Senior Software Developer

Hestus is a Software Development firm offering AI powered software to speeds up the development of hardware.

Location: San Mateo, CA
Company size: 2–10
Posted: 1mo ago
Via: Yc

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Job listing · Updated 21 AUG 2026

Senior Software Developer

Hestus· San Mateo, CA, USView company profile

Job title: Senior Software Developer
Job location: San Mateo, CA, US
Job listing URL: https://www.ycombinator.com/companies/hestus-inc/jobs/FapkglH-senior-software-developer
Job description: **Location:** San Mateo, CA \ **About Us:** We are Hestus, and we build AI-powered CAD to speed up the hardware development process. Our team is small, scrappy, and growing fast. We are looking for an experienced and driven Senior Software Engineer to join us. If you like to own problems end-to-end and are passionate about technology, we want to hear from you! **Responsibilities:** * Own the design, architecture, and delivery of core systems end-to-end: from ambiguous problems to shipped, maintained products. * Partner with founders to turn fuzzy goals into technical roadmaps, and drive them to ship. * Set and raise the engineering bar: code review, testing standards, and architectural direction across the codebase. * Lead the design and productionization of the machine learning systems behind our AI-powered CAD. * Troubleshoot, debug, and resolve defects: from everyday bugs to systemic issues in performance, reliability, and scalability. * Build on and improve our engineering practices (CI/CD, testing, observability) as the team and product grow. * Help shape our engineering culture and team as we grow. **Requirements:** * 7+ years building and shipping production software. * Deep proficiency in Python and experience designing backend services that scale (e.g., Django, Flask, SQL). * Hands-on experience building and deploying machine learning models in production. * Track record of owning systems end-to-end and making sound architectural tradeoffs with limited direction. * Comfort with ambiguity and a track record of raising the technical bar of the teams you work with. * Strong communication and teamwork skills. * Strong Computer Science fundamentals **Bonus Skills:** * CAD, geometry, or computational-geometry domain experience. * C#/.NET (some add-ins are C#). * Experience packaging and shipping native desktop applications on Windows and macOS, including code signing. * Deep AWS / cloud / infrastructure / DevOps experience at scale. * Early-stage startup or 0→1 product experience. **What We Offer:** * Competitive salary and equity options. * Comprehensive health insurance, including medical, dental, and vision coverage. * Catered lunch. * Unlimited time-off. * A collaborative and inclusive work environment. * Opportunities for professional growth and development. * The chance to be part of a passionate team building innovative products.

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