What are the responsibilities and job description for the Product Engineer | Multiple openings at startups where your code ships to users — not a backlog position at TechTree?
At TechTree, we match exceptional talent with the startups building the next wave of intelligent software and more. And right now, our pipeline is full.
One application. We match you to the role that fits your background, language skills, and ambitions.
The best startups don't separate engineering from product thinking. They hire people who blur the line on purpose. Here's what our partners are actually building.
→ One startup is building AI-powered tools that save businesses and the public billions in waste — their first product designer joins a founding team with zero red tape and direct access to customers from day one
→ Another is deploying agent-based AI systems directly into hospitals and clinics — automating GP-level diagnosis and building infrastructure that handles real-time triage, voice, and video at clinical accuracy
→ A third is building real-time AI infrastructure for the legal and financial sector — small team, massive ambition, Series A runway
What Product Engineering Roles Pay Right Now
→ Product Engineer (Warsaw/Remote) — PLN 180k–300k equity
→ Full-Stack Engineer (London, on-site) — £100k–£175k equity
→ Founding Engineer (London, Series A) — £150k–£170k equity
→ Lead Engineer (US, Remote) — $250k–$315k equity
→ Full Stack Engineer (Warsaw, Seed) — $75k–$150k equity
What The Roles Look Like
→ React / Next.js
→ Direct collaboration with founders — no tickets, no layers
→ Ship weekly, not quarterly
📍 Warsaw | Remote | London | San Francisco
What is TechTree?
TechTree combines AI agents with a human support team to give candidates a better, more transparent hiring experience.
Our AI Agent gets to know your background, experience, and what you're optimising for. It continuously matches you to live roles across our network where there's genuine alignment, not just keyword overlap.
Our Human Team is there to support you through the process:
If you apply: you'll be considered for this role, you may also be matched to other relevant roles, and if there's no fit, we won't spam you.
One application. We match you to the role that fits your background, language skills, and ambitions.
The best startups don't separate engineering from product thinking. They hire people who blur the line on purpose. Here's what our partners are actually building.
→ One startup is building AI-powered tools that save businesses and the public billions in waste — their first product designer joins a founding team with zero red tape and direct access to customers from day one
→ Another is deploying agent-based AI systems directly into hospitals and clinics — automating GP-level diagnosis and building infrastructure that handles real-time triage, voice, and video at clinical accuracy
→ A third is building real-time AI infrastructure for the legal and financial sector — small team, massive ambition, Series A runway
What Product Engineering Roles Pay Right Now
→ Product Engineer (Warsaw/Remote) — PLN 180k–300k equity
→ Full-Stack Engineer (London, on-site) — £100k–£175k equity
→ Founding Engineer (London, Series A) — £150k–£170k equity
→ Lead Engineer (US, Remote) — $250k–$315k equity
→ Full Stack Engineer (Warsaw, Seed) — $75k–$150k equity
What The Roles Look Like
→ React / Next.js
- TypeScript
- Python (FastAPI / Django)
- PostgreSQL
→ Direct collaboration with founders — no tickets, no layers
→ Ship weekly, not quarterly
📍 Warsaw | Remote | London | San Francisco
What is TechTree?
TechTree combines AI agents with a human support team to give candidates a better, more transparent hiring experience.
Our AI Agent gets to know your background, experience, and what you're optimising for. It continuously matches you to live roles across our network where there's genuine alignment, not just keyword overlap.
Our Human Team is there to support you through the process:
- Answer questions about roles, process, and next steps
- Add context when something in your background isn't obvious
- Help unblock stalled processes or unclear feedback
- Make sure you're not left guessing, ghosted, or wasting time
If you apply: you'll be considered for this role, you may also be matched to other relevant roles, and if there's no fit, we won't spam you.
Salary : $75,000 - $315,000