HartleyCo is hiring: Senior Software Engineer in San Francisco

Get AI-powered advice on this job and more exclusive features. This range is provided by HartleyCo. 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 - $300,000.00/yr Direct message the job poster from HartleyCo Headhunter | Founding Engineering Hires | Partner to YC & Tier 1 VC Portfolio | Facilitating Growth Senior Software Engineer - YC-backed AI Platform San Francisco (preferred) / Remote - with monthly SF visits Our client, a YC-backed startup with a recent $6M seed round, is on a mission to empower non-technical founders to turn ideas into scalable software businesses. Their platform bridges the gap between AI-generated code and production-ready products - delivering not just the build, but the infrastructure, tooling, and go-to-market support to help new companies succeed. This is a rare opportunity to join a high-caliber founding team (ex-serial founders with a decade of working together) and work on deep, complex engineering problems that make sophisticated tech invisible to end users. What youll do: Design and build full-stack features from scratch - front-end, back-end, infra, and architecture Architect modular, reusable systems that scale Work closely with product and design to ship quickly without sacrificing quality Collaborate with a small, senior team that values high autonomy and zero fluff Keep pace with the latest technologies and contribute to technical direction Take ownership end-to-end - no just my piece of the stack mentality What were looking for: 4-10 years experience in software engineering, with strong CS fundamentals Proven 0-to-1 product experience (ideally as a Founding Engineer or early hire at a VC-backed startup) Fluency in TypeScript and React (React Native a plus) Experience with AWS , Docker , Postgres , and scalable architectures Ability to operate without heavy reliance on AI coding tools - you can code and architect from scratch Strong communicator who thrives in high-autonomy, fast-paced environments Based in or willing to relocate to SF (remote possible for exceptional candidates who can attend 3-day on-site sprints monthly) Be part of a high-bar engineering culture - every teammate is senior-level or above Ship products that help thousands of founders bring their ideas to life Competitive comp - salary at the 90th percentile for top performers, plus meaningful equity Work directly with the founders to shape the companys technical future No bureaucracy, no layers - just a flat, hands-on team moving fast If youre the kind of engineer who loves building from the ground up, hates red tape, and wants to work with an elite team solving ambitious problems, we should talk. Seniority level Seniority level Mid-Senior level Employment type Employment type Full-time Job function Job function Information Technology Industries IT Services and IT Consulting Referrals increase your chances of interviewing at HartleyCo by 2x Sign in to set job alerts for Software Engineer roles. San Francisco, CA $160,000.00-$180,000.00 2 days ago San Francisco, CA $56.25-$137,000.00 3 days ago Sunnyvale, CA $56.25-$137,000.00 3 days ago Software Engineer (L4), Content & Business Products San Francisco, CA $130,000.00-$238,000.00 8 hours ago Mountain View, CA $130,000.00-$176,000.00 1 week ago San Francisco, CA $163,200.00-$223,200.00 2 days ago Software Engineer, AI Intern (Summer 2026) Software Engineer, AI Intern (Winter 2026) Software Engineer Intern, Frontend - Fall 2025 Mountain View, CA $158,000.00-$198,000.00 2 days ago San Francisco, CA $150,000.00-$230,000.00 2 days ago Software Engineer (L5) - Open Connect Platform United States $100,000.00-$720,000.00 3 days ago San Francisco, CA $180,000.00-$280,000.00 1 day ago San Francisco, CA $150,000.00-$283,000.00 2 days ago Software Engineer Intern, Frontend - Winter 2025 Were unlocking community knowledge in a new way. Experts add insights directly into each article, started with the help of AI. #J-18808-Ljbffr