Hey, I'm Radosław
Frontend engineer and programming coach. I take products from empty repo to production, infrastructure included.
/ RADOSŁAW SIEK · PORTFOLIO · 2026
I build interfaces that make complex workfeel simple.
Frontend engineer and programming coach. Now building AI-native products at Booksy.
CURRENT ROLE
AI Native Software Engineering · Booksy
Next.js · TypeScript · AI
- 5
- production systems
- 1.6
- years of experience
- 200+
- students taught
- 2+
- years teaching
Giganci ProgramowaniaJointhubsHued.meBooksyGiganci ProgramowaniaJointhubsHued.meBooksy
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Selected work
Three systems, three different problems
Architecture, a data application, and an AI interface — each one argues something the other two do not.
architecture
MB Group Multisite
Sole frontend owner · Hued.me · 2026
Four brands and six domains needed separate sites without four separate codebases.
- Next.js
- TypeScript
- Umbraco
- Azure
- +2
case study for MB Group Multisite
Client work — details on request
data application
Debt Exchange
Four key features · Hued.me · 2025
A financial marketplace with nine sortable columns had to live inside a CMS-editable page.
- Next.js
- TypeScript
- React
- Umbraco
- +1
ai & real-time
BRAIN
UI & chat experience · Hued.me · 2026
Business users needed to query a production database without knowing SQL, and to trust the answer.
- Next.js
- TypeScript
- OpenAI API
- Streaming
- +1
case study for BRAIN
Internal platform — no public URL
Side project
Built for the one user I could interview any time
The only project on this page where I was also the user.
Hivewise
Everything — design, backend, voice flow
Inspecting a hive occupies both hands. There are gloves, a smoker, frames that weigh several kilos, and bees. Records get written from memory hours later, or not at all.
A spoken, guided inspection: the app reads each step aloud, the beekeeper answers, and speech is parsed into a structured record. A Python microservice renders the completed inspection as a PDF and writes it to the beekeeper’s own storage.
Queen sighted?
“Yes, and there’s fresh brood”
queen_sighted: true, brood: fresh
Frames of stores?
“Four and a half, mostly capped”
stores_frames: 4.5, capped: true
Temperament?
“Calm, no runners”
temperament: calm
Varroa board?
“Twelve mites over three days”
varroa_drop: 12, days: 3
- Python
- FastAPI
- Whisper
- PDF microservice
case study for Hivewise
Internal platform — no public URL