Senior Software Engineer - Blockchain

• Design, develop, and deploy smart contracts on EVM‑compatible chains using Solidity
• Implement ERC standards and DeFi protocols; optimize gas usage and contract efficiency
• Develop and maintain backend APIs/microservices using Node.js, Express, and TypeScript
• Integrate blockchain nodes, wallets, oracles, and cross‑chain bridges (Infura, Alchemy, Web3 providers)
• Ensure secure deployment through audits, vulnerability checks, and performance optimization
• Collaborate with frontend, DevOps, and product teams to deliver complete dApp solutions
• Maintain and enhance blockchain architecture, SDKs, and improve scalability/reliability

• 3–5 years of total software development experience
• 2–3 years of hands‑on Solidity and EVM‑based development
• Strong proficiency in Node.js, Express, TypeScript
• Deep understanding of smart contract design patterns, ERC standards, and DeFi protocols
• Experience with Web3 frameworks/libraries (Ethers.js, Web3.js)
• Strong knowledge of APIs, microservices, and distributed systems

• Knowledge of cryptographic primitives, Merkle trees, zero‑knowledge proofs
• Experience with IPFS, The Graph, Chainlink
• Exposure to cross‑chain protocols and interoperability solutions
• Background in DeFi or Web3 ecosystems

• Languages: Solidity, JavaScript/TypeScript, Node.js
• Frameworks: Hardhat, Truffle, Express.js
• Libraries: Ethers.js, Web3.js
• Databases: MongoDB, PostgreSQL
• Tools/Platforms: Docker, GitHub Actions, AWS, Infura, Alchemy

• Strong problem‑solving and analytical thinking
• Ability to work independently and in cross‑functional teams
• Clear communication with technical and non‑technical stakeholders
• Ownership‑driven, proactive mindset
• Ability to manage multiple priorities and deadlines

• Location: Hybrid
• Experience: 3–5 Years
• Employment Type: Full‑Time

About TekHQS TekHQS is a global technology and AI‑driven solutions company delivering scalable SaaS, Cloud, AI/ML, Blockchain/Web3, DevOps, and enterprise software solutions to startups and enterprise clients worldwide. With a team of 300+ professionals across the USA, UK, UAE, Qatar, Pakistan, and India, we specialize in building high‑performance digital products across Logistics, FinTech, Healthcare, and emerging technology sectors. At TekHQS, we foster a culture of innovation, ownership, and continuous growth — empowering our teams to build impactful technology that drives real business transformation.