Founding Systems Engineer

Join Hire Hangar and work with fast-growing global companies while building a long-term, remote career. Job Title: Founding Systems Engineer (Performance) Location | On-Site — San Francisco, CA Time Zone | PST Role Overview: We are seeking a Founding Systems Engineer to join the earliest technical team at a fast-moving AI video infrastructure startup. The company's first product turns prompts and documents into whiteboard-style explainer videos in seconds, with a broader vision to make video generation fast, cheap, and programmable enough for AI to use video anywhere it uses text today. This is one of three founding engineering hires, focused on the technical systems that make the core product fast, efficient, and high quality. The ideal candidate genuinely enjoys understanding real system behavior, profiling bottlenecks, improving difficult product paths, and building clean interfaces around complex internals. A background in robotics, embedded systems, or electronics engineering is a strong signal for the kind of systems-level thinking this role requires. Key Responsibilities: Improve speed, efficiency, quality, and reliability across core product workflows Profile and debug bottlenecks across application code, media workflows, data movement, and infrastructure boundaries Build benchmarking, regression tracking, and test harnesses for important system behavior Improve concur...