Gniewko Kościelak, Poland
From the first screen to a URL that works.
Aesthetix, Product Shapers, Maria & Daria — physique app, Shape Up practice, Warsaw acting roster. Built alone, still mine when something breaks.
Aesthetix
Two photos become a scored physique report — muscle groups, symmetry, V-taper, body fat — then a coach and a history that tracks the next scan against the last.
Case study
Product Shapers
The production site for Dawid Szkiełka's Shape Up practice — offer, case studies, training, and a CMS the content team can run without a deploy.
Case study
Maria & Daria
A Warsaw acting-agency roster — actresses, actors, and foreign talent — with full profiles, galleries, and a contact path for casting.
Case studyI build the whole product alone — the interface, the backend, the CMS, the AI pipeline, and the box it deploys to.
Aesthetix turns two phone photos into a scored physique report and a coach. Product Shapers is Dawid Szkiełka’s Shape Up practice, on a CMS his content team can run. Maria & Daria is a live Warsaw acting roster — profiles, galleries, casting inquiries — built to stay fast as the photo library grows.
I stay with the parts that only show up once something is live: a key that shipped in an app bundle, a session cookie that breaks across two domains, a hero rotation that Firefox couldn’t hold. The interesting work is usually the last 10%.