Patrik Levák
Product engineer and designer · Netherlands
I design and build thoughtful software for real people.
I'm a product engineer based between Leiden and Amsterdam, with a BSc in Data Science & AI from Leiden University.
My main work is Loadline: an iOS strength training app with 1,849 registered users and a web app that reached 8,938 visitors and 25,829 page views over the past 12 months. I take it from product decisions and interface design through native integrations, backend systems, subscriptions, and production releases.
I care about calm interfaces, exact interactions, and software that holds up outside a demo. I'm currently looking for a full-time product, mobile, or frontend engineering role in the Randstad.
Selected work
Loadline for iOSAn offline-first strength training app designed and built end to end.React Native · Expo · Swift · SupabaseLive · 1,849 registered usersLoadline WebA client-side analytics dashboard built around Hevy workout history.React · TypeScript · Vite · Hevy API8,938 visitors · 25,829 page viewsExpo Watch ConnectivityA native Expo module that exposes Apple WatchConnectivity to React Native through a typed API.Expo Modules API · TypeScript · SwiftOpen sourceNumax HealthA preventive health membership that helps people understand their lab results and see whether their plan is working.React Native · Expo · Next.js · Product designWorking product prototype
What I do
- Product engineering
- From an ambiguous idea to a product people can use.React · TypeScript · Supabase
- Mobile apps
- Native-feeling iOS and Android products, shipped to stores.React Native · Expo · Swift
- Interface design
- Quiet, precise systems with strong interaction detail.Figma · Prototyping · Design systems
- Applied AI
- Useful AI features grounded in real product constraints.Python · ML · Data science
In short
- Based in
- Leiden / Amsterdam
- Focus
- Product · Mobile · Frontend
- Work eligibility
- EU citizen · No sponsorship needed
- Languages
- English C2 · Slovak native · Dutch basic
- Availability
- 32 to 40 hours · Full-time preferred
- Education
- BSc Data Science & AI · Leiden University