Smart Contract / Backend Engineer
Superlendvellore, India2 days ago
Job descriptionBuild and maintain services that interact with blockchain networks and DeFi protocols. Develop APIs and backend logic for data aggregation, market analytics, and user-facing features. Work with caching layers, queues, and databases (PostgreSQL, DynamoDB, Redis, etc.) to optimize performance. Design and implement subgraphs using The Graph or custom indexers to power analytics and dashboards. Ensure data pipelines are robust, efficient, and scalable. Maintain high data accuracy for protocol metrics such as TVL, APY, LTV, and user positions. Work closely with front-end and protocol teams to ensure seamless integration of on-chain and off-chain components. Follow best practices in software design, testing, documentation, and security. Participate in code reviews and mentor junior engineers. Experience : 2–4 years of experience in software development with at least 1–2 years in DeFi-related roles. Smart Contracts : Strong knowledge of Solidity, common DeFi standards (ERC-20, ERC-4626, etc.), gas optimization, and security best practices. Backend Development : Proficiency in Node.js (NestJS preferred), Rust, or Go. DeFi Knowledge : Familiarity with lending, borrowing, AMMs, staking, bridging, and yield optimization strategies. DeFi Math Expertise : Strong understanding of financial math used in DeFi protocols, including interest rate models and bonding curves, AMM mathematics, slippage checks, liquidity simulations, and price impact calculations. Indexing & Data Pipelines : Hands-on experience with The Graph, custom indexers, and integrating blockchain data into backend services. Database & Infra : Experience with relational and NoSQL databases, caching layers, and message queues. APIs & Integrations : Experience designing REST / GraphQL APIs that serve real-time protocol and market data. Security & Testing : Understanding of smart contract vulnerabilities and mitigation strategies. Strong debugging, problem-solving, and communication skills. Drop us a short note at with the subject “Smart Contract Dev – ” and include your resume, GitHub, or links to past work. If you’ve shipped products, audited contracts, or built something cool onchain, we’d love to see it. A few lines on what excites you about Superlend would be great too.
About Superlend
At Superlend , we’re building next-generation DeFi infrastructure and applications, enabling seamless access to yield, lending, and cross-chain opportunity aggregation.
Backed by leading crypto funds and partners like Polygon and Tezos , we manage $50M+ TVL across curated markets, looping vaults, and cross-chain yield strategies.
We’re a small, fast-moving, engineering-heavy team obsessed with designing robust, composable financial primitives that power the future of on-chain lending.
If you’re curious, creative, and want to build real DeFi products with real users, come join us.
The Role :
We’re looking for a Smart Contract + Backend Engineer who will design, build, and maintain core DeFi protocols and the supporting backend services. You will work closely with our product, protocol, and data teams to deliver scalable and secure on-chain and off-chain components, as well as ensure reliable data indexing and APIs for front-end applications and analytics.
What You’ll Do
Smart Contract Development :
- Design, implement, and test secure and efficient smart contracts (Solidity).
- Contribute to protocol upgrades, new DeFi primitives, and cross-chain integrations.
- Write thorough unit, integration, and fuzz tests to ensure contract security and reliability.
Backend Engineering :
Data Indexing & Subgraphs :
Collaboration & Code Quality :
Qualifications :
How To Apply
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Backend Engineer • vellore, India
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