Hiring: Product Engineer ($125k-$200k + Equity) at well-funded AI safety startup Company: Jack & Jill Location: San Francisco, CA Job Posted Time: 2026-09-16 10:14:30 Target Skills & Keywords : Python, React, TypeScript About the job Experience: •3+ years of experience building complex, full-stack products from initial ambiguity to production, ideally within a high-growth startup environment. Required Skills: •Why this role is remarkable •Contribute to the critical mission of AI safety and human-aligned AGI by building evaluation infrastructure used by leading foundation model labs. •Join a well-funded Series B startup backed by top-tier VCs, offering meaningful equity and the chance to work at the frontier of AI research. •Work directly with a founding team of industry veterans from major technology companies in a high-velocity, in-office culture in San Francisco. •Develop end-to-end evaluation platforms, including frontend tools, backend services, and APIs that simulate complex real-world software interactions. •Partner with research teams to design sophisticated data models and software workflows for testing model performance in business contexts. •Implement modern development practices and AI-assisted coding tools to rapidly build and deploy infrastructure that ensures AI reliability and alignment. Qualifications: •Has 3+ years of experience building complex, full-stack products from initial ambiguity to production, ideally within a high-growth startup environment. •Possesses deep technical proficiency in React, TypeScript, and Python, with a strong intuition for how enterprise software behaves in production. •Demonstrates a proactive, owner-mindset with the ability to navigate complex requirements and build robust tools for evaluating AI performance. •Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. •And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. •Jack's an AI agent for job searching and career coaching. He works for you. •Jill is the AI recruiter working for the company. She recruits from Jack's network. •If it's a match and the company wants to meet you, they'll make the intro. In the meantime, if you'd like, Jack will send you excellent alternatives. •We never post fake jobs •This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Interested candidates, please apply directly through the job posting on company's career page or try via AI auto apply on this platform. Don't miss this opportunity to join a forward-thinking team!