Founding Software Engineer Company: Confidential — venture-backed technology company Location: Los Angeles, CA (on-site 5 days per week at a 36,000 sq ft facility in Florence; relocation support available) Compensation: $140,000 - $200,000 + 0.2% - 1.0% equity Employment Type: Full-time Visa Sponsorship: Not available; must meet ITAR requirements About the Company The client's mission is to accelerate the world's transition to advanced materials, combining AI software, robotics and full-stack manufacturing to industrialize advanced composite materials for defense and aerospace. The client has raised a $16.5M seed and is scaling a composite manufacturing facility toward 1M frames per year. The Role The client is hiring high-agency, full-stack Founding Software Engineers (2+ years of production shipping) excited to work where software meets the physical world. You will work as an individual contributor alongside world-class hardware and automation engineers, with no ticket queues and no dedicated PM or QA: you find what matters, own it end to end and ship fast. What You Will Do • Build Argos, the client's custom operating system for everything from raw material to finished part: supply chain, quoting, pricing, inventory and operational flow. • Develop Argos Sim, the simulation layer that post-trains AI models on factory-floor data to predict how composite parts behave. • Own factory automation software: ingest real-time equipment telemetry, orchestrate robotics and build a 24/7 digital twin of the production line. • Design backend systems that mirror the physical world, in the style of a Palantir ontology applied to a manufacturing facility. What You Bring • 2+ years shipping production software across a TypeScript frontend and a Python or Go backend • A record of building end-to-end products • Comfort in fast-moving, ambiguous environments with full autonomy • Excitement about software for physical manufacturing • US person status (ITAR); ability to work on-site in Los Angeles 5 days a week Nice to Have • Manufacturing software, data engineering, CAD, computational geometry or simulation experience Tech Stack TypeScript, Python, Go, CAD, computational geometry, 3D environments, digital twin, robotics/sensor integration, AI/ML post-training and simulation Before you apply: get a free recruiter-readiness score for your resume at CareerStanding — about a minute, no signup, and your resume stays in your browser.