Blockchain Developer – Wallet & Sol token

Tech-stack: Solidity/Vyper/Rust

Negotiable

Job Descriptions:

    • Develop and deploy smart contracts for tokens on Solana (SPL Token).
    • Design, develop, and optimize crypto wallets for EVM-based systems (Ethereum, BSC, Arbitrum, etc.).
    • Integrate wallets with DeFi protocols such as swap, bridge, staking, and more.
    • Ensure security, performance, and scalability of smart contracts and wallet systems.
    • Conduct testing, auditing, and resolve security vulnerabilities in smart contracts.
    • Collaborate with backend/frontend teams to integrate smart contracts and wallets into the system.

Responsibilities:

    • Proficient in developing smart contracts using Solidity or Vyper.
    • Strong programming skills in Solidity and Rust.
    • Experienced in deploying tokens on Solana (SPL Token).
    • Hands-on experience in developing or integrating crypto wallets on EVM (e.g., MetaMask, Trust Wallet).
    • Solid understanding of blockchain transaction mechanisms, gas fee optimization, and security best practices.
    • Experience working with Web3.js, Ethers.js, and Solana Web3.js.
    • Capable of auditing and securing smart contracts, preventing common vulnerabilities like reentrancy and flash loan attacks.

Preferred Skills:

    • Experience working with DeFi protocols and liquidity pools.
    • Understanding of token deployment on Layer-2 solutions or other scalability platforms.
    • Strong background in encryption algorithms and blockchain security.
    • Knowledge of cross-chain bridges and multi-chain wallet systems.
    • Experience with the Anchor Framework on Solana.

Benefits:

    • Fixed salary negotiable based on competency.
    • Probation period with 85% salary.
    • Mandatory insurance after the probation period.
    • 12 days of annual leave.
    • Work from Monday to Friday, off on Saturdays and Sundays.
    • Paid holidays and Tet as per government regulations.
    • Friendly and dynamic work environment.
    • Monthly allowance for candidates with an IELTS certificate of 5.5 or higher.
    • Other benefits as per company policy.

if interested, please send your resume and cover letter to hr@toptestglobal.com

OUr related industries

Full time

Ha Noi

Negotiable

Tech-stack: Solidity/Vyper/Rust
  • Deploy Solana SPL token contracts
  • Optimize EVM-based crypto wallets
  • Integrate DeFi swaps & bridges
  • Secure contracts & wallet systems
  • Audit & test for vulnerabilities
  • Full time

    Ha Noi

    Negotiable

    Tech-stack: Solidity/Vyper
  • Deploy TRX, ETH & BSC smart contracts
  • Maintain cross-chain token price consistency
  • Integrate cross-chain bridging solutions
  • Collaborate with front-end developers
  • Optimize blockchain performance & security