Developer Infrastructure Engineer

📋 Job Overview

MatX's mission is to make the world’s best AI models run as efficiently as allowed by physics, bringing the world years ahead in AI quality and availability.

🏢 About MatX

What MatX is Building
MatX's mission is to make the world’s best AI models run as efficiently as allowed by physics, bringing the world years ahead in AI quality and availability.

🎯 The Role

This role covers three areas of equal weight:
Branch and release methodology. Which branches exist, what each one is for, how a change reaches each one, and how that is verified.
CI performance and debugging. Keeping a large, EDA-heavy test suite fast, affordable, and reliable, and finding the cause when it is not.
Measurement and diagnostics. Instrumenting the above so that the state of the system is visible without anyone having to ask.

✅ Key Responsibilities

• Operating the long-lived branches. Protected release branches run alongside the main branch, each with its own rulesets, presubmit checks, and notifications.
• Making "what is the current version of X" mechanical. Several views of the same deliverable have to agree: a build from source, an archived release artifact, and whatever a downstream consumer is actually running.
• Keeping CI fast and reliable as it grows. EDA-heavy test suites are slow and expensive by nature, which makes gradual degradation easy to miss.

📌 Required Qualifications

• Deep experience in one of the three areas plus working knowledge of the other two is preferable to moderate experience in all three.
• Version control internals. You can explain what a rebase does to commit identity, recover a branch that was deleted, verify by content that a cherry-pick landed, and describe what a squash merge queue does to history.
• CI systems experience. Merge queues, required checks, event-trigger semantics, app-based authentication, concurrency controls, and self-hosted runners.
• Judgment under a schedule. You would be telling leadership what is and is not in a milestone.

⭐ Desirable Experience

• Developer-infrastructure work under hard deadlines in another industry (silicon, aerospace, games)
• Experience with repository structure at scale, whether monorepo or polyrepo
• Familiarity with EDA flows.

🎁 Benefits

Time off: 4 weeks PTO (accrued) + 12 company Holidays + up to 3 weeks remote work
Health: Company-subsidized Medical (Kaiser or Anthem) for employees & dependents, Guardian Dental and Vision insurances for employee & dependents, and life insurance (employee only), plus HSA and FSA offerings via Lively.
Financial Wellbeing: Choose from Roth IRA or 401K (or both) retirement plans with up to 5% company contribution to 401K (even if you don't contribute). Also, 100% company-paid life insurance (up to $300K) and long-term disability insurances.
Professional Development: $1500 Professional Development Budget (per year)
Team Meals: MatX provid