Senior Blockchain Engineer

Itech Soft Solutions; Kuala Lumpur; On-site; MYR 180,000 - 300,000; Full time

Job summary

Itech Soft Solutions in Kuala Lumpur is seeking a senior smart contract engineer to design and ship audit-ready Solidity contracts for exchanges and DeFi protocols, from threat modelling to mainnet deployment.

You will lead security reviews, write robust tests with Foundry and Echidna, and build the full-stack dApp layer using React, wagmi, and ethers.js. 5+ years of software engineering and 3+ years shipping contracts required.

Qualifications

• 5+ years of software engineering
• 3+ years shipping production smart contracts
• Deep Solidity expertise and a security-first mindset
• Experience with Foundry, Hardhat, and EVM internals
• Track record of contracts deployed to mainnet
• Nice to have: formal verification, Cairo/Solana, or audit experience

Responsibilities

• Architect and implement Solidity (and occasionally Vyper) contracts for exchanges, DeFi protocols, and token systems
• Write comprehensive test suites — unit, fuzz, and invariant testing with Foundry and Echidna
• Lead internal security reviews and coordinate third-party audits
• Build the full-stack dApp layer with React, wagmi, and ethers.js

Skills

Solidity

Security-minded

Full-stack dApp

React

wagmi

ethers.js

Foundry

Echidna

Hardhat

EVM internals

Tools

Foundry

Echidna

Hardhat

EVM internals

Job description

Design and ship audit-ready smart contracts and full-stack dApps for protocols securing real on-chain value.

You will own smart contract systems end to end — from threat modelling and architecture through implementation, testing, and mainnet deployment. Our contracts secure billions in on-chain value, so security and correctness are not negotiable.

What you'll do

• Architect and implement Solidity (and occasionally Vyper) contracts for exchanges, DeFi protocols, and token systems
• Write comprehensive test suites — unit, fuzz, and invariant testing with Foundry and Echidna
• Lead internal security reviews and coordinate third-party audits
• Build the full-stack dApp layer with React, wagmi, and ethers.js

Requirements & nice-to-haves

• 5+ years of software engineering, 3+ years shipping production smart contracts
• Deep Solidity expertise and a security-first mindset
• Experience with Foundry, Hardhat, and EVM internals
• Track record of contracts deployed to mainnet
• Nice to have: formal verification, Cairo/Solana, or audit experience