KOSTA ZANIN
Hey, I'm Kosta — a design engineer with 13 years across product design and frontend. I design interfaces and ship them to production myself: React, Next.js, TypeScript, design systems. Currently at OpenVPN CloudConnexa, the world's #1 business VPN, shipping AI features for 4M+ users.
I help companies move to AI-native development: written specs before code, project-tuned agents, and quality gates wired into the pipeline. On my last team that meant six-week features shipped in days by three people. AI-assisted engineering that ships faster — without turning into vibe coding.
Selected Works
How I ship
SPEC-DRIVEN
Every feature starts as a written spec. Design decisions, constraints, and acceptance criteria live in the repo — agents and humans build against the same source of truth.
PROJECT-TUNED AI
Each project gets its own design.md and claude.md: the design system, conventions, and guardrails encoded so AI ships on-brand, on-architecture code — not generic output.
CLAUDE CODE + STORYBOOK
I build with Claude Code against Storybook: components are developed, reviewed, and regression-tested in isolation before they reach a page.
QUALITY GATES
Type checks, lint, visual regression, and a11y checks wired per stack. Speed from AI, quality from the pipeline.