Founding Engineer at Quest AI
Jack and Jill AI
Founding Engineer
You will join as a founding engineer to build a proactive AI mentor that understands users deeply through digital footprints. This role involves solving complex problems in psychological profiling, memory architecture, and adaptive interfaces. You will work directly with repeat founders in San Francisco to ship a generational product that pushes human growth.
Location: San Francisco, USA
Why this role is remarkable:
- Work directly with repeat founders who previously led AI agent teams at Google and successfully exited their first startup.
- Tackle unsolved technical challenges like long-term compounding AI memory and proactive agentic behavior beyond simple chatbots.
- Join a small, elite team with high ownership, offering significant equity and the chance to define a new category of consumer technology.
What you will do:
- Architect a sophisticated memory system that uses digital footprints to build deep psychological profiles of users.
- Design and implement a morphing UI that personalizes the entire interface experience based on individual user needs and behaviors.
- Build and maintain robust evaluation frameworks to measure real-world behavior change and ensure the AI provides meaningful mentorship.
The ideal candidate:
- A strong generalist engineer who has a proven track record of shipping production-ready systems and finishing complex side projects.
- Experience building with LLMs and agents, with a deep understanding of memory orchestration, tool use, and reliable AI behavior.
- A product-minded, autonomous builder who thrives in fast-paced environments and is excited to use AI tools to accelerate their own workflow.
- Shared Context Lab is seeking a Founding Engineer in San Francisco, United States, to work directly with the CEO and CTO in building core product... ...opportunity is ideal for someone passionate about shaping the future of AI-powered software. #J-18808-Ljbffr Shared Context LabSuggested
- A growing AI-focused startup in New York is seeking a founding engineer to help architect and build their core product. This role demands strong backend and infrastructure experience, particularly with cloud technologies and scalable systems. You will engage closely with...Suggested
- Shared Context Lab is looking for a Founding Engineer to help build core product and infrastructure from the ground up. You will partner directly with leadership and own major parts of the stack. The ideal candidate is technical, creative, and energized by building results...Suggested
$150k - $250k
...As our Founding Security Reliability Engineer at Charta Health, you'll pioneer the application of Site Reliability Engineering principles to ensure the... ...and operational excellence of our cutting-edge generative AI platform. This is a unique opportunity to build and scale...Suggested- ...pioneering tech company in California seeks a design engineer to build their design system from the ground... ..., and experience in a startup environment. This founding design role is perfect for someone ready to shape the user experience in AI-native software. #J-18808-Ljbffr JinbaSuggested
$180k - $250k
AIC is seeking a Founding Engineer in New York to drive the development of innovative AI solutions. In this key role, you will design complex systems and APIs while collaborating with cross-functional teams. Ideal candidates will have over 2 years of full stack experience...Visa sponsorshipWork visa- Trajectory, based in San Francisco, is seeking a Founding Generalist Engineer to craft the product experience for continual learning. The role involves... ...strong full-stack engineering skills and experience with AI-powered products. The team comprises ex-DeepMind and OpenAI...
$180k - $220k
A tech startup is seeking experienced founding engineers to build optimization tools for datacenters focused on energy efficiency. The role involves... ...solving complex problems at the intersection of energy and AI. This position offers a competitive salary ranging from $180,0...Remote work$150k - $250k
Madrona Venture Labs is seeking a Founding Security Reliability Engineer in San Francisco to design and maintain secure infrastructure for generative AI healthcare solutions. This pivotal role focuses on applying SRE principles to bolster security within a regulated environment...- A tech startup in AI is seeking a Founding Engineer in San Francisco to set the strategic foundation for the Engineering Team. Responsibilities include designing user-critical features and collaborating with engineers and researchers. Ideal candidates should have 8+ years...
- ...cutting-edge recruiting startup is seeking an exceptional engineer to join their founding team in Chicago. As engineer #4, you will work closely with... ...backgrounds in TypeScript and React, along with practical AI experience. This is an opportunity to have a significant...
$225k
...Founding Engineer You will build the hardware and software ecosystem required to run real-time AI inside clinical settings. By overcoming infrastructure constraints like power and cooling, you will move V1 from prototype to production. This role involves defining a...Remote work$180k - $250k
...Job Description Job Description Founding Engineer – Applied AI — Antes Location: San Francisco, CA (Onsite preferred — exceptional remote candidates considered) Compensation: $180,000 – $250,000 base + equity Visa Sponsorship: H-1B, O-1, OPT supported...Full timeH1bRemote workRelocationVisa sponsorship- ...A cutting-edge construction AI company is hiring a Founding AI Engineer to build advanced AI tools for the construction industry. This role focuses on developing systems that optimize construction processes using machine learning and computer vision. Candidates should...Remote work
$125k - $175k
...A mental health startup is seeking a Founding Full-Stack Engineer to lead the development of AI-powered systems aimed at improving mental health care for older adults. This is a unique opportunity to shape core software from architecture to launch while working alongside...Remote work$160k - $250k
...Founding Engineer Opportunity Tightrope AI, Inc. — $7M seed-funded startup turning any website into a programmable API. As our second engineer, you will build the infrastructure that makes browser automation safe, reliable, and deterministic. Working alongside founders...Work at officeRemote workRelocation$170k - $350k
...Founding Engineer You will build the simulation and evaluation infrastructure that powers the training of frontier AI agents. By developing containerized sandboxes and orchestration systems, you will enable research labs to improve agentic models through rigorous simulation...Remote work- ...Founding Engineer High-growth AI automation startup As a Founding Engineer, you will build the core infrastructure for an AI-native platform that transforms legacy websites into programmable APIs. You will develop sophisticated browser-based agents, secure authentication...Remote work
- ...Founding Engineer, AI Do you agree we're living through the AI revolution? Do you want to be part of it — and run ahead of the curve? Are you ready to help 100x productivity? If so, join us. At Shiplight AI, our mission is to build the foundation for enterprise...Remote work
$200k
...Founding Engineer - Full Stack Join Muro AI as a Founding Engineer to modernize the $13 trillion construction industry. You will own the core platform end-to-end, building AI agents that automate complex pre-construction workflows. This high-impact role involves designing...Remote work- ...commerce: verified buyer video, structured with AI, and tied to outcomes. UGC video contains... ...is backed and supported by AI Fund. Founded by Andrew Ng, AI Fund is backed by over $... ...We can scale customers without bespoke engineering per store Required Qualifications...Odd jobRelocation
$250k - $380k
...Founding Perception Engineer Salary: $250-380k + 1-3% Equity Company Description: Crewline AI - Seed-stage robotics startup backed by Initialized Capital and Nebular VC Job Description: As the Founding Perception Engineer, you will architect the 3D perception...- ...About the Role We're seeking a Founding Engineer (AI & Product) as our first dedicated technical leader on the ground in the US. This role acts as the primary technical bridge between our Shanghai core R&D team and fast-growing US enterprise customers.You will focus...
$125k - $200k
...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. Founding Engineer ($125K - $200K + Equity) at Seed-stage healthtech AI platform...Contract work- ...Founding Engineer - Baton AI Location: San Francisco, CA (In-Person) Experience Level: 3+ years (Full-Stack Engineering) About Baton AI Baton AI (getbaton.ai) is building the enterprise automation platform for cross-application workflows. We're starting...
- A leading technology company is looking for a Founding Design Engineer to create intuitive user interfaces for AI Agents. This role involves close collaboration with top executives and requires a strong background in both engineering and design. The ideal candidate should...Relocation package
- A technology firm revolutionizing construction is seeking a Founding AI Engineer specializing in computer vision, LLMs, and machine learning. This role involves building AI systems that convert construction chaos into actionable intelligence. Candidates should have strong...Remote work
$200k
...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. Founding Engineer - AI ($200K+ + Equity) at Muro AI - SF-based AI for Pre-...- ...actions and chats with other countries. AI then powers the worlds' response (make an... ...entertainment. The Role We need a founding level AI/ML developer to work in-person full... ...an early-stage startup or as a founding engineer. This job listing is for a W-2...Full timeVisa sponsorship
$130k - $160k
...Job Description Founding Engineer (AI / Full Stack) San Francisco, USA (Relocation + Visa Sponsorship) $130,000 - $160,000 + Equity Revive Recruitment are proud to be partnered with an early-stage AI / HR Tech start-up backed by pre-seed funding, building...Work at officeRelocationVisa sponsorship
Do you want to receive more vacancies?
Subscribe and receive similar vacancies to Founding Engineer at Quest AI. Be the first to apply!

