primitivecommunication for agentsEmail Infrastructure EngineerFull-time · San Francisco, CA, US · $190K - $230K
Salary$190k – $230k
LocationSan Francisco, CA, US
Work modeon-site
Typefull-time
EquityIncluded
Company size11+ people
First seen1w ago
Last seen1d ago
Email Infrastructure Engineer at primitive
Location: San Francisco, CA, US
Type: Full-time
Salary: $190K - $230K
Equity: 0.25% - 0.75%
Experience: 3+ years
Visa: US citizen/visa only
About the role
About primitive.dev
primitive.dev is building the communication layer for the agent economy. As AI agents increasingly act on behalf of people and businesses, companies need infrastructure to identify them, understand what they need, and interact with them at scale.
We rebuilt email from the ground up for machine-to-machine communication, optimizing the entire stack for latency, throughput, reliability, and developer experience. On top of that infrastructure, we deploy and operate agents for our customers. They begin as a general interface to the business, then learn from incoming traffic and create specialized agents to handle recurring workflows.
What you’ll do
Build the infrastructure that makes primitive.dev a full-scale email service provider. You will work across bare metal, Kubernetes, and the mail stack to build systems capable of moving billions of agent messages quickly and reliably. This role spans distributed systems, networking, SMTP, queues, deliverability, reputation, and abuse.
What you bring
•
You have deep experience with Kubernetes, Linux, networking, and production infrastructure
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You understand email systems, including SMTP, MTAs, queues, or deliverability
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You are as comfortable writing production software as operating production infrastructure
Nice to have
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Experience operating high-volume email or messaging systems
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Experience with bare-metal infrastructure or Rust
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Former founder
Compensation
$190k-$230k base salary plus equity. World-class benefits.
Full-time and in person in San Francisco, relocation fully covered if needed.