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obsessixnv/README.md
Roman Yankovych — Forward Deployed Engineer at Elcano

Ostinato Rigore

Correspondence Atelier Beholders

⚜  ·  ❧  ·  ✦  ·  ❧  ·  ⚜

❧ Ex Libris

Ostinato rigore"stubborn rigor."
— Leonardo da Vinci's personal maxim.

I'm a Forward Deployed Engineer at Elcano, working in the old Renaissance manner — part engineer, part craftsman — building agentic AI systems with stubborn rigor and a taste for elegant proportion.

I sit close to the problem. I translate messy requirements into clean architecture, useful automation, and software that ships, gets watched, and gets better with real feedback — engineering, product thinking, and applied AI worked on the same bench. Our agent Victoria does the dense work; I compose the systems around her.

⚜  ·  ❧  ·  ✦  ·  ❧  ·  ⚜

❦ The Commissions — what I make

  •   Agentic workflows & LLM systems — autonomous crews that take a task from intent to outcome, end to end.
  •   Data pipelines & integrations — the quiet plumbing that moves data reliably to where it's needed.
  •   Production backend & tooling — adtech products, operational instruments, growth-focused systems.
  •   Rapid prototyping — sketch, validate, harden, deploy — at studio speed.
  •   Ambiguity → software — turning fog and rumor into a reliable, finished work.
⚜  ·  ❧  ·  ✦  ·  ❧  ·  ⚜

✦ The Atelier — instruments & pigments

Languages & Frameworks

Go Python TypeScript JavaScript React Next.js Vite React Native Chi Router

Oracles — models consulted

OpenAI Claude Gemini Kimi

AI & Automation

Model Context Protocol Agentic Workflows LLM Tool Calling Prompt Engineering OpenRouter Multi Model Fallbacks YAML Protocol Design httpx pytest Data Pipelines

Platforms & APIs — programmatic AdTech

Index Exchange OpenX Magnite Xandr TripleLift Media.net PubMatic Adverity

Design, Tools & Infrastructure

Design Systems Design Tokens Figma Storybook MUI HTML Email Accessibility Docker Caddy Git Claude Code

⚜  ·  ❧  ·  ✦  ·  ❧  ·  ⚜

✺ Marginalia

❧  Ostinato rigore
"Stubborn rigor." Leonardo da Vinci's personal motto — the conviction that mastery is won by relentless, patient discipline. It's how I like to build: not clever once, but right, and rigorous, and finished.
❦  On the name "Elcano"
Juan Sebastián Elcano completed the first circumnavigation of the globe in 1522. Emperor Charles V granted him a coat of arms bearing a globe and the words Primus circumdedisti me"you were the first to encircle me." We build in that spirit: finish what others only begin. Our agent Victoria takes her name from his ship.
✦  Nulla dies sine linea
"No day without a line." The maxim of Apelles, the great painter of antiquity, who let no day pass without drawing at least one line — revived by the Renaissance as the creed of daily practice. Ship something every day; the work compounds.
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❖ The Codex — by the numbers

Stars, commits, pull requests, issues and repositories Most used languages by share
Total contributions, current streak and longest streak
Nulla dies sine linea — contributions over the last 30 days
Struck fresh each day from the GitHub API — see scripts/render_cards.py.
⚜  ·  ❧  ·  ✦  ·  ❧  ·  ⚜

❧ Correspondence

If you're building with AI, automation, data, or full-stack — I'm always glad of a worthy commission.

Email GitHub

Festina lente — Ars longa, vita brevis

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