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Senior Blockchain Developer
USquareIndia, India30+ days ago
Job description4+ years in backend development and 2+ years in smart contract development. Deep understanding of Ethereum, EVM architecture, L2 scaling solutions, and DeFi / NFT standards (ERC20, ERC721, ERC1155). Proficiency in Solidity, JavaScript / TypeScript, Node.js, and at least one systems language (Go, Rust, or C++). Strong experience in blockchain solution architecture for scalable dApps. Mid-level experience with AWS (EC2, Lambda, API Gateway, S3, RDS). Familiarity with common smart contract vulnerabilities and mitigation strategies. Proven ability to deliver secure, scalable, production-ready blockchain systems. Experience with Hardhat, Foundry, Truffle, Web3.js / Ethers.js. AWS DevOps experience for blockchain-based apps, including CI / CD pipelines and container orchestration. Cross-chain development and interoperability protocol expertise. Knowledge of zero-knowledge proofs (ZK-SNARKs / STARKs). Experience with audited DeFi protocols. Familiarity with L2 rollups, bridges, and advanced blockchain scaling techniques. Exposure to NFTs, DeFi mechanics, and modern blockchain infrastructure.
Hiring : Senior Backend + Smart Contract Developer (Web3)
We’re looking for a highly experienced Backend + Smart Contract Developer with a strong grasp of blockchain architecture and mid-level AWS expertise to join our innovative Web3 team. This is your chance to design and build cutting-edge decentralized systems that scale globally.
Key Responsibilities
- Smart Contract Development :
- Architect, develop, and deploy secure smart contracts (Solidity / Rust) for Ethereum, EVM-compatible chains, and other L1 / L2 networks.
- Conduct in-depth testing, auditing, and gas optimization.
- Backend Engineering & Blockchain Architecture :
- Design high-performance backend systems and scalable blockchain architectures.
- Build and maintain APIs, node integrations, and indexing services (e.g., The Graph, Alchemy, Infura).
- Cloud & Infrastructure (AWS) :
- Deploy and manage backend services using AWS (EC2, Lambda, API Gateway, S3, RDS) and cloud best practices.
- Implement CI / CD pipelines, containerization (Docker, Kubernetes), and monitoring solutions.
- Security & Optimization :
- Ensure system security, resilience, and gas optimization.
- Apply best practices for mitigating vulnerabilities (reentrancy, overflow, etc.).
- Collaboration & Ownership :
- Work closely with frontend, DevOps, and product teams to deliver robust end-to-end blockchain products.
- Take complete ownership from architecture to deployment.
Must-have Qualifications
Preferred Qualifications
📍 Location : Remote / Hybrid (India preferred)
📌 Type : Full-time
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Blockchain Developer • India, India
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