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DANYLO HRYTSENKO
FRONTEND ENGINEER
[open contact info](look above in the "contact info" section) | [open contact info](look above in the "contact info" section) | t.me/cloudmenson | [open contact info](look above in the "contact info" section)
Ukraine | English – A2+ | Ukrainian – native

Summary
Frontend Engineer with 4 years of experience, mostly in iGaming: crypto casino games, real-time betting features and high-traffic
platforms. Also shipped a B2B SaaS product and an enterprise browser extension. Strong in Next.js, React and TypeScript, web
performance and real-time UIs (WebSockets).

Skills
Languages: TypeScript, JavaScript, HTML5, CSS3, SCSS
Frontend: React, Next.js, Svelte, TanStack Query, Zustand, Redux, MobX, React Hook Form, Zod, Tailwind CSS, SCSS Modules,
shadcn/ui, Radix UI, Framer Motion, GSAP, Recharts, Storybook
Real-time & Performance: WebSockets, Socket.IO, REST API, Core Web Vitals, code splitting, bundle analysis, CDN image
optimization (AVIF/WebP)
Backend (familiar): Node.js, NestJS, Prisma, PostgreSQL, Redis, MongoDB, Supabase
Build & Tools: Git, GitLab, GitHub, Turbopack, Vite, Webpack, Docker, ESLint, Prettier, Husky
Architecture: Monorepo, Feature-Sliced Design (FSD), feature flags, Chrome Extension (Manifest V3)
Integrations: Stripe, Firebase, OpenAI API
Domain: iGaming, crypto casino, provably fair, real-time betting
AI Tools: Claude Code, GitHub Copilot, ChatGPT, Gemini

Experience
Middle Frontend Engineer — NDA: Crypto Casino 05/2026 – 09/2026
Crypto casino platform: in-house games, live betting feed, rewards.
Next.js, React, TypeScript, TanStack Query, Zustand, Socket.IO, Framer Motion, SCSS Modules
• Built 3 casino games from scratch (video poker, coin flip, multiplayer chest battles) and took a chest opening game from v1.0 to
launch: game logic, animation, audio, provably fair verification, server-side round recovery
• Worked across all in-house games (crash, plinko, roulette, blackjack, mines and more); built a shared game player (theater mode,
multi-window mini player, multi-slot view) and turbo mode for 11 games
• Led frontend performance work: code-split heavy modules, CDN image delivery (AVIF/WebP), banner animation −86%, fonts
−65%, ~40 MB of unused assets removed, layout shift (CLS) eliminated across key UI
• Made real-time features resilient: live bets feed under heavy traffic with reconnect recovery, server-synced crash timing
• Shipped Raffles, Daily Chests and a Live Stats window with a custom SVG chart; feature and environment flags for hidden
releases across 3 environments
Middle Frontend Developer — Viso Software 10/2025 – 04/2026
Dotify — B2B SaaS platform connecting buyers and sellers through AI-powered discovery and lead generation.
Next.js 15, React 19, TypeScript, TanStack Query, Zustand, Tailwind CSS, Socket.IO | Monorepo: NestJS + Prisma + PostgreSQL
• Built core AI-driven features (GenMatch, GenView, GenStack) for intelligent software discovery and evaluation
• Integrated a real-time notification system (Dotifications) using WebSockets for seller activity tracking
• Contributed to the backend in a shared monorepo (NestJS endpoints, Prisma migrations, DTOs); launched the product in March
2026 and led post-release optimization
Password Depot — Browser extension for an enterprise password manager (100K+ users: Telekom, DHL, Allianz).
JavaScript, Chrome Extension (Manifest V3), DOM API
• Engineered a field detection system that improved autofill accuracy across diverse websites (German market)
• Refactored the legacy codebase and optimized DOM scripts for reliable, fast credential capture and sync
Frontend Developer — NDA: iGaming 10/2023 – 09/2025
Large-scale multi-module iGaming platform: Admin Panel, Partner Dashboard, Game Client, Betting System and a shared Storybook
component library. Also contributed to a secondary iGaming streaming platform (6 months).
React, TypeScript, Redux, Storybook, REST API
• Developed 5+ platform modules with complex interactive components: payment systems, game widgets, forms and reusable UI
elements
• Implemented cross-module Redux state management and a shared Storybook UI library
• Optimized rendering performance for data-heavy views across desktop and mobile
Frontend Developer (Volunteer) — Hillel IT School · Kids Exchange Platform 03/2022 – 09/2023
Kids exchange platform: responsive UI, reusable components, API integration, mentoring, code reviews.

Education
Dnipro National University of Science and Technology — Master's, Management of Energy and Economic 2019 – 2024
Processes