Senior Smart Contract Engineer / Blockchain Developer
KilnÎle-de-France, France
France
Responsibilities
- Design, develop, and deploy smart contracts on EVM-compatible blockchains: 6+ years of experience
- Write comprehensive and well-structured documentation for smart contracts and their functionalities.
- Write in-depth test suite including unit tests, e2e tests, fork tests & invariant tests using Foundry’s best practices.
- Participate in audits related to the smart contract codebases.
- Provide technical guidance and mentorship to junior developers and team members.
- Participate in product governance and incident response processes with the rest of the team.
- Stay updated with the latest industry trends and technologies in blockchain and smart contract development.
- Collaborate with front-end and back-end developers to integrate smart contracts with web and mobile applications.
- Stack:
- Smart-contract: Solidity + Foundry
- Proficient in Solidity and strong understanding of the Ethereum Virtual Machine (EVM).
- 6+ years of experience with smart contract development tools ideally including Foundry but any experience is valued (Truffle, Hardhat, Remix).
- Previous work with decentralized finance (DeFi) projects.
- Experience in conducting audits with top-tier auditing firms (Spearbit, Trail of Bits, Sigma Prime, …)
- Strong understanding of blockchain technology and decentralized architectures.
- Knowledge of smart contract security practices and common vulnerabilities.
- Excellent problem-solving skills and attention to detail.
- Strong communication and collaboration skills.
- Fluent (written and spoken) in English.
Nice-to-have
- Experience with Layer 2 scaling solutions such as Optimism, Arbitrum, Base, Zksync ...
- Contributions to open-source projects in the blockchain space.
- Smart contract related tooling skills for scripting purposes.
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FAQ
- Is the Senior Smart Contract Engineer / Blockchain Developer position at Kiln remote?
- Yes. This role was posted on Remote Backend Jobs, a job board that lists exclusively fully remote positions.
- When was this Senior Smart Contract Engineer / Blockchain Developer job posted?
- This listing was posted on January 2, 2026 and is still open for applications.
- How do I apply for the Senior Smart Contract Engineer / Blockchain Developer position at Kiln?
- Use the apply button on this page — it takes you directly to the employer’s application page.
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