Summary
✨ AI‑Generated
Take founding-level ownership of a new digital product, shaping how it looks, feels, and works from the first prototype through daily user interactions. You will combine product design and hands-on engineering across web and iOS, using TypeScript, React, Next.js, and SwiftUI. This is an onsite opportunity suited to someone who enjoys broad ownership, rapid prototyping, and building products from the ground up.
Highlights
Own the product experience end to end in a founding engineering role, from early prototypes to polished everyday interactions. Work across web and iOS while combining product design with hands-on implementation and substantial ownership in an early-stage environment.
Description
This is a role that TechTree is recruiting for on behalf of one of our clients.
TechTree is an AI-driven recruitment platform working with high-growth companies.
When you apply, our AI Agent matches you not just to this role, but to other relevant opportunities across our network, so one application can unlock multiple roles.
Founding Design Engineer — shape how Boski looks, feels, and works, then build it yourself.
On-site, Warsaw.
Boski is an AI agent that wants you to win: it gets all the mundane stuff done — groceries, doctor appointments, even finding you a new job — so you can live your best life.
By 2027, everyone will have a personal AGI working for them, and Boski is building it.
Founded by a repeat founder who sold his last company to Farcaster, the team is now building out its founding group in Warsaw.
You'll own the product experience end to end — from the first prototype to the details people use every day — across web (TypeScript, React, Next.js) and iOS (SwiftUI).
What You'll Do
→ Own how Boski looks, feels, and works across web and iOS
→ Prototype interactions in code, test them with users, and ship improvements quickly
→ Take features from early sketches through production, including the engineering to make them work
→ Build reusable components and evolve the design system as the product grows
What We're Looking For
→ Exceptional product taste and engineering ability, with shipped products that prove both
→ Deep care about typography, motion, and interaction details, with a bias for speed over process
$100k–$120k cash, 2% equity, paid lunches, and a gym pass two minutes from the office.
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 — answering questions, adding context, and making sure you're never left guessing or ghosted.
We only post real jobs.
Every role on TechTree is a live, active hire.
