Infrastructure Engineer, AI Tooling

MatX

. Make agents first-class users of infrastructure, each with its own identity, precisely scoped access, and an auditable activity trail .

Posted 9/22/2026full-timeMountain View • California • United StatesMid-LevelSenior💰 $120,000 - $600,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building and managing production infrastructure for coding agents, ensuring compliance with U.S. export control laws. Proficient in developing engineering workflows and modifying agent harnesses to enhance performance and accuracy.

Highest-signal resume keywords

Production Infrastructure ManagementEngineering Workflow DevelopmentAgent Harness ModificationSandboxing and Ephemeral ComputeBazel Remote Execution

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Infrastructure DevelopmentAgent Execution Environment BuildingFlow AutomationReview ToolingCoding Agent Utilization

Soft Skills

Strong Opinions on Agent FunctionalityAttention to Detail

Tools & Technologies

BazelVMsNo-Egress Sandboxes

Industry Keywords

U.S. Export Control ComplianceDynamic InfrastructureAuditable Activity TrailMonorepo ConsolidationLLM Agents

About the role

Key responsibilities & impact

Make agents first-class users of infrastructure, each with its own identity, precisely scoped access, and an auditable activity trail
Build agent execution environments such as short-lived VMs and no-egress sandboxes for long-running tasks
Build the company agent knowledge base by consolidating information from the monorepo, design documents, and Slack for agent consumption
Work on infrastructure at a company small enough for the work to reach every engineer
Develop infrastructure for coding agents that improves their context and ability to verify their work

Requirements

What you’ll need

Have run production infrastructure somewhere dynamic and know which shortcuts you’ll regret
Use coding agents heavily and have strong opinions on what you let them do, what you don't, and how you verify their work
Built engineering workflows (methodology, flow automation, review tooling, agent harnesses) that other engineers adopted and kept
Notice LLM agents asserting something confidently wrong and modify their harness in response
Bonus: operated Bazel remote execution or a remote cache
Bonus: familiar with sandboxing and ephemeral compute for untrusted workloads
Must be currently authorized to work in the US
Must be able to perform job functions in compliance with U.S. export control laws without obtaining a license from U.S. export control authorities

Benefits

Comp & perks

4 weeks PTO (accrued)
12 company Holidays
Up to 3 weeks remote work
Company-subsidized Medical (Kaiser or Anthem) for employees & dependents
Guardian Dental and Vision insurances for employee & dependents
Life insurance (employee only)
HSA and FSA offerings via Lively
Roth IRA and/or 401K retirement plans
Up to 5% company contribution to 401K, even if you don't contribute
100% company-paid life insurance (up to $300K)
Long-term disability insurance
$1500 Professional Development Budget per year
Onsite team lunch and dinner Monday-Friday
100% reimbursement for daily commute via company Uber account or train rides
$50/month MatX E[x]tras perk allowance
$35/month cellular reimbursement
$40/month wifi reimbursement
Up to $1000 for remote office setup purchases
100% paid mental health benefit via SpringHealth and Guardian EAP
Up to 12 weeks paid parental leave
10 weeks pregnancy disability leave
Flexible return-to-work hours
Benepass reproductive health and parental benefit
Equity