Liam – Solana, Smart contracts, web3.js

A mobile trading app on Solana for perpetual futures and prediction markets, built for retail traders rather than professionals.

• Built the Phoenix perpetuals integration from scratch against undocumented on-chain instruction formats.
• Designed a trait-abstracted provider interface unifying Jupiter, Flash Trade, GMTrade, and Drift behind one contract.
• Shipped prediction markets onto the existing execution stack by integrating Jupiter Predictions and Polymarket.
• Wrote a multi-lane transaction submission crate over Jito, Helius, Triton, and Nozomi with validated tip policies.
• Built Tokio market-data ingestion from Pyth, Phoenix, and Chainlink, normalized into one event stream with failover.
• Integrated Privy server wallets with admin co-signing, onboarding 3,000+ users into self-custodial wallets.
• Implemented funds-safety controls including idempotent mutations, SQL write fences, and on-chain withdrawal sweeps.

A fast Solana price-prediction game: bet on cells ahead of a live SOL/USD line moving across a multiplier grid, with instant rounds, streaks, leaderboards, and a Solana Mobile paid tier.

• Wrote the on-chain program in Rust with Anchor.
• Built the API backend in NestJS.
• Developed the Solana integrations in the frontend — wallet connection, transaction construction, and account decoding with the Solana Kit.
• Integrated Privy for wallet onboarding.

A 24-hour Solana competition market: players stake on a token, communities rally and shill their side, and the token with the biggest gain claims the opposing pool. Players pick a battle date, stake before gates close, and claim winnings afterward.

• Built the on-chain program in Rust with Anchor.
• Developed the Solana integrations connecting the Next.js and React client to the program using web3.js.
• Worked across the Node.js backend service behind the app.

A Solana trading aggregator that consolidates perpetual, spot and margin liquidity across venues, routes orders to minimise slippage and fees, and surfaces market data and analytics across those venues.

• Built perpetual-DEX indexing services in Rust with Axum and Tokio.
• Consumed live on-chain order flow over gRPC and streamed it into ClickHouse for analytics and backtesting.
• Produced the trade-level record from which the platform's fee-rebate mechanism was calculated.