thomassss
Blockchain Developer
I’m a Web3 engineer focused on Solana DeFi, MEV/arbitrage infrastructure, and protocol-level systems, with hands-on experience spanning low-latency execution, on-chain program integration, and multi-chain research.
From 2022–2023, I built an independent MEV / arbitrage studio with a strong emphasis on latency, reliability, and execution quality:
- On Solana (Jito), I engineered a low-latency MEV/arbitrage pipeline by customizing parts of jito-validator and jito-relayer, including transaction packet formatting and TPU send paths, and running self-hosted AWS nodes to reduce network hops and improve leader-slot delivery.
- I developed Python real-time backend services to parse raw Solana transaction bytes and DEX trades, maintain a live market view, evaluate opportunities against fees and failure risk, construct transactions, and submit them with slot-awareness for automated execution.
- On Ethereum, I implemented a Uniswap V2/V3 arbitrage engine, using event subscriptions (e.g., PairCreated) and WebSocket block streaming (eth_subscribe) to keep pool state synchronized. I stored live pool/price/liquidity snapshots in MongoDB, modeled profit and execution risk (gas, slippage, revert probability), and sent transactions via Flashbots/MEV relays to reduce frontrunning and increase success rate.
Technically, I’m comfortable working across Rust, Python, and Solidity, and building production-oriented systems with Redis/MongoDB, stream processing, and execution monitoring.
Beyond execution systems, I do deep protocol research and architecture work. I’ve studied and documented consensus and core flows across multiple chains, including:
- Ethereum PoS (Gasper) via Prysm, PoW (Ethash), and DPoS designs;
- Solana PoH + Tower BFT with detailed sequence diagrams from leader election and slot production to voting/finality, and I tracked Votor/Rotor proposals at a process level;
- comparisons of Polkadot (NPoS + BABE), Cardano (Ouroboros), Sui (Narwhal + Bullshark), and XRPL consensus—specifically evaluating how design choices map to HFT-style workloads, general-purpose apps, and payments.
I also researched L2 / rollup transaction lifecycles and customization points, including:
- mapping an L2 transaction from user → sequencer → proof generation → L1 submission in the Polygon ecosystem,
- reading OP Stack components (op-geth / op-node) and diagramming the end-to-end data flow from L2 mempool/execution to L1 calldata, identifying where business logic fits versus where core infrastructure should remain untouched.
In addition, I built a Cosmos-SDK transactional chain prototype, studying ABCI/CometBFT and exploring module-based designs. Using a “Hyperliquid-style trading chain” as a reference, I drafted module decomposition for matching/price discovery, positions, and liquidations, and experimented with module configuration and extension patterns.
Finally, I’ve done hands-on analysis of DeFi protocol flows and extension points across ecosystems:
- Sui (Cetus CLMM, Scallop lending),
- Cardano/Polkadot (UTXO-style DEX/lending patterns, Acala modules),
- Solana (Pump.fun flow, Raydium LP/trading, Marinade/Sanctum LSD, MarginFi lending/liquidations), and I compiled a developer-facing integration checklist for strategy, aggregation, and risk components.
What I’m looking for: engineering roles where I can own architecture end-to-end—especially around Solana DeFi vaults/strategies, execution & risk systems, MEV-aware trading infrastructure, and protocol integrations—working closely with quants/research and scaling systems from prototype to production.
Tech stack: Rust, Python, Solidity, Solana, Ethereum, Jito, Flashbots, Redis, MongoDB.
Experience: 4 years
Yearly salary: $30,000
Hourly rate: $20
Nationality: 🇭🇰 Hong Kong
Residency: 🇭🇰 Hong Kong
Experience
Blockchain Developer
GMX Limited 2025 - 2026
- Built core components of a **pool-based perpetual futures model** on Solana (non-orderbook): market state, exposure representation, and PnL accounting foundations - Implemented and iterated on **margin & liquidation** flows (partial/full liquidation triggers, fee paths, safety bounds) with a focus on correctness under volatile conditions - Integrated **oracle sources** (e.g., Pyth/Chainlink) with validation/guardrails (freshness, deviation windows, expiry checks) to mitigate anomalous pricing risk - Designed and implemented parts of the **swap + settlement pipeline** to support collateral conversions during position lifecycle (open/close/add-margin/settle) - Contributed to liquidity architecture and pool/vault mechanics (e.g., **GLV/GM pools**): share accounting, fee distribution, parameterization to bound LP risk - Worked on mechanisms for inventory/risk balancing (e.g., virtual inventory style controls) to manage skew and price impact - Designed/implemented an off-chain **Keeper execution engine**: monitors on-chain events/orders, validates price conditions, and executes with fault-tolerance - Collaborated cross-functionally on protocol upgrades, testing strategy, and production readiness (failure modes, monitoring, safe rollouts) **Tech**: Rust, Anchor, Solana, oracle integration, DeFi perps design, off-chain keepers
Skills
analyst
blockchain-engineer
c-plus-plus
cosmos
nlp
rust
solidity
ton-developer
web3-py
english