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Founding Product Engineer

AgentMail· Engineering
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San Francisco, CA$200k - $250k + equityFull-timePosted 1w ago

About the role

Founding Product Engineer role at AgentMail, a YC-funded startup building email infrastructure for AI agents. Founding team member focused on shaping product from customer problem to shipped software, with end-to-end ownership across frontend, APIs, backend, data models, and infra.

Responsibilities

  • Build products end-to-end across frontend, APIs, backend, data models, and infrastructure as needed
  • Talk directly to customers: interview developers, observe usage, review support conversations and data
  • Turn customer problems into products and prioritize what to build based on impact
  • Shape developer experience (onboarding, SDKs, APIs, debugging tools, docs, console)
  • Prototype quickly from customer insights to usable product in days
  • Sweat the details: influence product design and interaction patterns
  • Help define the product engineering culture as an early member of the team

Qualifications

  • 3+ years of experience as a full-stack engineer
  • Strong product sense and attention to UX, API, docs, and messaging quality
  • Ability to turn vague problems into product concepts without detailed specs
  • Excellent communication with customers and ability to extract underlying problems from requests
  • Ability to contextualize technical decisions in terms of customer and business impact
  • Willingness to move quickly, ship imperfectly, learn from usage, and iterate
  • High ownership and initiative to fix missing or broken aspects without prompting

Skills

Required:Full-stack engineeringProduct senseCustomer interviewing / discoveryFrontend developmentBackend developmentPrototype and rapid iteration

Benefits

  • Stock options (0.50% - 0.75% equity)
  • Competitive salary ($200K - $250K)
  • In-person role in San Francisco, CA
  • Founding team with opportunity to shape product and culture
  • YC-backed startup with experienced founders
Last updated Oct 21, 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.

emailAPIAI agents
Company profileWebsite

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