BITFIT LABS

Senior Blockchain Engineer

RemoteFull-timeGlobal

💰 USD 150,000 - 180,000/yr

📊 Senior🏠 Remote

RemoteRemote work position availableActivePosted within the last 30 days

Job Description

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30d ago

**About BITFIT LABS PTE LTD

BITFIT LABS PTE LTD is a Singapore-based blockchain software development company building a wide range of Web3 and blockchain products for global clients. Our team consists of 50+ fully remote engineers, designers, and operators across Singapore, Vietnam, Taiwan, Hong Kong, Japan, and global regions. We develop products including non-custodial wallets, exchanges, smart contracts, dApps, and digital asset infrastructure.

We are looking for experienced Blockchain Engineers who can design, build, and maintain secure and scalable blockchain systems across multiple ecosystems.

1. Responsibilities **

Design and develop smart contracts, blockchain integrations, and Web3 infrastructure
Build backend services interacting with EVM and non-EVM chains
Develop secure wallet, DeFi, exchange, and staking-related systems
Optimize smart contract performance, gas efficiency, and security
Participate in architecture design, code reviews, and technical discussions
Collaborate with frontend, backend, mobile, DevOps, and QA teams
Troubleshoot blockchain node, RPC, indexing, and transaction-related issues

2. Requirements **

3+ years of experience at blockchain/Web3 companies
Strong understanding of blockchain architecture and decentralized systems
Experience with Ethereum, EVM chains, and smart contract development
Proficiency in Solidity and at least one backend language (Node.js, Go, Rust, Python, etc.)
Experience integrating wallets, exchanges, DeFi protocols, or blockchain infrastructure
Knowledge of security best practices and common smart contract vulnerabilities
Familiarity with RPC nodes, indexing, event listeners, and transaction lifecycle
Experience using Git, CI/CD, Docker, and cloud infrastructure

3. Preferred Qualifications**