Principal Python Engineer

🚀 Principal Python Engineer – Modeling & Simulation📍 Boston preferred | San Francisco | Remote🕒 Full-time | Hybrid or remote🛡️ U.S. security-clearance eligibility requiredWe’re hiring a hands-on Python Engineer to build advanced modeling, simulation and code-translation systems for mission-critical applications.What you’ll build⚙️ Production Python platforms🧠 Agentic AI and distributed workflows🔁 Queues, state machines and backend services🔌 REST, GraphQL and gRPC APIs🧩 Code-analysis, static-analysis and translation tools☁️ Cloud-based, containerized systemsStrong signals✅ Deep production Python experience✅ 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 shippedSenior and Principal candidates should also demonstrate technical leadership and mentorship while remaining hands-on.Benefits💰 Highly competitive compensation🏥 100% covered medical, dental and vision premiums📈 401(k) with 5% match🌴 Uncapped vacation🏡 Flexible hybrid or remote work📦 Relocation supportBoston is the preferred hub, but strong candidates in San Francisco or working remotely within the U.S. are encouraged to apply.