Senior blockchain developer

4 weeks ago

Chennai, India Samsara Full time

We’re hiring an experienced, pragmatic blockchain engineer to own core smart-contract development and backend integration work. You’ll build and test Solidity contracts (Foundry), implement secure MPC/BLS signing integrations, develop robust Python backend services that talk to exchanges and oracles, and help design production-grade token/stablecoin mechanics. You’ll be expected to ship high-quality, audited code and iterate quickly with product and security teams. What you’ll do Design, develop and maintain Solidity smart contracts (wallets, vaults, stablecoin logic, tokenomics). Write thorough unit & integration tests using Foundry ; fuzzing and property tests a plus. Integrate smart contracts with Python backend services (attestations, session tokens, keeper/monitoring services). Implement and integrate MPC/BLS signing flows with the backend and client SDKs. Integrate with third-party APIs: price oracles, DEXs, CEXs, fiat on/off-ramps (REST/Web Sockets). Build secure mint/burn, collateral, liquidation, and fee systems for a stablecoin product. Hardening, code review, working with auditors; help prepare audit packs and remediation. Help run CI/CD, deployments, and maintain release processes for mainnet/testnets. Mentor junior devs and drive engineering best practices. Must-have ≥5 years professional experience in blockchain development. Strong Solidity skills and production experience writing & deploying EVM contracts. Deep Foundry experience (writing tests, scripts, fuzzing). Strong backend experience in Python (building API services, job/worker systems). Experience integrating with CEX/DEX APIs and oracles. Solid understanding of token mechanics, stablecoin design, and collateralized lending (LTV, liquidation). Familiarity with MPC/TSS and/or BLS signing workflows (practical integration experience preferred). Security-first mindset: experience with audits, threat modeling and secure development. Excellent problem-solving, communication skills, and ability to work autonomously in a startup environment. Nice-to-have Experience with Account Abstraction / ERC-4337 and paymaster patterns. Experience with Open Zeppelin, Clones (EIP-1167), UUPS/Beacon upgrade patterns. Frontend exposure (JS/TS) or experience building SDKs or wallet integrations. Experience with Chainlink or other oracle networks. Familiarity with Git Hub Actions / CI and Docker deployments. What we offer Meaningful equity for early hires (negotiable). Up to ₹12 LPA depending on experience. Opportunity to design and ship novel De Fi primitives used by everyday people. Flexible/hybrid working arrangement, supportive team, and fast decision-making. Hands-on role — influence product, security and go-to-market decisions from day one. Interview process (typical) Quick screening call (20–30m) — background & motivation. Technical interview — Solidity & Foundry, system design (1–2 sessions). Live/Take-home challenge — small Foundry test + Python integration task. Final culture/compensation discussion.

  • Senior Blockchain Developer

    4 weeks ago

    Chennai, India Samsara (Blockchain Solutions) Full time

    We’re hiring an experienced, pragmatic blockchain engineer to own core smart-contract development and backend integration work. You’ll build and test Solidity contracts (Foundry), implement secure MPC/BLS signing integrations, develop robust Python backend services that talk to exchanges and oracles, and help design production-grade token/stablecoin...

  • Senior Blockchain Developer

    4 weeks ago

    Chennai, India Samsara (Blockchain Solutions) Full time

    We’re hiring an experienced, pragmatic blockchain engineer to own core smart-contract development and backend integration work. You’ll build and test Solidity contracts (Foundry), implement secure MPC/BLS signing integrations, develop robust Python backend services that talk to exchanges and oracles, and help design production-grade token/stablecoin...

  • Senior Blockchain Developer

    4 weeks ago

    Chennai, India Samsara (Blockchain Solutions) Full time

    We’re hiring an experienced, pragmatic blockchain engineer to own core smart-contract development and backend integration work. You’ll build and test Solidity contracts (Foundry), implement secure MPC/BLS signing integrations, develop robust Python backend services that talk to exchanges and oracles, and help design production-grade token/stablecoin...

  • Senior Blockchain Developer

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    Chennai, India Samsara (Blockchain Solutions) Full time

    We’re hiring an experienced, pragmatic blockchain engineer to own core smart-contract development and backend integration work. You’ll build and test Solidity contracts (Foundry), implement secure MPC/BLS signing integrations, develop robust Python backend services that talk to exchanges and oracles, and help design production-grade token/stablecoin...

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