Senior Full-Stack Engineer ($150k–$200k + Equity) at a16z-backed healthtech startup

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers.She will pick the best candidates from Jack's network.The next step is to speak to Jack.Job TitleSenior Full-Stack EngineerSalary$150k–$200k + EquityCompany DescriptionSeries A digital health startup backed by a16z and Khosla Ventures helping 10M+ seniorsJob DescriptionJoin a mission-driven team as a Senior Full-Stack Engineer building a clinical platform that has already reduced falls in older adults by 46%. You will own the architecture and end-to-end feature development on a React/Python/AWS stack, shipping high-impact products like ML-driven care guidance and EHR integrations to improve healthcare outcomes for millions.LocationLos Angeles, USAWhy this role is remarkableRare opportunity to join an a16z and Khosla Ventures-backed startup at an inflection point where product-market fit is proven and scaling is the primary focus.Direct clinical impact: build technology that significantly reduces injury and hospitalizations for a population of 10 million Medicare members.High ownership environment where you will shape technical direction and influence the engineering foundation rather than just executing tickets.What You Will DoArchitect and maintain scalable, HIPAA-compliant components on AWS to power member engagement and clinical messaging workflows.Partner with data science and clinical teams to prototype and launch ML-driven personalization and care guidance features.Drive technical excellence by mentoring teammates, conducting code reviews, and evolving the platform's design system and infrastructure.The ideal candidate5+ years of professional experience scaling modern web applications using Javascript (React) and Python on cloud infrastructure.Product-minded engineer with a growth mindset who thrives in fast-paced startup environments and can navigate technical ambiguity.Strong communicator who possesses deep empathy for older adults and is motivated by improving healthcare accessibility and independence.Who are Jack & Jill?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.Next stepsStep 1. Visit the job listing.Step 2. Click 'Talk to Jack', or go straight there: https://www.jackandjill.ai/jobs/senior-full-stack-engineer-150k-200k-equity-at-a16z-backed-healthtech-startup-3c563e30-2129-4e3c-bf5c-4eea6ba46142?utm_source=linkedin&utm_medium=job_post&utm_campaign=featured_role_3c563e30-2129-4e3c-bf5c-4eea6ba46142Step 3. Talk to Jack so he can understand your experience and ambitions.Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role.Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction.Step 6. If not, Jack will find you excellent alternatives. All for free.We never post fake jobsThis isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network.Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description.We appreciate this can make them look a bit suspect, but there isn't much we can do about it.Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.