I build thoughtful software with AI, taste and shipped product sense.
I am Konrad Roj, a product engineer and founder from Gdańsk. I have led iOS work for consumer products, built AI-native tools and keep using this site as a small lab for projects I care about.
AI products
I like building AI into real product loops: research tools, creative systems and personal software that gets better with use.
Mobile apps
Most of my career has been close to the phone: iOS craft, product detail, performance and high-polish consumer experiences.
Founder projects
I prototype, ship and learn in public through small products, tools and experiments around education, productivity and personal software.
Production engineering
I care about the unglamorous parts too: data models, reliability, auth, deployment, observability and keeping software maintainable.
Podsumi
A market-signal and trend intelligence product for understanding what creators and audiences are moving toward.
Project Verdant
A gardening companion with planning, tasks and AI-assisted seasonal guidance.
Project Hippocrates
A medical learning quiz app focused on structured practice and generated question flows.
Project Hyperion
A small browser game experiment built around procedural systems, feel and iteration speed.
Product taste plus engineering depth.
- Delivered mobile systems used by millions of users.
- Lead iOS at Opal, Apple Design Awards 2025 Finalist team.
- Founder of Podsumi, a live market-signal product.
- Former Lead iOS at Dispo, Senior iOS / Tech Lead at Skyrise.
This site is my corner of the internet.
I use it to collect things I am building, experiments I am exploring and the occasional note about product, AI and software craft.