Senior Blockchain Engineer - Remote Flexible Web3 Innovator

UseBlocky; Colorado Springs (CO); On-site; USD 150,000 - 230,000; Full time

Benefits offered by this job

Competitive salary

Flexible working environment

Impactful blockchain projects

Growth-focused team culture

Professional development

Learning opportunities

Job summary

UseBlocky is seeking a Senior Blockchain Engineer to design, build, and scale secure blockchain-based products. You will collaborate with product, engineering, and security teams to develop robust Web3 solutions and contribute to technical architecture.

In a remote-first environment, you will mentor junior engineers, review code, optimize smart contracts for security and gas efficiency, and stay ahead of evolving blockchain technologies while delivering reliable backend services.

Qualifications

• 5+ years of professional software engineering experience.
• 3+ years of hands-on blockchain or Web3 development experience.
• Strong experience with Solidity, Rust, Go, or other blockchain-related programming languages.
• Experience developing and deploying smart contracts on mainnet or testnet environments.
• Strong understanding of blockchain concepts, including consensus mechanisms, wallets, private keys, transactions, gas fees, bridges, and token standards.
• Experience with frameworks and tools such as Hardhat, Foundry, Truffle, Web3.js, Ethers.js, Anchor, or similar.
• Solid backend development experience using Node.js, TypeScript, Go, Python, or similar technologies.
• Strong understanding of security best practices for smart contracts and decentralized systems.
• Experience with Git, CI/CD workflows, APIs, databases, and cloud infrastructure.
• Excellent problem-solving, communication, and teamwork skills.

Responsibilities

• Design, develop, test, and deploy smart contracts and blockchain-based applications.
• Build and maintain decentralized applications, blockchain integrations, and backend services.
• Work with blockchain networks such as Ethereum, Polygon, Solana, BNB Chain, Avalanche, or similar ecosystems.
• Review and optimize smart contracts for security, gas efficiency, and performance.
• Collaborate with frontend, backend, product, and security teams to deliver high-quality Web3 products.
• Participate in architecture decisions and contribute to technical strategy.
• Integrate wallets, token standards, DeFi protocols, NFTs, DAOs, or other blockchain infrastructure as needed.
• Write clean, maintainable, well-documented code.
• Conduct code reviews and mentor junior engineers.
• Stay current with emerging blockchain technologies, security standards, and industry best practices.

Skills

Software engineering

Blockchain/Web3 development

Solidity/Rust/Go

Smart contracts

Blockchain concepts

Frameworks/tools

Backend development

Security best practices

Git/CI-CD

Communication and teamwork

Tools

Hardhat

Foundry

Truffle

Web3.js

Ethers.js

Anchor

Job description

UseBlocky is seeking a Senior Blockchain Engineer to design, build, and scale secure blockchain-based products. You will collaborate with product, engineering, and security teams to develop robust Web3 solutions and contribute to technical architecture.

In a remote-first environment, you will mentor junior engineers, review code, optimize smart contracts for security and gas efficiency, and stay ahead of evolving blockchain technologies while delivering reliable backend services.