About Roswelly
Rust smart contract & backend developer. I ship production systems for prediction markets, trading infrastructure, performance-sensitive backends, and provably fair Web3 casino game engines on Solana (Anchor) and EVM chains (Polygon, BNB, Avalanche, Ethereum).
What I do
Roswelly is a Rust smart contract and backend developer focused on prediction markets, high-performance trading infrastructure, low-latency backends, and provably fair Web3 casino game engines. He ships production systems on Solana (Anchor) and EVM chains (Polygon, BNB, Avalanche), including on-chain CLOB / AMM logic, MEV and arbitrage bots, Polymarket-style prediction market bots, and game engines with on-chain randomness (Chainlink VRF / verifiable RNG).
Services
Prediction market bots & infrastructure
Polymarket-style trading bots, CLOB integrations, PnL attribution, and risk engines (per-market exposure, max slippage, kill-switch).
Trading infrastructure & low-latency backends
Rust-based sniper, copy-trading and MEV/arbitrage systems with Jupiter v6, Jito bundles, Helius gRPC, Nozomi fallback, Redis, PostgreSQL and Kafka.
Web3 casino game engines
Provably fair on-chain casino engines — coinflip, dice, roulette, crash, lottery, jackpot — with Chainlink VRF / verifiable RNG, NFT rewards and treasury logic.
Core skills
Where to find me
- GitHub: github.com/roswelly
- X / Twitter: x.com/roswellyecho
- Telegram: t.me/roswellecho
- Email: yabidev@gmail.com
Hire a Rust smart contract & trading infra developer
Planning a prediction market, trading engine or Web3 casino game engine? Let's talk architecture, Rust smart contracts, and the low-latency backend to run it in production.
Get in touch