Founding Engineer Jobs
Founding Engineer jobs are open across fintech, healthtech, enterprise SaaS, and consumer tech, from early-career engineers who want outsized ownership to senior and staff-level builders, with specializations in backend systems, full-stack product development, and infrastructure. Find a role that fits from the openings below and apply directly.
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About the Role
Join a small, in-person founding team in San Francisco building an AI-first platform that organises real-world social connections for young people — think curated small-group hangouts powered end-to-end by AI agents. As a Founding AI Engineer, you'll own two of the most technically challenging and impactful areas of the product: AI-driven matching and social graphs, and multi-channel AI agent experiences.
This is a ground-floor opportunity with significant equity upside at a company solving a genuine human problem — loneliness among Gen Z — at growing scale across US university campuses.
No visa sponsorship is available. Candidates must be eligible to work in the United States without employer sponsorship.
What You'll Do
AI Matching & Social Graphs
Design and build a novel social graph derived from real-world interaction data, processing millions of data points
Develop collaborative filtering, graph embeddings, and ranking systems to match people into highly compatible groups
Apply reinforcement learning from real-world outcomes to continuously improve personalization
Discover patterns in interaction data that correlate with meaningful, lasting friendships
Multi-Channel AI Agent Experiences
Architect and build agent workflows that operate natively across messaging platforms (Instagram, iMessage, WhatsApp, TikTok, and others)
Integrate and orchestrate multiple AI agents, third-party APIs, and the data layer into a seamless user experience
Design scalable, production-grade infrastructure to support AI workloads and multi-channel agent orchestration
Craft human-AI interactions that feel natural, reliable, and effortless at scale
What We're Looking For
Required
Up to 4 years of hands-on experience building AI/ML systems in production (quality of experience matters more than tenure)
Proven experience with large-scale AI/ML for matching or personalization — collaborative filtering, graph-based representations, embeddings, and ranking
Experience deploying reinforcement learning models from real-world feedback signals
Hands-on experience designing and implementing multi-channel agent experiences with API orchestration across social/messaging platforms
Proficiency in production-grade software engineering: distributed systems, scalable data pipelines, cloud infrastructure (AWS, GCP, or Azure)
Strong cross-functional collaboration and communication skills — comfortable working closely with product, design, and data science
Founding mindset: you ship fast, own problems end-to-end, and thrive in ambiguity
Must be eligible to work in the United States without visa sponsorship
Nice to Have
Prior experience with recommendation systems, social graphs, or large-scale personalization platforms
Familiarity with multi-agent orchestration frameworks
Experience at an early-stage startup or in a founding engineer capacity
Compensation & Benefits
Salary: $150,000 – $200,000 per year
Equity: Meaningful founding-level equity
Early-stage company with significant upside potential
Location
This is a fully on-site role based in San Francisco, California. The team works together in person — no remote or hybrid option.
Founding Engineer Jobs by Experience Level
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Find Founding Engineer JobsFounding Engineer Job Market
Who's Hiring
- CLERA20
- David Joseph & Company15
- Career Launch11
- URun5
- Smart Apply Test Company5S
Top Industries Hiring
- Technology & Software11
- Gaming & Esports1
- Science & Research1
- Hospitality & Tourism1
- Media & Entertainment1
What Employers Look For
The qualifications that appear most often in founding engineer jobs.
- 3+ years of professional software engineering experience with full-stack or backend depth
- Demonstrated ability to ship production systems with minimal oversight or team support
- Proficiency in at least one modern backend language such as Python, Go, TypeScript, or Rust
- Experience designing and owning cloud infrastructure on AWS, GCP, or Azure
- Comfort operating across the stack including APIs, databases, and frontend surfaces
- Prior experience at a startup, as a technical co-founder, or in a seed- to early-stage environment
Tips for Your Founding Engineer Job Search
Show your zero-to-one build history
Founding engineer roles reward candidates who can demonstrate they have built something from scratch, not just maintained an existing codebase. Your resume should name the product, the stage it was at when you joined, and the technical decisions you owned.
Highlight decisions, not just deliverables
Hiring teams at early-stage companies care more about your architectural judgment than your ticket count. For each role on your resume, call out one or two technical choices you made and the tradeoffs you weighed, not just what shipped.
Target companies by headcount and funding stage
Founding engineer openings at seed-stage companies expect you to set technical direction alone, while Series A and B roles usually mean joining a two- to five-person team. Filter by stage so you apply to environments that match how you want to work.
Apply early to roles that fit
Migrate Mate lists founding engineer openings from across the United States in one place, so you can find roles that match and apply directly to each listing.
Prepare a system design answer using your own work
Early-stage companies skip generic system design prompts and ask you to walk through something you have actually built. Before your interview, prepare a tight ten-minute explanation of one past system, its constraints, and what you would do differently now.
Negotiate equity terms alongside the offer
Compensation at founding-engineer level often includes a meaningful equity stake, and the cliff, vesting schedule, and option type matter as much as the grant size. Ask for the cap table, the last 409A valuation, and the strike price before you accept.
Founding Engineer Jobs: Frequently Asked Questions
Which companies are hiring the most founding engineers?
The companies hiring the most founding engineers right now include CLERA, David Joseph & Company, and Career Launch, with the largest share of openings in California, New York, and Texas, based on current listings on Migrate Mate as of August 2026. Demand is concentrated at seed- and Series A-stage startups building in fintech, healthtech, and developer tooling.
How many founding engineer jobs are remote?
About 42% of founding engineer openings are fully remote or hybrid as of August 2026, making it one of the more location-flexible senior technical roles available. Backend-focused and infrastructure-heavy positions tend to have the highest remote share, while roles that require close collaboration with a founding design or product team are more often in-person.
How do you become a founding engineer?
Becoming a founding engineer typically means building a record of shipping production systems independently, making architectural decisions under ambiguity, and working at an early-stage company or in a zero-to-one capacity at a larger one. Most people arrive through a combination of startup experience, strong open-source contributions, or a role that gave them ownership of a product surface from the ground up.
Can you get hired as a founding engineer with little experience?
Some early-stage founders hire engineers with limited professional experience if they can show they have built and shipped something real, whether a side project, an open-source tool, or a contract product. The practical path is to have something running in production you can walk through in detail, because founding engineer interviews almost always involve explaining a system you owned, not solving abstract puzzles.
What does the founding engineer interview process look like?
The founding engineer interview process usually starts with a founder or CTO conversation about your past work and how you think about building products, followed by a technical deep-dive into a system you have shipped. Many companies skip traditional whiteboard exercises in favor of a take-home or pair-programming session, and the final stage almost always involves a discussion about equity, company direction, and how you would approach the first months on the job.
Where can I find and apply to founding engineer jobs?
You can find and apply to founding engineer jobs on Migrate Mate, which lists current openings from companies across the United States. Search the listings to find roles that match your background and preferred stage, then apply directly to each one that fits.
See All 156+ Founding Engineer Jobs
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Find Founding Engineer Jobs