You can quickly familiarize yourself with code you didn't write yourself and improve it.
• You’re scrappy and biased toward shipping. You’d rather ship a good version today and iterate than wait to ship a perfect one next quarter.
• You communicate clearly, both in real-time and asynchronously. We’re a fully remote team, and how you write is as important as how you code.
• You’ve shipped meaningful user-facing features to production, monitored their usage and adoption, and improved them over time.
• You write high-quality, well-tested code, debug issues methodically, and help raise the engineering bar through thoughtful feedback and mentorship.
• You act like an founder: you notice problems, propose improvements, and follow through fast.
• You're comfortable with ambiguity. This is an early stage product inside a growth stage company, and the architecture is still being figured out.
• You're self directed. You figure out what needs to be built, build it, and ship it.
• You are curious and stay current on AI tools and practices.
• You have a habit of sharing what you learn with others.

Ideally, you have:

• Familiarity with subscription business models, app stores, or developer tools
• Experience with OpenAI/Anthropic APIs specifically
• Experience with observability frameworks (Langfuse, Langchain, etc.)
• Built Slack integrations
• Contributed to open source AI/ML tooling
• Maintained systems at scale

What we offer:

• 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