freehire launches on Product Hunt on 26 August.

Follow →

Principal Python Engineer

Principal Python Engineer – Modeling & Simulation

We’re hiring a hands‑on Python Engineer to build advanced modeling, simulation and code‑translation systems for mission‑critical applications.

What you’ll build

  • Agentic AI and distributed workflows
  • Queues, state machines and backend services
  • REST, GraphQL and gRPC APIs
  • Code‑analysis, static‑analysis and translation tools

Strong signals

  • C++ and AFSIM, or comparable simulation exposure
  • Complex backend or distributed‑system ownership
  • Strong understanding of APIs, data structures, failure handling and performance
  • Experience in defense, autonomy, robotics, aerospace, geospatial, logistics or operations research
  • Clear, confident communication about systems you personally designed and shipped

Senior and Principal candidates should also demonstrate technical leadership and mentorship while remaining hands‑on.

  • 100% covered medical, dental and vision premiums
  • 401(k) with 5% match
  • Flexible hybrid or remote work

Boston is the preferred hub, but strong candidates in San Francisco or working remotely within the U.S. are encouraged to apply.

See also

Tailor your CV for this role?

We couldn't check your fit for this role — add a CV to your profile to see it next time.

A new version of freehire is available