Smart Contract Engineer

BIT Official; Singapore; On-site; SGD 140,000 - 180,000; Full time

Job summary

BIT Official is seeking a senior blockchain engineer in Singapore to design, build, and ship core smart contracts for tokenized real-world assets. You will work across EVM and non-EVM chains, adapting to each chain’s model and ensuring secure, upgradeable implementations.

You will collaborate with a security-focused team and contribute to on-chain monitoring, audits, and governance frameworks, using Solidity, Rust, Move, and popular tooling.

Qualifications

• Bachelor's degree in Computer Science or related field.
• 5+ years of software development experience.
• 2+ years in smart contract development.

Responsibilities

• Design, build, and ship core smart contracts for tokenized RWA products.
• Develop multi-chain implementations on EVM and non-EVM chains.
• Ensure security through audits, tests, and formal verifications.

Skills

Solidity

Rust

Move

Smart contracts

DeFi

Security practices

LayerZero/CCIP familiarity

English communication

Education

Bachelor's degree in Computer Science

Tools

Hardhat

Foundry

Anchor

Sui CLI

LayerZero

CCIP

OpenZeppelin

Job description

BIT (formerly Matrixport) is a global digital asset financial services and infrastructure group. Headquartered in Singapore and founded in 2019, BIT bridges traditional finance and digital assets through governance-driven financial services and technology.

The firm manages over US$7 billion in assets and facilitates more than US$7 billion in monthly trading volume. BIT offers services including custody, trading, asset and wealth management, liquidity and financing solutions, and tokenised real-world assets (RWA), serving institutional and professional investors globally.

BIT Group entities maintain a licensed and regulated footprint across Singapore, Hong Kong, Switzerland, the United Kingdom, the United States and Bhutan.

For more information, visit www.bit.com

Kickstart Your Journey at BIT:

At BIT, we come together as a dynamic team to tackle exciting challenges head-on, creating an environment bursting with openness, transparency, and inclusivity. Every graduate is a vital part of our mission, and your ideas will always be valued. We’re searching for passionate, intellectually curious, and entrepreneurial individuals ready to make a real impact in the crypto ecosystem and help create innovative products for the next billion users.

• Make a Difference in the Future of Web3!
• Gain Hands-On Experience with Cryptocurrencies!
• Mentorship and Networking with Industry Leaders!
• Join a Fun, Vibrant, and Engaging Culture!

About the Team

Matrixdock is a real-world asset (RWA) tokenization platform, offering tokenized gold (XAUm), tokenized silver (XAGm), and a short-term treasury bill token (STBT). XAUm is fully backed 1:1 by LBMA-accredited gold bars of 99.99% purity and is live on Ethereum, BSC, Solana, Sui, and other major chains. You will join the core smart contract team and own the on-chain systems that carry real assets.

Responsibilities

• Design, build, and ship the core smart contracts for our tokenized RWA products
• Build and maintain protocol implementations across EVM chains (Ethereum / BSC / Tron) and non-EVM chains (Solana / Sui / Stellar), adapting the design to each chain’s native model, and enable multi-chain issuance and cross-chain transfers through messaging protocols such as LayerZero and CCIP
• Build the contract security and governance framework - access control, timelocked operations, and upgradeable architecture (UUPS proxy) - ensuring safe, controlled upgrades and backward-compatible storage layouts
• Develop a deep understanding of leading DeFi protocols (e.g., Uniswap, Aave) and own third-party protocol integrations
• Write secure, gas-efficient contract code with high test coverage; drive third-party security audits and remediate findings
• Build on-chain monitoring and operations tooling to detect anomalous events, especially around fund-sensitive operations such as minting and burning
• Stay current with EIPs, new chain features, and industry security incidents; evaluate and integrate relevant advancements into our stack
• Contribute to the overall architecture of our blockchain systems and provide technical guidance to team members
• Bachelor’s degree or above in Computer Science or a related field; 5+ years of software development experience, including 2+ years in smart contract development
• Strong proficiency in at least one major blockchain platform such as Ethereum, Solana, or Sui, with hands-on smart contract development in Solidity, Rust, or Move; deep understanding of your chain’s execution model, gas mechanics, and storage layout; practical experience with upgradeable contracts, including performing live upgrades
• Proficiency with the mainstream development frameworks for your chain (e.g., Hardhat / Foundry, Anchor, Sui CLI), with solid engineering practice across testing, fuzzing, deployment, and on-chain verification
• Deep understanding of smart contract security best practices; able to identify and prevent common attacks such as reentrancy, access-control bypass, price manipulation, and front-running; experience working with security auditors and remediating findings
• Familiarity with the OpenZeppelin contracts library and the design principles behind security components such as AccessControl, TimelockController, and Pausable
• Solid understanding of DeFi building blocks: AMMs, oracles, and asset-pegging mechanisms
• Working knowledge of digital signatures and on-chain signature verification (e.g., EIP-712, replay protection), plus a good grasp of blockchain fundamentals
• A strong sense of ownership - able to own core modules end-to-end with minimal supervision and help shape the product’s technical direction
• A strong communicator, with the ability to write clear technical documentation
• A security-first mindset: rigorous, detail-oriented, and ready to be accountable for institutional-grade asset contracts

Nice to Have

• Experience building contracts for reserve-backed or pegged assets (e.g., PAXG, XAUt, wBTC, USDC), stablecoins, or RWA projects
• Familiarity with at least one non-EVM stack - Rust (Solana Anchor / Soroban) or Move (Sui / Aptos); experience shipping one protocol across multiple chains is a strong plus
• Familiarity with cross-chain messaging protocols such as LayerZero, Wormhole, CCIP, or Axelar
• Experience with DEX integrations or concentrated liquidity market making (CLMM)
• Public audit reports, bug bounty records, CTF achievements, or open-source contract projects
• Experience integrating oracles such as Chainlink (e.g., Proof of Reserve) and implementing safeguards against price manipulation
• Professional fluency in English for direct communication with audit firms and ecosystem partners

Embrace the opportunity to thrive and grow with us as we shape the future together at BIT!

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