Blockchain Security Auditor

Placements24; LegKraal Gate; Hybrid; ZAR 600,000 - 900,000; Full time

Benefits offered by this job

Hybrid work arrangement

Professional development opportunities

Job summary

Placements24 is seeking an experienced Blockchain Security Auditor to join a specialized blockchain security consultancy in Mahikeng, North West, ZA. The role requires auditing smart contracts, dApps, and protocols to identify vulnerabilities and ensure asset security.

You will analyze reentrancy, overflows, DoS, and logic flaws, perform static/dynamic analyses, and report findings with actionable remediation. Hybrid work and ongoing professional development are offered.

Qualifications

• Proven experience in cybersecurity with blockchain security focus.
• Proficiency in Solidity and Vyper.
• Strong understanding of cryptography and blockchain fundamentals.
• Experience with Mythril, Slither, Echidna.
• Knowledge of common smart contract vulnerabilities and secure coding patterns.
• Excellent analytical and communication skills.
• Ability to manage multiple audit engagements independently.
• Bachelor's degree or equivalent practical experience.

Responsibilities

• Conduct comprehensive security audits of smart contracts and dApps.
• Identify and analyze vulnerabilities including reentrancy, overflows, DoS, and logic flaws.
• Perform static and dynamic code analysis on blockchain codebases.
• Assess security of dApp architectures and integration points.
• Develop deep understanding of current blockchain threats and exploits.
• Provide detailed audit reports with findings and remediation steps.
• Explain security issues to clients and guide remediation.
• Contribute to internal security tool development and best practices.
• Stay current with industry standards in smart contract security.
• Assist in incident response and post-mortem analyses when required.

Skills

Blockchain security

Smart contract languages

Cryptography fundamentals

Security analysis tools

Vulnerability knowledge

Analytical thinking

Technical reporting

Education

Bachelor's degree in CS/Cybersecurity or related field

Tools

Mythril

Slither

Echidna

Job description

About the Role

Our client, a specialized blockchain security consultancy, is seeking an experienced Blockchain Security Auditor to join their team. This role is based in Mahikeng, North West, ZA , and operates on a hybrid model, requiring a balance of in-office collaboration and remote flexibility. You will be responsible for meticulously examining smart contracts, decentralized applications (dApps), and blockchain protocols to identify vulnerabilities and ensure the security and integrity of client assets. This position requires a deep understanding of smart contract languages, common attack vectors, and robust security analysis techniques. Join a team dedicated to fortifying the blockchain ecosystem against emerging threats.

Key Responsibilities

• Conduct comprehensive security audits of smart contracts written in languages like Solidity and Vyper.
• Identify and analyze potential vulnerabilities, including reentrancy attacks, integer overflows, denial-of-service, and logic flaws.
• Perform static and dynamic code analysis on blockchain codebases.
• Assess the security of dApp architectures and their integration points.
• Develop and maintain a deep understanding of current and emerging blockchain threats and exploits.
• Provide detailed audit reports outlining findings, risk assessments, and actionable remediation recommendations.
• Collaborate with clients to explain security issues and guide them through the mitigation process.
• Contribute to the development of internal security tools, methodologies, and best practices.
• Stay current with industry standards and best practices in smart contract security.
• Assist in incident response and post-mortem analysis when required.

Requirements

• Proven experience in cybersecurity, with a strong specialization in blockchain security and smart contract auditing.
• Proficiency in smart contract programming languages (e.g., Solidity, Vyper).
• Deep understanding of blockchain fundamentals, cryptography, and decentralized systems.
• Experience using security analysis tools and frameworks (e.g., Mythril, Slither, Echidna).
• Knowledge of common smart contract vulnerabilities and secure coding patterns.
• Excellent analytical, problem-solving, and critical thinking skills.
• Strong written and verbal communication skills, with the ability to clearly articulate technical findings.
• Ability to work independently and manage multiple audit engagements effectively.
• Bachelor's degree in Computer Science, Cybersecurity, or a related field, or equivalent practical experience.
• Experience with formal verification techniques is a plus.

Benefits

• Competitive contract rates commensurate with experience.
• Hybrid work arrangement offering flexibility.
• Opportunity to work with a variety of cutting-edge blockchain projects.
• Professional development and continuous learning in a specialized field.
• Collaborative and expert team environment in Mahikeng, North West, ZA .
• Exposure to diverse clients and challenging security scenarios.
• Flexible working hours to accommodate project needs.
• Networking opportunities within the blockchain security community.