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Jobs in Singapore   »   Jobs in Singapore   »   Legal / Public / Security Job   »   Blockchain Security Engineer
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Blockchain Security Engineer

Quess Selection & Services Pte. Ltd.

Quess Selection & Services Pte. Ltd. company logo

Key Responsibilities:

  • Perform penetration testing on blockchain networks and smart contracts to identify potential vulnerabilities and exploitable weaknesses.
  • Conduct code audits to ensure smart contracts and blockchain-based applications are secure and free from vulnerabilities.
  • Use advanced techniques for vulnerability mining in blockchain environments, identifying zero-day vulnerabilities and emerging threats.
  • Develop and execute comprehensive security auditing plans for blockchain platforms, including decentralized finance (DeFi) protocols and Layer 2 solutions.
  • Lead the incident response process for security breaches, including root cause analysis, containment, eradication, and post-incident reporting.
  • Implement vulnerability scanning tools to proactively identify security issues in both blockchain and traditional applications.
  • Collaborate with development and engineering teams to define and implement effective risk mitigation strategies.
  • Keep up to date with blockchain security trends, new attack vectors, and cutting-edge tools for identifying and defending against threats.
  • Prepare and deliver detailed security reports, documenting vulnerabilities, attack simulations, and recommended security improvements.
  • Train developers on secure coding practices in blockchain environments, ensuring best practices are followed throughout the development lifecycle.
  • Engage with external security auditors and penetration testers as needed, managing the auditing process for continuous improvement.

Required Skills & Qualifications:


  • Bachelor’s degree in Computer Science, Cybersecurity, or a related field (Master’s degree or certifications such as OSCP, CEH, or CISSP preferred).
  • 5+ years of experience in cybersecurity, with a focus on blockchain technology and security practices.
  • Extensive experience with penetration testing, specifically in blockchain networks, smart contracts, and distributed applications (dApps).
  • Strong background in vulnerability scanning, using tools like Nmap, Nessus, Metasploit, and OWASP ZAP.
  • Proficiency in code auditing, with knowledge of blockchain-specific languages like Solidity, Rust, or Vyper.
  • Familiarity with blockchain consensus algorithms, cryptography, and attack vectors such as Sybil attacks, 51% attacks, and front-running.
  • Hands-on experience with incident response and security event management (SIEM tools such as Splunk or ELK).
  • Strong understanding of security auditing frameworks and risk management methodologies.
  • Knowledge of threat modeling techniques and experience with blockchain security tools like Mythril, Slither, and Remix IDE.
  • Solid understanding of smart contract security vulnerabilities such as reentrancy, integer overflow, and denial of service.
  • Experience in designing and implementing risk mitigation strategies, focusing on secure design and architecture for blockchain applications.
  • Experience with Decentralized Finance (DeFi) protocols and Layer 2 scaling solutions.
  • Familiarity with blockchain platforms such as Ethereum, Hyperledger, Polkadot, or Binance Smart Chain.
  • Knowledge of Zero-Knowledge Proofs (ZKP), Multi-signature wallets, and other advanced cryptographic techniques.
  • Familiarity with cloud security in AWS, Azure, or GCP, especially in blockchain-based deployments.
  • Strong scripting skills in Python, Bash, or Go to automate security testing and incident response tasks.
  • Certifications in blockchain security, such as Certified Blockchain Security Professional (CBSP) or Blockchain Security Expert.

Savita Rai

EA REG NO: R1873418

EA License No:23C2060


Disclaimer: The company is committed to ensuring the privacy and security of your information. By submitting this form, you consent to the collection, processing, and retention of the information you provide. The data collected (which may include your contact details, educational background, work experience and skills) will be used solely for the purpose of evaluating your qualifications for the position you're applying for. Your data will be stored securely and retained for the duration necessary to fulfill our hiring process. If you are not selected for the position, your data will be kept on file for a limited period in case future opportunities arise. You have the right to access, correct, or delete your data at any time by contacting us at Quess Singapore | A Leading Staffing Services Provider in Singapore (quesscorp.sg)


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