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Smart Contract Auditors

Job in Greater London, London, Greater London, EC1A, England, UK
Listing for: Cryptosec
Full Time, Seasonal/Temporary, Contract position
Listed on 2026-01-13
Job specializations:
  • IT/Tech
    Blockchain / Web3, Cybersecurity, Data Security
Job Description & How to Apply Below
Location: Greater London

Smart Contract Auditors

Join a role at Cryptosec
—a cybersecurity company focused on the decentralized, programmable future. We are looking for experienced Smart Contract Auditors to review security of smart contracts and protocols within the DeFi ecosystem (primarily Solidity contracts).

Job Details

Job Category: Cybersecurity
Job Type: Full Time
Job Location: Dubai, Fully Remote, Hong Kong, London, New York, Singapore, Vancouver, Zug

What you will do
  • Review security of various smart contracts and protocols within the DeFi ecosystem.
  • Identify vulnerabilities, design flaws, quality improvement opportunities, and ways to mitigate future risk.
  • Write clear and concise reports and “action-steps” for developers to mitigate and fix any issues discovered.
  • Interact with developers and key stakeholders when identifying and handling security issues.
Requirements
  • Demonstrated expertise with Solidity, EVM, and blockchain.
  • Experience developing and building on DeFi protocols and smart contracts.
  • Proven experience writing smart contracts and familiarity with Solidity libraries.
  • Good understanding of the Ethereum blockchain and dApp architecture.
  • Understanding of Layer 2 solutions and cross-chain bridge technologies.
  • Experience with compiler, parser, and assembler of smart contract bytecode.
  • Static analysis and dynamic analysis of bytecode and source code.
  • Experience with auditing smart contracts and assessing smart contract security risks.
  • Knowledge of best practices for smart contract development.
  • Experience with discovering vulnerabilities at design/system level.
  • Knowledgeable about smart contract vulnerability and hands‑on experience to exploit these vulnerabilities.
  • Solid understanding of relevant common vulnerability classes and hands‑on experience with exploiting these vulnerabilities.
  • Knowledgeable on various security analysis tools on smart contract and hands‑on experience to set up and use them.
  • Focus on improving real-world security, not compliance.
  • Pro‑active problem solver.
  • Strong communication and collaboration skills.
  • Strong sense of ownership.
  • Proficient English communication, both written and spoken.
  • Fuzzing and formal verification as a big plus.
You belong here

Our culture values curiosity, passion, continuous learning, accountability, honesty, diversity of thought, and constructive conflict. We encourage candidates from all backgrounds and are committed to creating an inclusive and diverse team.

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