Mamoru

Blockchain Wallet Engineer (Rust)

Toronto, ON, Canada
Full Time
Experienced

Location: Toronto, Canada 

About the role

Build and run the multi-chain Blockchain wallet and custody systems for our trading desk: keep funds safe and move them fast between wallets, exchanges and chains.

What you’ll do

  • Build hot / warm / cold wallets across EVM, Solana, BTC, TRON.
  • Implement secure signing and key management: MPC/TSS, multisig, HSM.
  • Automate deposits, withdrawals and transfers, with whitelists and approval workflows.
  • Handle transaction construction, nonces, gas, stuck or failed transactions and reorgs.
  • Run nodes and RPC connections.
  • Monitor and reconcile on-chain and exchange balances, and raise alerts on anomalies.
  • Own wallet security and incident response.

Requirements

  • Rust (must-have). Go, C++ or Python is a plus.
  • 3+ years building wallet, custody or payment systems in production.
  • Multi-chain: EVM plus at least one non-EVM chain.
  • Hands-on MPC/TSS, multisig or HSM signing.
  • Nodes, RPC, reorg and confirmation handling.
  • Bachelor’s degree in CS, Engineering or a related field.

Strongly preferred

  • Wallet experience at an exchange, custodian or trading firm.
  • Exchange deposit/withdrawal APIs, cross-chain bridges.
  • Solidity / smart contracts.
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