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gunaseelan.dev
Gunaseelan
available for select contracts

Building cross-chain
infrastructure at the edges of consensus.

I build production-grade decentralized infrastructure across Aptos, Solana, and EVM — DEX aggregators, bridge tooling, and payment rails that settle in under a minute.

about

5+ years · production

Blockchain engineer with 5+ years building production-grade decentralized infrastructure across Aptos, Solana, and EVM. I write Move and Solidity, ship TypeScript backends that don't fall over, and care a lot about the parts of finance that look boring until they're not — settlement, routing, and determinism.

At KanaLabs I've shipped a cross-chain DEX aggregator with multi-path split routing in Move, integrated 10+ DEXs, and built bridge infrastructure across 7+ chains using CCTP v1/v2, Relay, and Across. Before that, derivatives infra at EthosX on Arbitrum and BSC — contracts, backend, and the whole frontend.

Hackathons: ETHIndia · ETHGlobal Singapore · Sui Liquid Staking (shortlisted by the Sui Foundation).

currently

Building HashPay — a cross-chain payment gateway that settles to any chain in <60s with exact output amounts. QR-based deposits funded from any chain.

stack

Smart Contracts
MoveSolidityRustAnchor
Chains
AptosSolanaEthereumArbitrumBaseBSCPolygonAvalancheSui
Cross-Chain
CCTP v1/v2RelayAcrossWormhole
DEX & DeFi
Uniswap V30xParaswapThalaSwapCellanaPontemHyperion
Frontend
TypeScriptReactNext.jswagmiviem
Tooling
HardhatFoundryGCP/GKEDockerPostgreSQL

selected work

6 projects
01

HashPayBuilding

Cross-chain payment gateway that settles to any chain in under 60 seconds with exact output amounts. QR-based deposits let users fund from any chain instantly.

CCTP v2Solana PDAs0xParaswapMoveTypeScript
02

KanaAggregator — Aptos DEX AggregatorProduction

Move smart contracts for multi-path split routing across 10+ Aptos DEXs. Reverse AMM math for exact-output swaps. Parallelized TS aggregator using worker threads.

MoveAptosTypeScriptWorker Threads
03

Cross-Chain AggregatorProduction

Bridge infrastructure across 7+ chains using CCTP v1/v2, Relay, and Across. Unified TypeScript interfaces over Solana, Aptos, and EVM transaction shapes.

CCTPRelayAcrossSolanaAptosEVM
04

EthosX OperPSShipped

Derivatives trading platform across TradFi & crypto. Led smart contract integration on Arbitrum and BSC, backend trade execution, and full frontend with wagmi.

SolidityArbitrumBSCwagmiNode
05

Solana Staking & Lending BackendShipped

Aggregation backend for stake/unstake and lending/borrowing on Solana. Designed and shipped a multi-tier referral system for the Kana product surface.

SolanaAnchorTypeScriptPostgreSQL
06

Sui Liquid Staking — HackathonShortlisted

Liquid staking primitive for Sui submitted to the Sui Foundation hackathon. Shortlisted from a global field; shipped end-to-end in a weekend.

Sui MoveTypeScriptReact

experience

where i've shipped
Jan 2022 — Present

KanaLabs

Blockchain Engineer
  • HashPay — payment gateway settling to any chain in <60s. CCTP v1/v2 across ETH, Polygon, Avalanche, Base, BSC, Arbitrum, Aptos, Sui, Solana. Exact-out swap logic via 0x buyAmount and Paraswap side=BUY.
  • KanaAggregator — Move contracts for multi-path split routing across 10+ DEXs (ThalaSwap, Cellana, Pontem, Hyperion, Amnis, Earnium, Cetus, Tappstable). Reverse AMM math for exact-output swaps.
  • Cross-chain aggregator integrating CCTP, Relay, and Across across 7+ chains. Unified TS interfaces over Solana, Aptos, and EVM.
  • Solana backend — staking, lending, and a shipped multi-tier referral system.
2021 — 2022

EthosX

Blockchain & Full-Stack Engineer
  • Led smart contract integration for derivatives trading on Arbitrum and BSC.
  • Built the backend server for trade execution and position management.
  • Developed the full frontend UI with wallet connect and real-time contract interaction using wagmi.

github activity

@gunaseelan25
Gunaseelan's GitHub contribution graph

contact

open to work

Let's build something settle-able.

I'm taking on a small number of contracts and audits. Move, Solidity, or backend.