Mamoru

Fintech platforms and partnerships

Blockchain Wallet Engineer - Rust

Blockchain & Smart Contract EngineeringPosted on Nov 10

Full-timeShenzhen, Guangdong Province, ChinaNo salary listed

About the Job

Requirements

Rust is required; Go, C++, or Python is a plus.
At least 3 years of production experience building wallet, custody, or payment systems.
Experience with EVM and at least one non-EVM chain.
Hands-on experience with MPC/TSS, multisig, or HSM signing.
Experience with nodes, RPC, reorgs, and confirmation handling.
A bachelor's degree in Computer Science, Engineering, or a related field is required.

Responsibilities

Build and run multi-chain crypto wallet and custody systems for the trading desk, keeping funds safe and moving them between wallets, exchanges, and chains.
Build hot, warm, and cold wallets across EVM, Solana, BTC, and TRON.
Implement secure signing and key management using MPC/TSS, multisig, and 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.

Desired Qualifications

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

Location : Shenzhen Office

About the role

Build and run the multi-chain crypto 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.

About the Company

Mamoru

Fintech platforms and partnerships

Mamoru is a financial technology group. It develops technology and partnerships that expand access to financial products, market infrastructure, and digital asset services. The group works with consumers, businesses, financial partners, and market participants across several African and international markets. Its model combines platform development, market operations, settlements, compliance, sales, partnerships, customer support, and country-level execution. Work spans business development, partnerships, operations, settlements, compliance, product, technology, and customer service. The work links financial technology expertise with day-to-day delivery for financial users and partners.

Company size: Not listed
Company stage: Not listed
Total funding: Not listed
Headquarters: Not listed
Founded: Not listed

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