Senior Engineer, Backend/Infra

AgentMail is building an API designed to give inboxes to AI agents and be the sole identity + communication provider. It isn't AI for your email, it's email for your AI. We're looking for a senior backend/infra engineer with strong systems instincts to help build the primitives agents will use to communicate, authenticate, and operate in the real world.

What you'll do:

• Lead and manage a team of 4-6 engineers
• 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
• Touch our core infrastructure that processes hundreds of thousands of emails per day
• Think creatively about being the bridge between cutting edge AI capabilities with email
• Own projects end-to-end from design through production deployment

What we're looking for:

• Solve problems end-to-end across frontend, infrastructure, backend, UX
• High bar for quality
• Clear communicator
• Highly technical

Bonus:

• Cloud infrastructure and distributed systems expertise
• Experience with messaging, email, authentication, or protocol-heavy systems
• Prior AI/LLM product development
• Developer tools experience

Qualifications:

• 3+ years engineering on infrastructure at a tech company
• Architected software used in production by millions of users

Compensation:

• Base: $250k-$400k annually
• Equity: 1.0%-2.0%
• Medical/dental/vision
• Equinox membership
• Free Doordash