Yauhen Massalski and a Nantes teammate hold a whiteboard: a basketball play whose line climbs into a stock chart
Operator · Two ways

Pro athlete. Operator. Same person.

I play pro basketball in France for Nantes Basket Hermine. I also find the money brands are losing inside their own numbers — including whether AI can see them at all.

On the court First Team All-WCC. NBA Summer League with Utah and San Antonio.
Off it Found one in six orders cancelling within 16 hours — hidden inside a “returns” line.
Both at once Elected Secretary-Treasurer of the G-League players union. Negotiated the league's first CBA.
currently playing · Nantes Basket Hermine Court → Codebase 2026
Belarus· Lithuania· United States· France· 3+ businesses while playing pro

Belarus → France.
The path.

  • 2013Left Minsk alone at 13 to train in Vilnius.
  • 2014Pro contract at 15 with BC Lietuvos Rytas.
  • 2017 — 2022San Diego, then USF. First Team All-WCC. Three knee surgeries.
  • 2023 — 2025Utah, Austin Spurs, a Spurs Summer League, a full year with the San Diego Clippers.
  • NowPro in France with Nantes Basket Hermine. Building the rest between practices.

Same person,
on your problem.

I find the money a brand is losing inside its own numbers, then build the fix: the site, the content system, the ad pipeline. Right now that is a creative agency in Poland and my own two stores.

  • LiveRancho Roofing: a new site and a lead form that reaches the inbox. Case below.
  • Own storesGMMY and YUMM, two D2C brands I co-founded and still run.
  • FoundOne in six orders cancelling within 16 hours, hidden inside a “returns” line.

The build, the cost,
the receipt.

Long videos on the AI side. Shorts on YouTube and TikTok. Basketball on its own accounts. Pick a tab.

The written breakdowns.

The tests, the screenshots, and what actually happened.

My AI needs to know where I stand

I told Claude to grill me about business, basketball and life. I want it to know my answers and help me speak with less water.

First, it needs to know how I talk

I’m building my second brain from my own words, notes and decisions. Before adding more, I start with the voice library.

I gave my keyboard a pet while I was supposed to be learning HTML

I found AgentPet during an HTML lesson, put a Rick and Morty GIF on my keyboard screen, tested its lights, and carried the project from Claude to Codex.

Ventures
in motion.

Real products with real revenue. The receipts behind the videos.

01D2C brands · founded summer 2025

GMMY + YUMM

Co-founded GMMY, a D2C vitamin brand powered by AI-driven TikTok marketing — intelligent automation to scale content, test creatives, optimize subscription flows. YUMM followed shortly after on the same playbook for pet wellness. Both live, both running.

Founded summer 2025
AI bot cut costs 97%
TikTok-first growth
Subscription model
02Building software · sept 2025+

Vibe-coding

Started shipping software in September 2025 — Remotion video pipelines, content automation, internal tools, AI agents that actually run. Two YouTubes and two TikToks a week documenting what works and what doesn't, with the prompts and configs attached.

Watch the build
Started Sept 2025
Remotion · Claude · Gemini
4 videos / week
03For hire

Consulting + creative

TikTok growth strategies and content systems that run without you. From Remotion pipelines to n8n workflows, I help brands scale without scaling headcount. Currently partnering with a creative agency in Poland and taking a small handful of D2C clients at a time.

Work with me
TikTok algorithm
AI automation
D2C playbook

When I ship something,
you get the receipt.

Build, cost, files I used. Maybe twice a month. Unsubscribe in one click. No spam, no funnel, no upsell.

~2 sends/mo · GDPR-clean · zero spam