A decade across frontend, backend and game clients.

Where we are now: core engineering on a next-generation HTML5 client that slot games are built on for the iGaming industry — a 60+ package TypeScript monorepo on Phaser, with the spin lifecycle modeled as XState statecharts and animation driven by GSAP and Spine. Alongside it: high-load React CRM and analytics platforms, Node.js / NestJS microservices, and AI agent tooling (Claude) for game math and for modeling causality in financial news. Domain: regulated real-money gaming, high concurrency, certification. Some work from this period is under NDA.

Product engineering across high-trust domains. On signNow we worked full-stack on an e-signature SaaS — React / Redux over Node.js / HapiJS service aggregation. For Alfa-Bank's online-banking platform for entrepreneurs we built a multilingual, reliability-first React frontend. In parallel we mentored engineers through an advanced React client-applications course. Domain: e-signature workflows, online banking, secure document handling.

Web and mobile in parallel: SSR React e-commerce frontends over queue-backed PHP back-ends, an internal ERP, a React Native driver app, and an iOS / Android video Q&A app on Apollo / GraphQL. Domain: e-commerce, mobile, GraphQL APIs, and shipping one product to many platforms.

Where we cut our teeth: full-stack work on MOYO, one of Ukraine's larger e-commerce platforms — PHP / Yii, Redis, MySQL and Elasticsearch under real traffic. High-load thinking, caching and search at scale became second nature here, alongside other client projects under NDA.