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Mykyta Vasyliev

@mykytavasyliev

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Software engineer across full-stack, design and agentic AI systems. TypeScript, React, Node.js and PostgreSQL.

Ukraine

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What I'm looking for

A senior or lead seat on a product I can stay with, owning a real area rather than a ticket queue.

Most of my work is on dense product surfaces in React and TypeScript, with Node, Express and PostgreSQL behind them. I design the UI and then build it. I also work AI-natively, and most of that is verification around generated output.

I build product software, and I design it too.

Most of my work has been on dense product surfaces: consoles and dashboards where a lot of state has to stay legible on one screen, and where the hard part is making something complicated feel simple. React and TypeScript on the client, Node, Express and PostgreSQL behind it.

I have usually been the only person minding design on the products I work on. A styleguide arrives, the designer moves on, and the rest is mine. That means the interface, the design system and the motion, and then building what I designed.

I also work AI-natively. Most of that turns out to be verification, so I build the gates: automated compliance checks, deterministic validators and headless browser QA. Generated output has to be provably correct before it ships.

Experience

Work history, roles, and key accomplishments

Software Engineer

CrazyLabs / TabTale

Nov 2020 - Jun 2026 (5 years 7 months)

Core engineer for 5.5 years on CLOK, a customer-facing live-ops and analytics platform shipped to game studios. Owned the experiment lifecycle, apply-winner rollouts, Groups and Region editors, user management and multi-version configs. Sole design owner throughout. AI-native in production from 2022. Shipped a solo AI playable-ad pipeline: 13 tools, headless QA, a 12-point compliance gate.

React TypeScript Redux Saga Jest React Testing Library Cypress Playwright Vite Firebase A B Testing Session Based Configuration GuardRails Compliance DTO Validation Performance Optimization Debouncing Memoization

Mobile / TypeScript Developer

GlobalLogic

May 2020 - Sep 2020 (4 months)

Built the React Native and TypeScript UI for a smart-home app for a major German provider: buy, connect and manage devices from one dashboard. Wrote the animation and micro-interaction, and the API integration behind them.

React Native TypeScript UI Development Animation API Integration

Developer (Web / Mobile / Backend)

Blackbell

Mar 2018 - Feb 2020 (1 year 11 months)

Built and maintained a full CMS and admin application, plus the in-app page editor B2B customers designed their own pages with. Shaped architecture across web, mobile and backend, and reviewed code.

JavaScript CMS Admin System Architecture Code Review

JavaScript Developer

Syndicode

Sep 2017 - Jan 2018 (4 months)

Built two client products: a real-time collaborative app for Dota 2 teams with a shared board, chat and freehand drawing, and a hotel-booking platform with calendars, accounts and booking flows.

JavaScript Web Application Development Chat and Drawing Tools Booking Flows Refactoring