Senior Smart Contract Auditor

Placements24; Gauteng; On-site; ZAR 900,000 - 1,500,000; Full time

Benefits offered by this job

Competitive salary

Health benefits

Professional development opportunities

State-of-the-art Pretoria office

Job summary

Placements24 in Pretoria is seeking a Senior Smart Contract Auditor for a renowned cybersecurity firm specializing in blockchain. You will scrutinize Solidity-based contracts and blockchain protocols to uncover vulnerabilities and security flaws, ensuring robust decentralized applications and financial systems.

You will work with a skilled security team, develop and apply testing tools, and deliver detailed client reports with actionable remediation steps.

Qualifications

• The candidate has proven experience auditing smart contracts for security.
• Strong knowledge of Solidity and blockchain protocols.
• Familiarity with auditing tools and secure coding practices.
• Excellent analytical and communication skills.

Responsibilities

• Conduct audits of smart contracts to identify vulnerabilities.
• Analyze reentrancy, overflows/underflows, and access control weaknesses.
• Perform static and dynamic analysis using auditing tools.
• Prepare detailed reports with remediation steps for clients.
• Mentor junior auditors and share best practices.

Skills

Solidity

Blockchain security

Auditing tools

Static analysis

Problem solving

Education

Bachelor's degree in CS/C Cybersecurity or related field

Tools

Slither

Mythril

Echidna

Foundational

Job description

About the Role

Our client, a prestigious cybersecurity firm specializing in blockchain technology, is actively recruiting a Senior Smart Contract Auditor for their office in Pretoria, Gauteng . In this critical role, you will be responsible for meticulously examining smart contracts and blockchain protocols to identify vulnerabilities, security flaws, and potential exploits. Your expertise will be essential in ensuring the integrity and security of decentralized applications and financial systems built on blockchain. You will work alongside a team of highly skilled security professionals, contributing to the safety and trust of the burgeoning blockchain ecosystem. This is a demanding yet rewarding position for individuals passionate about blockchain security and possess a keen eye for detail.

Key Responsibilities

• Conduct comprehensive security audits of smart contracts written in Solidity and other relevant languages.
• Identify and analyze vulnerabilities such as reentrancy attacks, integer overflows/underflows, access control issues, and denial-of-service vectors.
• Perform static and dynamic analysis of smart contract code, utilizing various auditing tools and methodologies.
• Develop and implement custom security testing tools and frameworks.
• Provide detailed, actionable reports to clients outlining identified risks, potential impact, and recommended remediation steps.
• Stay up-to-date with the latest smart contract vulnerabilities, attack vectors, and security best practices in the blockchain space.
• Collaborate with development teams to understand contract logic and architecture.
• Contribute to the development of internal security standards and best practices for smart contract development.
• Mentor junior auditors and share knowledge across the security team.
• Present audit findings to clients and technical teams.

Requirements

• Proven experience as a Smart Contract Auditor, Security Researcher, or in a similar role focused on blockchain security.
• Deep understanding of smart contract development, particularly in Solidity.
• Expertise in identifying and mitigating common smart contract vulnerabilities.
• Proficiency with blockchain auditing tools and frameworks (e.g., Slither, Mythril, Echidna, Foundational).
• Strong knowledge of cryptography, consensus mechanisms, and blockchain protocols.
• Experience with formal verification methods is highly desirable.
• Excellent analytical and problem-solving skills with exceptional attention to detail.
• Strong written and verbal communication skills, with the ability to articulate complex technical findings clearly.
• Bachelor's degree in Computer Science, Cybersecurity, or a related technical field, or equivalent practical experience.
• Active participation in the cybersecurity or blockchain community (e.g., bug bounty programs, CTFs) is a plus.

Benefits

• Our client offers a highly competitive salary, comprehensive health and wellness benefits, and generous performance-based bonuses.
• Employees have access to continuous professional development opportunities, including specialized training and conference attendance.
• The Pretoria office is a state-of-the‑art facility offering a secure and professional working environment.