This range is provided by Arrows. Your actual pay will be based on your skills and experience — talk with your recruiter to learn more. Base pay range $150,000.00/yr - $250,000.00/yr Direct message the job poster from Arrows Director of Europe & Al/ML/ Data - UK, DACH & BENELUX Founding Software Engineer - AI Start-Up (San Francisco | Hybrid | Equity + Salary) One of SF’s most promising AI start-ups are looking for their first few Founding Engineers! Backed by top-tier investors and led by an elite founding team from Stanford, Harvard, MIT, this venture is already attracting serious attention within the AI space!! Currently in stealth mode, they’re now searching for a Founding Software Engineer to join the core team - someone ambitious, technically exceptional, and ready to help build the company from the ground up! About the Company Founded by alumni of successful AI start-ups, this is a business led by people who’ve done it before - and done it well. With strong funding and a clear product vision, they're building cutting-edge technology that leverages the latest advances in AI to solve high-impact problems. Python/Go - core backend and ML integration AWS - scalable, production-grade infrastructure This is a hands-on role where you’ll work across the stack and have real influence over the architecture, tooling, and direction of the product. What They’re Looking For: A top-tier academic background – MIT, Berkeley, Harvard, Stanford 4+ years of experience in high-growth start-up environments Strong engineering fundamentals and a deep product mindset Experience building and scaling real-world applications from scratch Passion for AI and enthusiasm for working in a fast-moving, collaborative setting A team player who thrives in a full-time, in-office environment (SF - 2/3 days/week) What’s on Offer: Highly competitive salary Significant equity stake – this is a founding-level opportunity Close collaboration with some of the brightest minds in AI and software A chance to help shape company culture, technology, and trajectory The energy, speed, and ownership of an early-stage start-up - with real backing If you’re an ambitious engineer ready for your next big challenge, and want to be part of something truly special, this could be the opportunity that defines your career! Interested? Let’s talk! Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Industries Software Development Referrals increase your chances of interviewing at Arrows by 2x Sign in to set job alerts for “Software Engineer” roles. Mountain View, CA $145,000.00-$170,000.00 1 week ago Software Engineer, AI Platform - New Grad Mountain View, CA $145,000.00-$170,000.00 1 week ago Mountain View, CA $138,225.00-$207,575.00 1 week ago San Francisco, CA $57.00-$61.00 3 days ago San Francisco, CA $57.00-$61.00 3 days ago Software Engineer (L4), Content & Business Products Software Engineer, Frontend (All Levels) Software Engineer, AI Intern (Winter 2026) San Francisco, CA $57.00-$61.00 3 days ago Software Engineer, AI Intern (Summer 2026) San Francisco, CA $57.00-$61.00 3 days ago Mountain View, CA $130,000.00-$176,000.00 4 days ago San Francisco, CA $125,000.00-$218,900.00 6 days ago Graduate Software Engineer (Redwood City, CA) San Jose, CA $100,500.00-$173,250.00 3 days ago San Francisco, CA $150,000.00-$180,000.00 6 days ago San Francisco, CA $255,000.00-$405,000.00 3 days ago Software Engineer - New Grad (2026 Start) San Jose, CA $113,400.00-$206,300.00 1 week ago San Francisco, CA $163,000.00-$225,000.00 10 hours ago Software Engineer (Fullstack) - Payments San Francisco, CA $163,200.00-$223,200.00 2 days ago Software Engineer - New Grad (2026 Start) San Mateo, CA $110,000.00-$135,000.00 1 week ago We’re unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI.

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