Staff Frontier Engineer — AI Systems & Safety

FirstMile Ventures; United States; Remote; USD 200,000 - 300,000; Full time

Benefits offered by this job

401(k) with Company Match

Medical, Dental & Vision Coverage

Employee Assistance Program (EAP)

Disability Insurance

Flexible Open PTO

Paid Sick Leave

Paid Parental Leave

RTD EcoPass (Colorado-based)

Job summary

Pax8 is seeking a Staff Frontier Engineer to own and operate a critical, hard-to-build system. You will drive technical strategy, push for end-to-end optimization, and mentor other engineers to own complex systems.

This remote-US role emphasizes safety, judgment, and state-of-the-art AI foundations in a fast-growing cloud commerce environment. You will work within Frontier Engineering, collaborating across product and security to ensure scalable, auditable systems.

Qualifications

• Experience owning and operating complex systems.
• Ability to make high-stakes decisions on ambiguous problems.
• Ability to document technical direction for multiple audiences.

Responsibilities

• Own, build, and operate a hard-to-reason system with a technical strategy.
• Make consequential calls on what to build, scale, or kill with data-informed judgment.
• Exercise systems thinking across ownership boundaries to optimize end-to-end.
• Own the work and run it with a team behind you.
• Instrument shipped value with data-backed adoption metrics.
• Mentor engineers toward owning complex systems.

Skills

Building

Judgment

Writing

Mentorship

Tools

Claude AI

Job description

Pax8 is seeking a Staff Frontier Engineer to own and operate a critical, hard-to-build system. You will drive technical strategy, push for end-to-end optimization, and mentor other engineers to own complex systems.

This remote-US role emphasizes safety, judgment, and state-of-the-art AI foundations in a fast-growing cloud commerce environment. You will work within Frontier Engineering, collaborating across product and security to ensure scalable, auditable systems.