Founding AI Backend Engineer Seed Equity + Health
Day One Partners
Day One Partners is seeking a backend developer in San Francisco to build and scale AI-powered systems. Join a venture-backed startup creating technology to navigate chronic health conditions. You will have significant ownership over architecture and product direction, alongside competitive compensation and meaningful equity. The ideal candidate will have strong experience in production software systems, enjoy ambiguity in a startup environment, and have a passion for AI and workflow automation. #J-18808-Ljbffr Day One Partners
$160k - $200k
About Sprinter Health:At Sprinter Health... ...Software Engineer with interest in agentic AI and at least 2-3... ...impact as one of the founding engineers of our... ...the freedom of a seed stage startup, but... ..., full-stack or backend-focused... ...Base Salary $160K - $200K • Offers EquityEmployment EquityTemporary workWork at officeMonday to FridayMonday to Thursday$150k - $300k
...0–$300,000 + 0.1%–1% equity About the Company... ...Markdown and JSON that AI agents and LLMs can... ..., and healthcare. Founded 2024 · 1–10 people (Seed) · Industry: AI Tools... ...A Founding Software Engineer based in San Francisco... ...dense team. The role is backend- and infrastructure-...Employment EquityFull timeH1bWork at officeVisa sponsorship$125k - $200k
...0–$200,000 + 0.3%–1% equity About the Company... ...evidence overload. The founding team includes engineers who have built... ...2025 · 1–10 people (Seed) · Industry: Public safety... ...safety / law-enforcement AI The Role An early... ...leads across backend infrastructure and applied...Employment EquityFull time- ...About Reducto Reducto helps AI teams ingest real world... ...from financial statements to health records — is locked in unstructured... ..., and are looking for a Backend/AI Engineer. The Opportunity As... ...you: Have prior experience founding a company or building...SuggestedFull timeWork at officeLocal area
$120k - $180k
...Description Job Description About the Role This is a founding AI engineering role at a seed-stage construction technology company building an... ...0,000 per year, depending on experience. Early-stage equity as a founding team member. Direct impact on the product...Employment EquityFull timeWork at officeRemote workRelocation$120k - $180k
...Description Job Description About the Role This is a founding engineering role at a seed-stage AI startup building the intelligence layer for the... ...USD annually, depending on experience. Early-stage equity as a founding team member. Location San Francisco...Employment EquityFull timeWork at officeRelocation$120k - $180k
...Description Job Description About the Role This is a founding engineering role at a seed-stage AI startup building the intelligence layer for the... ...0,000 – $180,000 per year, depending on experience Equity participation as a founding team member Opportunity...Employment EquityFull timeWork at officeRelocation$160k - $200k
...Description About the Company A seed-stage company (founded 2025) on the frontier of agentic AI for the built world,... ...places in tech where an engineer can work directly on... ...0–$200,000 base + 0.5–2% equity. Free lunch/dinner, fully paid health with $1,000+/yr employer...Employment EquityFull timeVisa sponsorshipWeekend work$160k - $200k
...0–$200,000 + 0.5–2% equity About the Company Our client is a seed-stage startup building agentic AI for the built world:... ...places in tech where an engineer works directly on... ...crisis. This is a founding-engineer seat on a tiny... ...office, fully paid health insurance with $1,00...Employment EquityFull timeWork at officeVisa sponsorshipRelocation packageWeekend work$150k - $200k
...00–$200,000 + 0–2% equity About the Company... ...action by giving AI agents a dependable... ...for agents. It was founded by experienced payments... ...with a founding engineer from a major search... ...Founded 2024 · Seed · Industry: FinTech... ...experience, frontend and backend ~ TypeScript,...Employment EquityFull timeH1bVisa sponsorship- ...caring nurses while AI agents handle the tedious backend work — all covered by... ..., 24/7 personalized health assistance is only... ...of yourself. Our founding team brings a mix of... ...re looking for an AI engineer to build the LLM-powered... ...Meaningful early equity. Competitive...Employment EquityFull time
- ...Who we are: Cooper is an AI coworker for the insurance industry. Getting a business... ...About the role: We're hiring the Founding Engineering team for a new hyper-growth AI business... ...Benefits: ~ Competitive salary & equity ~ Medical, dental & vision insurance...Employment EquityFull time
$200k - $230k
...connection. Across the country, health plans and employers look... ...and better health. Founded in 2017 and... ...expanding our founding engineering team and looking for a Staff Backend Software Engineer to join... ...certifications, and skill set). Equity: Meaningful equity...Employment EquityFull timeWork at officeLocal areaImmediate startFlexible hours2 days per week3 days per week- ...against them. Revic is an AI-native sales acceleration engine built to uplift sales professionals... ...execution. As Revic’s Founding GTM AI Engineer, you will... ...Competitive salary plus meaningful equity (true founding ownership) Premium health, dental, and vision...Employment EquityRemote jobFull time
- ...Who We Are Citizen Health was founded on the belief — shaped... ...uniquely combining data, AI, and community,... ...seeking AI/Machine Learning Engineers to lead the development... ...Collaborate with backend engineers to integrate... ...Competitive salary + equity package Comprehensive...Employment EquityFull timeFlexible hours
- ...About Kastle Kastle is building AI operating system for consumer lending, starting... ...with AI. About the Role As a Founding Applied AI Engineer, you'll be instrumental in building... ...Competitive salary, meaningful early-stage equity, and relocation support Great team:...Employment EquityFull timeLive inRelocation package
- ...Description We are hiring a Founding Software Engineer in San Francisco. We... ...engineering archetype at Unsiloed AI and set the ceiling... ..., build, and scale core backend systems powering document... ...compensation + equity Full health insurance coverage Free...Employment Equity
$150k - $250k
AgentMail (YC S25) is seeking a Founding Engineer in San Francisco to design intuitive APIs and architect high-performance systems. This role... ...package includes a base salary of $150k-$250k and equity ranging from 0.5% to 2.0%. Additional perks include meal provisions...Employment Equity- David Joseph & Company is seeking a Founding Engineer in San Francisco, on-site, full-time. You will own the entire technical surface alongside... ...and specialists, and to impact a healthcare startup at its earliest stage with equity. #J-18808-Ljbffr David Joseph & CompanyEmployment EquityFull time
- ...Description About us Health is the most important... ...health clinic. We're an AI-native digital health... ...across all 50 states. Founded four years ago, we've... ...Ventures, J.P. Morgan Growth Equity Partners, Maverick... ...for talented Senior Backend Engineers to join our fast-...Employment EquityFull timeWork at officeRemote work
- Alleviate Health, based in San Francisco, is seeking exceptional founding engineers to work on pioneering AI agents that autonomously recruit and retain patients in clinical trials. As part of a rapidly growing team, you will work on projects that involve orchestrating...
$215k - $290k
Get AI-powered advice on this job and more exclusive features... ..., we've raised $4.7M in seed funding and hit $14M ARR... ...startups at About the Role As a Founding Senior Backend Engineer, you’ll shape the core... ...from home) Cash: 215k - 290k Equity : 0.4 - 0.6% Location :...Employment EquityFull timeInternshipWork at officeWork from homeVisa sponsorshipFlexible hours$180k - $230k
Founding Engineer San Francisco, CA · On-site · Full-time Compensation... ...$180,000-$230,000 + equity About the Company... ...an early-stage (pre-seed) healthcare AI company building... ...piloting with a major U.S. health system, with deep EMR... ...Tech stack: Python backend, modern front end,...Employment EquityFull timeVisa sponsorship- LegalCare, based in San Francisco, is seeking its founding engineer to take the voice AI intake receptionist from prototype to production-grade system and to own the referral platform deployed at partner firms. You will handle privacy and security for sensitive client...Employment EquityRemote workRelocation
$150k - $200k
...Job Description About the Role A fast-growing, AI-first consumer social platform is hiring a Founding AI Engineer to join its core team in San Francisco. The... ...Salary: $150,000 – $200,000 USD annually Equity: Meaningful founding-level equity Early-stage...Employment EquityFull time$120k - $170k
Alldus International Consulting Ltd is hiring a Founding Engineer in San Francisco to join an AI startup in the eCommerce industry. The successful candidate... ...offers a salary range of $120k - $170k alongside equity. #J-18808-Ljbffr Alldus International Consulting LtdEmployment Equity$160k - $210k
...Description Job Description Mason AI is on the frontier of agentic... .... We’re looking for a Founding AI Engineer to improve Mason's accuracy... ...0k). Generous early-stage equity (0.75%-2%). Free lunch and... ...at the office. Fully paid health insurance with over $1000/...Employment EquityFull timeWork at officeFlexible hoursWeekend workWeekday work$160k - $300k
...based in San Francisco, is looking for a Founding Engineer to lead the development of their cutting... ...and optimize the performance of AI agents. Ideal candidates will have strong... ...from $160,000 to $300,000 including cash, equity, and bonus. #J-18808-Ljbffr Lance , Inc.Employment EquityFull time- ...) in San Francisco is hiring its founding Members of Technical Staff to develop AI agents crucial for processing complex... ...ideal candidate will have solid engineering experience with a focus on full-... ...for growth and meaningful equity. #J-18808-Ljbffr Justinian (YC S...Employment EquityWork at office
$120k - $200k
...scaling top start‑up teams $120,000 - $200,000 + 0.5‑2% Equity + Flexible PTO Are you an AI engineer who wants to build and own the core agentic systems... ..., whilst benefiting from full autonomy and founding‑level equity? This is a rare opportunity to join a YC...Employment EquityFull timeImmediate startFlexible hours
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