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UseBlocky is a global technology company specializing in Blockchain, Web3, AI, and custom software development. Founded in 2020, the company helps startups, enterprises, and SMBs build innovative digital products, including decentralized applications (dApps), smart contracts, crypto platforms, mobile applications, and scalable web solutions. UseBlocky combines deep technical expertise with a remote-first culture, empowering teams to deliver cutting-edge products across industries such as fintech, blockchain gaming, DeFi, and emerging technologies. The company is committed to innovation, continuous learning, and creating impactful solutions that shape the future of digital experiences.

We are looking for a highly skilled Senior Blockchain Engineer to join our engineering team and help design, build, and scale secure blockchain-based products. The ideal candidate has strong experience in smart contract development, blockchain protocols, decentralized applications, and backend systems.

You will work closely with product, engineering, and security teams to develop robust Web3 solutions, contribute to technical architecture, and ensure our blockchain infrastructure is secure, scalable, and reliable.

• 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.

• 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.

• Experience with DeFi, staking, tokenomics, NFT platforms, Layer 2 solutions, or cross-chain protocols.
• Familiarity with smart contract audits and formal verification.
• Open-source contributions in the blockchain or Web3 ecosystem.
• Experience with indexing tools such as The Graph.
• Knowledge of zero-knowledge proofs, account abstraction, MEV, or rollup technologies.
• Previous experience working in a startup or fast-paced product environment.

• Competitive salary and performance-based incentives.
• Flexible working environment.
• Opportunity to work on innovative blockchain and Web3 products.
• Collaborative and growth-focused team culture.
• Professional development and learning opportunities.
• The chance to make a meaningful impact in a rapidly growing industry.

Please submit your resume, GitHub profile, portfolio, or examples of previous blockchain projects. We would love to hear about smart contracts, protocols, or Web3 applications you have built or contributed to.

Join us and help build the future of decentralized technology.