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Senior Blockchain Developer
Samsara (Blockchain Solutions)Chennai, Tamil Nadu, India1 day ago
Job description≥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. Experience with Account Abstraction / ERC-4337 and paymaster patterns. Experience with OpenZeppelin, 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 GitHub Actions / CI and Docker deployments. Meaningful equity for early hires (negotiable). Up to ₹12 LPA depending on experience. Opportunity to design and ship novel DeFi 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. 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.
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 / WebSockets).
- 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.
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Blockchain Developer • Chennai, Tamil Nadu, India
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