Blockchain Security Auditor

Placements24; Sandton; Remote; ZAR 551,000 - 1,240,000; Full time

Benefits offered by this job

High hourly rates

Flexible contract work

Remote-friendly role

On-site collaboration near Sandton (oc

Job summary

Placements24 seeks a Blockchain Security Auditor on a contract basis to perform in-depth security assessments of smart contracts, dApps and protocols. The ideal candidate brings meticulous, analytical skills and solid experience in auditing blockchain systems. Remote-friendly, with potential on-site collaboration for Sandton, Gauteng projects.

You will deliver detailed audit reports, identify vulnerabilities, and guide remediation while keeping pace with evolving threats in the blockchain space.

Qualifications

• Proven experience in smart contract security auditing or blockchain security analysis.
• Deep understanding of smart contract languages (Solidity essential).
• Knowledge of common vulnerabilities and exploit techniques in smart contracts.

Responsibilities

• Perform comprehensive security audits of smart contracts written in Solidity, Vyper, and Rust.
• Identify vulnerabilities, exploits, and architectural weaknesses in dApps and protocols.
• Develop and execute security test cases including fuzzing, static and dynamic analysis.
• Analyze smart contract code for reentrancy, overflow/underflow, front-running.
• Provide detailed audit reports with findings, risks and remediation recommendations.
• Stay up-to-date with security threats, exploits and best practices.
• Collaborate with client teams to explain findings and guide remediation.
• Contribute to internal auditing tools and frameworks.

Skills

Smart contract security auditing

Solidity

Vyper

Rust

Blockchain security analysis

Formal verification

Tools

Debuggers

Analysis frameworks

Formal verification tools

Job description

About the Role

Our client, a leading blockchain security firm, is seeking a highly skilled and experienced Blockchain Security Auditor to join their elite team on a contract basis. You will be responsible for conducting in-depth security assessments of smart contracts, decentralized applications (dApps), and entire blockchain protocols. Your expertise will help clients identify vulnerabilities, mitigate risks, and ensure the integrity and safety of their blockchain assets. This role requires a deep understanding of smart contract languages, common attack vectors, and robust auditing methodologies. The ideal candidate is meticulous, analytical, and passionate about securing the decentralized web. This is a remote-friendly role, with potential collaboration requirements for projects based out of Sandton, Gauteng, ZA .

Key Responsibilities

• Perform comprehensive security audits of smart contracts written in languages like Solidity, Vyper, and Rust.
• Identify vulnerabilities, potential exploits, and architectural weaknesses in dApps and blockchain protocols.
• Develop and execute security test cases, including fuzzing, static analysis, and dynamic analysis.
• Analyze smart contract code for common security flaws (e.g., reentrancy, integer overflow/underflow, front-running).
• Provide detailed audit reports outlining findings, risks, and actionable remediation recommendations.
• Stay up-to-date with the latest security threats, exploits, and best practices in the blockchain space.
• Collaborate with client development teams to explain audit findings and guide them through the remediation process.
• Contribute to the development of internal auditing tools and frameworks.

Requirements

• Proven experience in smart contract security auditing or blockchain security analysis.
• Deep understanding of smart contract development languages (Solidity is essential).
• In-depth knowledge of common smart contract vulnerabilities and exploit techniques.
• Proficiency with blockchain development tools, debuggers, and analysis frameworks.
• Experience with formal verification methods and security testing tools.
• Strong understanding of blockchain fundamentals, cryptography, and network security.
• Excellent analytical, problem-solving, and critical thinking skills.
• Ability to clearly and concisely communicate complex technical findings in written reports.
• Experience with multiple blockchain ecosystems (e.g., Ethereum, Solana, Polygon) is a significant advantage.

Benefits

• High hourly/project-based rates commensurate with expertise.
• Flexible contract work with potential for long-term engagements.
• Opportunity to work with a diverse portfolio of cutting-edge blockchain projects.
• Contribute to enhancing the security of the decentralized ecosystem.
• Work remotely with occasional opportunities for on-site collaboration if based near Sandton, Gauteng, ZA .