Blockchain Security Analyst

Placements24; Mbombela (Nelspruit); Hybrid; ZAR 600,000 - 1,000,000; Full time

Benefits offered by this job

Competitive salary and comprehensive福利

Flexible working arrangements

Generous annual leave

Access to advanced security tools and 

Team-based, collaborative environment

Job summary

Placements24 seeks a Blockchain Security Analyst to identify and mitigate security risks across our blockchain ecosystem, including smart contracts, dApps, and network infrastructure. You will safeguard assets and user data, ensuring platform integrity and trust.

You will conduct audits, monitor threats, and collaborate with developers to embed security best practices. The role requires a proactive, detail‑oriented professional with relevant certifications and strong cryptography knowledge.

Qualifications

• Bachelor's degree required in a related field.
• Strong focus on blockchain and cryptocurrency security; practical audit experience welcomed.
• Familiarity with Ethereum, Solidity and development tools is preferred.

Responsibilities

• Conduct security audits and vulnerability assessments of smart contracts and dApps.
• Analyze blockchain transaction patterns to detect fraud or exploits.
• Develop and implement security monitoring tools for blockchain networks.
• Investigate incidents, determine root causes, and propose remediations.
• Research emerging blockchain threats and provide proactive defenses.
• Collaborate with developers to embed security into the lifecycle.
• Create security policies, guidelines, and documentation for operations.
• Perform penetration testing on blockchain infrastructure and apps.
• Stay updated on security trends, tools, and techniques.

Skills

Blockchain security

Smart contract auditing

Ethereum & Solidity

Vulnerability assessment

Penetration testing

Security tools & analysis

Cryptography

Analytical thinking

Education

Bachelor's degree in Cybersecurity, Computer Science, Information Technology, or related field

Tools

Security analysis tools

Job description

About the Role

Our client is at the forefront of blockchain innovation, dedicated to building secure and reliable decentralized platforms. We are currently seeking a vigilant and detail‑oriented Blockchain Security Analyst to join our dynamic team in Nelspruit, Mpumalanga. In this crucial role, you will be responsible for identifying and mitigating security risks across our blockchain ecosystem, including smart contracts, dApps, and underlying network infrastructure. Your expertise will be vital in safeguarding our assets and user data, ensuring the integrity and trustworthiness of our platforms. If you have a deep understanding of cybersecurity principles, a keen eye for vulnerabilities, and a passion for the evolving world of cryptocurrency, this is an exciting opportunity to contribute to a secure blockchain future. We are committed to maintaining the highest security standards in all our operations and are looking for a proactive individual to uphold these principles. Your work will directly impact user trust and platform stability.

Key Responsibilities

• Conduct in-depth security audits and vulnerability assessments of smart contracts and decentralized applications.
• Analyze blockchain transaction patterns to detect fraudulent activities or potential exploits.
• Develop and implement security monitoring tools and procedures for blockchain networks.
• Investigate security incidents, determine root causes, and recommend remediation strategies.
• Research emerging blockchain threats and vulnerabilities, providing proactive defense mechanisms.
• Collaborate with development teams to integrate security best practices into the development lifecycle.
• Create security policies, guidelines, and documentation for blockchain operations.
• Perform penetration testing on blockchain infrastructure and applications.
• Stay updated on the latest security trends, tools, and techniques in the blockchain space.
• Educate team members on blockchain security best practices and awareness.
• Contribute to the design of secure blockchain architectures and protocols.
• Respond to and manage security alerts and escalations.

Requirements

• Bachelor's degree in Cybersecurity, Computer Science, Information Technology, or a related field.
• Proven experience in cybersecurity, with a strong focus on blockchain and cryptocurrency security.
• Expertise in smart contract auditing, including identifying common vulnerabilities (e.g., reentrancy, integer overflow/underflow).
• Familiarity with blockchain technologies such as Ethereum, Solidity, and relevant development tools.
• Knowledge of common attack vectors and defense strategies in distributed systems.
• Experience with security analysis tools and techniques.
• Understanding of cryptography principles and their application in blockchain.
• Excellent analytical and problem-solving skills with a high degree of attention to detail.
• Strong written and verbal communication skills.
• Ability to work independently and as part of a collaborative team.
• Relevant certifications (e.g., CISA, CISSP, OSCP) are a plus.
• Passion for blockchain technology and its security implications.

Benefits

• Competitive salary and comprehensive benefits package.
• Opportunity to work with a leading company in the blockchain space.
• Exposure to cutting‑edge blockchain security challenges.
• Professional development and training opportunities.
• A supportive and collaborative work environment.
• Flexible working arrangements.
• Generous annual leave.
• Access to advanced security tools and resources.
• Contribution to the security and integrity of a global blockchain ecosystem.
• Regular team social events and engagement activities.