Nitish Kumar
Protocol and backend engineer at Timeswap Labs. I build the infrastructure under DeFi: indexers that turn raw chain events into positions people can trust, custody systems that check a transfer before it is signed, and order books that put a price on time. Four years across Timeswap, Liminal, Diamante and Hashmail.
- Research
- Nanyang Blockchain Conference (NBC ’26), NTU Singapore, 2026
- Recognition
- ETHIndia 2023 winner, Safe track; 3 hackathon track wins. 40+ security vulnerabilities responsibly disclosed.
- Education
- B.E., Information Science and Engineering, NITTE Meenakshi Institute of Technology (VTU)
Experience
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Sole engineer on the Rust indexer and API that replaced it. Per-chain write-ahead logs that pause rather than drop data, atomic reorg rollback with a single recovery leader, isolated Postgres pools so API load never starves ingestion, and 2,200+ tests including Anvil reorg suites.
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The event platform behind a fixed-rate lending protocol: six EVM chains, 15k+ blocks a day at under two seconds, 100k+ positions. Kafka with reorg detection and idempotent replay; protocol maths re-implemented off-chain and reconciled to one wei; three contract versions migrated with zero downtime.
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Built Go storage modules for a Stellar-fork Layer 1 ledger, keeping state persistence replay-safe under consensus finality and validator interaction.
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Institutional custody on MPC and HSM wallets. Built a Go engine that simulates every client transfer on an EVM state snapshot before it is signed, cutting on-chain failures by 45%. Moved multisig approvals off Safe’s APIs to run on Ethereum, Polygon and BSC, and took a transaction-history API from 6–7 seconds to under 300 ms.
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Took a decentralised messaging product from idea to 500+ beta users, with cryptographic proof that each message is authentic. Wrote its contract-event indexer for 10k+ transactions a day, and audited ERC-20, 721 and 4626 contracts that cost 35% less gas than the OpenZeppelin baseline.
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Projects
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A peer-reviewed study of MEV and liquidity fragmentation across decentralised exchange networks, presented at the Nanyang Blockchain Conference 2026 at NTU Singapore.
Read the research →Block- Hash
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A central limit order book that trades yield, not price. A Rust matching engine with one book per maturity on 1bp rate ticks, atomic roll orders priced off the implied forward rate, batch clearing against sandwich attacks, and a write-ahead log that replays to an identical state hash.
Open Arcus →Block- Hash
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Won the Safe track at EthIndia with a cross-chain DeFi lending prototype built over a weekend. One of three hackathon track wins.
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