Senior Engineer, Backend/Infra

AgentMail, Inc

$250K — $400K *
Information Technology
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • 3+ years of experience as an engineer in infrastructure at a tech company
  • Experience architecting software used in production by millions of users
  • Strong backend and infrastructure instincts
  • Proven ability to manage a small team of engineers
  • High technical aptitude with a focus on system design and reliability

Responsibilities

  • Lead and manage a team of 4-6 engineers
  • Design intuitive APIs for both humans and AI agents
  • Build high-performance, low-latency systems considering agents as end-users
  • Engage directly with core infrastructure managing significant email volumes
  • Serve as a bridge between cutting-edge AI capabilities and traditional email systems
  • Own projects from initial design through to production deployment
  • Write clear code and maintain strong technical documentation
  • Gather and relay customer feedback as the main point of contact

Benefits

  • Breakfast, lunch, and dinner provided via Doordash
  • Medical, dental, and vision insurance
  • Equinox membership for fitness and wellness
Full Job Description
Location: San Francisco, CA

Type: Full-time, on-site

TLDR: we are seeing a surge in market demand as agents become real first-class citizens of the internet, and we are aggressively hiring in order to keep up. We're coming up with solutions in a problem space where no one in Silicon Valley knows the answer to either: how to build something agents want. If you like owning things 0 -> 1, lets chat.

We're looking for a founding engineer with strong backend and infra instincts to help build the primitives agents will use to communicate, authenticate, and operate in the real world. This is a role for someone who likes systems work: APIs, distributed infrastructure, reliability, developer tooling.

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
  • 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(an oxymoron we know)
  • 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
What we're looking for
  • 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: At a startup, speed is the only advantage we have over big-tech companies. But even more important is to care about your output and obsess about details.
  • You are a clear thinker and communicator: We have daily standups and weekly syncs in which we expect you to communicate tradeoffs, problems, and blockers directly.
  • You are highly technical: preferred you have prior experience shipping production software by real users as a software engineer at a tech company or startup. But hustlers are always appreciated.
Bonus points
  • Experience with cloud infrastructure, distributed systems, or developer tools
  • Experience with messaging, email, auth, or protocol-heavy systems
  • Experience building for AI/LLM use cases

Qualifications:
  • Has 3+ years of work experience as an engineer working on infrastructure at a tech company
  • Has architected software used in production by millions of users
Compensation:
  • $250k - $400k base salary
  • 1.0% - 2.0% equity
  • Breakfast, lunch, and dinner (Doordash)
  • Medical, dental, and vision insurance
  • Equinox membership

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