# Senior Engineer, Backend/Infra

**Company:** [AgentMail](https://zerogtalent.com/ai-companies/agentmail)
**Location:** San Francisco, CA, US
**Work mode:** On-site
**Seniority:** Mid
**Employment type:** Full Time
**Salary:** USD 250K–400K/yr
**Category:** Software
**Listed:** 2026-03-24

[View and apply on Zero G Talent](https://zerogtalent.com/ai-jobs/agentmail/senior-engineer-backend-infra-90991)

## Job description

AgentMail is building the identity and communication infrastructure for AI agents, starting with email. We are looking for a Senior Engineer with backend and infra focus to architect systems for agents as the end users.

Responsibilities:

-   Design APIs that are intuitive for both humans and LLMs
-   Architect high-throughput, low-latency systems
-   Write and review clean, idiomatic code
-   Maintain comprehensive documentation
-   Lead and manage a team of 4-6 engineers

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

## Other open roles at AgentMail

- [Founding Product Engineer](https://zerogtalent.com/ai-jobs/agentmail/founding-product-engineer-115147) — San Francisco, CA, US
- [Developer Support Engineer](https://zerogtalent.com/ai-jobs/agentmail/founding-support-engineer-113765) — San Francisco, CA, US
- [Agent Experience Engineer](https://zerogtalent.com/ai-jobs/agentmail/agent-experience-engineer-104429) — San Francisco
- [Founding GTM & Operations Lead](https://zerogtalent.com/ai-jobs/agentmail/founding-gtm-operations-lead-104427) — San Francisco
- [Founding PLG & Community Lead](https://zerogtalent.com/ai-jobs/agentmail/founding-plg-community-lead-104428) — San Francisco

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*Source: [Zero G Talent](https://zerogtalent.com), the job board for space, defense, AI, robotics and frontier-tech companies.*