Blockchain Security Auditor

Placements24; Durban; Hybrid; ZAR 600,000 - 900,000; Full time

Benefits offered by this job

Competitive contract rates

Flexible remote work

Work on high-profile blockchain proj.

Long-term engagements

Job summary

Placements24 seeks an experienced Blockchain Security Auditor to perform in-depth security assessments of smart contracts, dApps, and blockchain protocols. The role is remote with strong ties to the South African market and collaborations across various blockchain projects.

You will utilize static/dynamic analysis, code reviews, and fuzzing to identify vulnerabilities, producing detailed reports and actionable remediation recommendations. Strong English communication is essential.

Qualifications

• Bachelor's degree in Computer Science, Cybersecurity, or related field or equivalent experience.
• Proven experience as a security auditor, pentester, or smart contract auditor.
• Knowledge of common smart contract vulnerabilities (reentrancy, overflow/underflow, unchecked external calls).
• Auditing smart contracts on Ethereum, BSC, Polygon, Solana, etc.
• Strong understanding of cryptography and network security.
• Experience with security analysis tools/frameworks (Slither, Mythril, Foundry, Echidna).
• Excellent analytical and communication skills in English.

Responsibilities

• Perform comprehensive security audits of smart contracts and dApps across platforms.
• Analyze protocols and architectures to identify attack vectors and weaknesses.
• Use static/dynamic analysis, manual review, and fuzzing to find security flaws.
• Develop audit reports with vulnerabilities and remediation steps.
• Collaborate with developers to explain findings and guide secure coding.
• Stay updated on latest threats and best practices in blockchain security.
• Contribute to internal security methodologies and tools.
• Participate in threat modeling and security design reviews.

Skills

Security auditing

Penetration testing

Smart contract auditing

Solidity

Rust

Go

Ethereum

Threat modeling

Code review

English communication

Education

Bachelor's degree

Tools

Slither

Mythril

Foundry

Echidna

Job description

About the Role

Our client, a prominent cybersecurity firm specializing in blockchain technology, is seeking a meticulous and experienced Blockchain Security Auditor. This crucial role is available remotely but requires strong ties to the South African market, with the project focus often encompassing innovations originating from hubs like Durban, KwaZulu-Natal . You will be responsible for conducting in-depth security assessments of smart contracts, decentralized applications (dApps), and blockchain protocols to identify vulnerabilities and ensure the integrity of digital assets and transactions. Your expertise will be vital in safeguarding our clients' projects against exploits and malicious attacks. This is an exciting opportunity to contribute to the security and trustworthiness of the rapidly expanding blockchain ecosystem, working with cutting-edge technologies and a global clientele.

Key Responsibilities

• Perform comprehensive security audits of smart contracts written in various languages (e.g., Solidity, Vyper, Rust) across multiple blockchain platforms.
• Analyze blockchain protocols and dApp architectures to identify potential attack vectors, vulnerabilities, and weaknesses.
• Utilize static and dynamic analysis tools, manual code review techniques, and fuzzing to uncover security flaws.
• Develop detailed audit reports outlining identified vulnerabilities, their potential impact, and actionable recommendations for remediation.
• Collaborate with development teams to explain findings and guide them through the process of securing their code and applications.
• Stay current with the latest security threats, vulnerabilities, and best practices in the blockchain and smart contract security domain.
• Contribute to the development and improvement of internal security auditing methodologies and tools.
• Participate in threat modeling exercises and security design reviews for new blockchain projects.
• Maintain the highest level of confidentiality and ethical standards throughout all auditing engagements.

Requirements

• Bachelor's degree in Computer Science, Cybersecurity, or a related field, or equivalent demonstrable experience.
• Proven experience as a security auditor, penetration tester, or smart contract auditor.
• In-depth knowledge of common smart contract vulnerabilities (e.g., reentrancy, integer overflow/underflow, unchecked external calls).
• Proficiency in auditing smart contracts on platforms like Ethereum, Binance Smart Chain, Polygon, Solana, etc.
• Strong understanding of blockchain principles, cryptography, and network security fundamentals.
• Experience with security analysis tools and frameworks (e.g., Slither, Mythril, Foundry, Echidna).
• Excellent analytical, problem-solving, and critical-thinking skills.
• Ability to write clear, concise, and professional audit reports.
• Strong communication skills, able to articulate complex security issues effectively in English.
• Familiarity with development in languages like Solidity, Rust, or Go is a significant advantage.

Benefits

• Competitive contract rates, reflecting your expertise and value.
• Flexible remote working arrangement, allowing for work-life balance.
• Opportunity to work on a diverse range of high-profile blockchain projects.
• Gain extensive experience across various blockchain ecosystems and applications.
• Be part of a specialized and highly respected security auditing team.
• Direct impact on enhancing the security posture of the global blockchain industry.
• Continuous learning opportunities through exposure to novel threats and technologies.
• Potential for long-term engagement and repeat projects based on performance.