The founding engineer roles worth having aren't on ZipRecruiter. They go to engineers who were already visible before the founder started searching. Underdog.io is a closed, invite-only network where seed and pre-seed startups reach out to you directly — salary, equity, and stage included upfront. No applications. No noise.
The role
Job boards make every founding engineer role sound the same: "fast-paced environment, wear many hats, equity upside." Here's what the role actually looks like when the company is real and the equity is worth something.
If you want real ownership over real decisions at a company that's small enough for your work to matter immediately — founding engineer is the highest-leverage role in tech.
It's also one of the hardest to find through a job board. The best ones go through networks.
Founding roles in the network
Tell us your stack, what kind of product you want to work on, and your preferred stage and location. We match you to a founder whose specific problem fits your specific background.
React/Next.js + Node.js or Python. Ships end-to-end. Owns the product surface. This is the universal seed-stage hire — the engineer who can build whatever needs building without waiting for a specialist.
LLM integration, RAG pipelines, evaluation frameworks, applied ML in production. AI-native startups where the model layer is the product — the founding engineer who designs it shapes the entire company's technical direction.
API design, infrastructure, data architecture, performance. Founding engineers who can build the backend that everything else runs on — Go, Python, Node — and make the architectural choices that scale.
Engineers who sit at the intersection of engineering and product — strong on React/TypeScript, care about UX, and treat the product's quality as their own responsibility. Consumer and B2B SaaS startups at seed.
Swift, Kotlin, or React Native. Founding engineers who have shipped mobile apps to real users — not just side projects — and can own the entire mobile surface of an early-stage product.
Pre-product, pre-seed, sometimes pre-funding. The absolute first technical hire. You're not joining a team — you're founding one. Highest equity, highest ambiguity, and the most compounding learning of any engineering role that exists.
Equity & compensation guide
Every Underdog intro discloses salary and equity upfront — before you spend an hour in anyone's process. Here's how to read what you're looking at.
The equity math to ask for before you sign:
Get the fully diluted share count and current valuation. Then do the math: 0.5% of a $200M exit = $1M before dilution and taxes. 0.5% of a $50M acqui-hire = $250K. Dilution from future rounds typically runs 10–25% per round — factor that in. Founders who won't share the valuation or fully diluted count are signaling the offer is worse than it looks. Good founders share everything.
Base salary ranges at US venture-backed startups. Sources: YC job board 2025, Levels.fyi, RemoteRocketship, Wellfound 2025.
How it works
You're not applying to a job listing. You're joining a network. Here's how the best founding engineer roles actually get filled.
Tell us your stack, your early-stage experience, what kind of product you want to build, and your stage and location preference. Takes 60 seconds. No resume required to start.
We review every profile by hand. Only the top 5% are accepted. When a founder sees your profile, you're a recommendation — not a cold application from a job board. Every conversation starts with real context.
Every Monday, founders at vetted startups contact you directly — salary and equity disclosed upfront. 85% of accepted engineers hear from a company in their first week. You decide who gets your time.
Startups in the network
Seed through Series A. Vetted by us before they reach our network. More than 50% of companies that apply are turned away.
Not all companies actively have a founding engineer opening at all times. We match you when a company's specific needs fit your specific background.
Every time I use Underdog.io I remember that job searching doesn't have to be terrible. Thanks for the product.
Zach B. — Senior Software Engineer
Common questions
The best roles don't get posted
Founders at vetted seed and pre-seed startups come to Underdog for their most important hire. One profile. Equity disclosed upfront. You decide which conversations are worth your time.
Get in front of founders — it's free →