Senior Blockchain Developer

13 hours ago

Chennai, India Samsara (Blockchain Solutions) Full time € 12,00,000

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.

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

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