Danylo

Danylo Kholodnyi
Web3 Developer · Smart Contracts / Backend / MEV
Remote · Georgia · GMT+4 · Telegram: @danil_kho · LinkedIn: danylo-kholodnyi · GitHub: hiddenway

PROFILE TECHNICAL SKILLS
Hands-on Web3 engineer with 6+ years in smart contracts and high-load backends across Smart Contracts
Solana, EVM networks, and WAX / EOS. I ship on-chain products end-to-end — contracts Solana · Anchor · Rust · SPL Token · Solidity ·
(Rust / Anchor, Solidity), indexing and trading backends, and low-latency MEV ERC-20 / ERC-721 · Hardhat · Foundry · AMM
infrastructure on Solana (Jito, ShredStream, Geyser). Contributed to products with $20M+ / DEX · Oracles (Pyth / Chainlink) · WAX /
aggregate on-chain and trading volume. EOSIO
MEV & Low-Latency Infra
EXPERIENCE Jito bundles · ShredStream · Geyser · priority
Smart Contract & Backend Engineer 2025 – Present fees · wallet / mempool analytics ·
Contract Web3 development · Solana & EVM networks copy-trading detection · Rust execution bots ·
RPC infrastructure
• Custom smart contracts on Solana (Anchor / Rust) and EVM (Solidity): token launches,
bonding curves, trading flows, and DEX integrations (Raydium CPMM via CPI). Backend & Data
• Building a Solana MEV stack: on-chain detection of leader–follower (copy-trading) Node.js · NestJS · Python · Django ·
PostgreSQL · Redis · RabbitMQ · WebSockets
wallet relationships, wallet analytics, and a Rust execution bot on Jito bundles with
ShredStream / Geyser data feeds and dedicated RPC infrastructure. Frontend & dApp
• Full delivery cycle: architecture → contracts → tests → audit-style review → React · TypeScript · Next.js · ethers.js · wagmi
/ viem · WalletConnect
deployment → backend / frontend integration. Top 10 Web3 developer on
Freelancehunt.com. DevOps
Docker · CI/CD · GitHub Actions · Prometheus
Technical Lead / CTO 2024 – 2025 · Grafana
AlphaLayer · Game production for a telecommunications client
• Built the production pipeline, CI and QA practices that shipped 50+ games in ~6 HIGHLIGHTS
months; led a cross-functional team of up to 30 people. • $20M+ aggregate on-chain volume across
shipped products
CTO & Backend Architect 2023 – 2024
• ~$16M turnover P2E launch on WAX /
YOLO · High-load P2P exchange platform
Polygon
• Designed high-throughput exchange flows: offers, deals, partner integrations, and • Top 10 Web3 developer on
transaction state handling.
Freelancehunt.com
• Backend on Node.js / NestJS with PostgreSQL, Redis, and RabbitMQ; owned • Open source: Kovalsky (TS agent
architecture, code review, and planning for a team of 6. orchestration), RelayCore
CTO / Smart Contract Engineer 2021 – 2023 LANGUAGES
OnlySpace / War Space · Web3 gaming and blockchain products
Russian — Native
• Built and integrated smart contracts for a P2E game on WAX (EOS), later expanded to
Ukrainian — Native
Polygon; the launch reached ~$16M in turnover.
English — B1
• Led delivery of blockchain services across contracts, backend, and deployment;
introduced Git workflows, CI/CD, and infrastructure monitoring.

Full-Stack Developer 2016 – 2021
Freelance · CodeCanyon, Freelancehunt, Google Play
• Built and sold PHP engines (search engine, social network, file hosting) on
CodeCanyon; delivered Unity games and custom PHP websites.
• Moved into smart-contract development in 2019 — the start of the transition into Web3.