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Founding Engineer

AgentMail· Engineering
Apply on company site
San Francisco$150k - $250k + equityFull-timePosted 7mo ago

About the role

Founding engineer position focused on building primitives for agent-to-inbox communication, authentication, and real-world operation with strong backend and infrastructure emphasis. Role involves designing APIs, building low-latency systems, owning end-to-end projects, and acting as a technical voice for customers.

Responsibilities

  • Design APIs and abstractions that are intuitive for both humans and AI Agents
  • Build high-performant, low-latency systems with the idea that agents are the end-users in mind
  • Get your hands dirty by touching our core infrastructure that processes hundreds of thousands of emails per day
  • Think creatively about being the bridge between cutting edge AI capabilities with something as primitive as email
  • Own projects end-to-end, from system design to production rollout
  • Write clear, maintainable code and strong technical documentation
  • Be the frontline for feedback from our customers - we’ll trust you to be our spokesperson

Qualifications

  • You want to solve problems end-to-end: every engineer owns a part of the product and needs to make decisions across the frontend, infrastructure, backend, and UX
  • You have a high bar for quality: speed is important but output quality and detail matter
  • You are a clear thinker and communicator: able to explain tradeoffs, problems, and blockers in standups and syncs
  • You are highly technical: preferably experience shipping production software used by real users at a tech company or startup; hustlers are appreciated

Skills

Required:API designDistributed systemsBackend development

Benefits

  • Medical, dental, and vision insurance
  • All employees get Equinox memberships
  • Breakfast, lunch, and dinner (Free Doordash)
Last updated Oct 15, 2026. Interested? Apply on the company site.
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About AgentMail

Email for AI agents

The email inbox API for AI agents. Create inboxes programmatically.

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