Senior Software Engineer - Blockchain

About the Role

 We are seeking a Senior Blockchain Developer with strong expertise in Solidity and Node.js to design, develop, and deploy scalable blockchain solutions. The role involves building secure smart contracts, backend APIs, and full Web3 infrastructure while collaborating with cross‑functional teams to deliver high‑performance decentralized applications (dApps).

Key Responsibilities

• 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

Requirements

• 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

Good to Have

• 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

Tech Stack

• 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

Soft Skills

• 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

Job Details

• 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.