Senior Blockchain Engineer

2 days ago

Chennai, Tamil Nadu, India Samsara Full time ₹ 6,00,000 - ₹ 12,00,000 per year

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. The candidate must be flexible, able to work in a small team and for long hours, for the benefit of Samsara. Depending upon your contribution to the development of the company, employees will be rewarded with ownership in the company through generous ESOPs.

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.

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 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.

What we offer

  • 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.
  • Hands-on role — influence product, security and go-to-market decisions from day one.

Interview process

  • Quick screening call (20–30m) — background & motivation.
  • Technical interview — Solidity & Foundry, system design (1–2 sessions).
  • Final culture/compensation discussion.

Job Types: Full-time, Permanent

Base Pay: ₹600, ₹1,200,000.00 per year

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