Blockchain Security Engineer

Remote / Online - Candidates ideally in
Polokwane, Limpopo, South Africa

Listing for: Placements24

Remote/Work from Home position
Listed on 2026-09-07

Job specializations:

IT/Tech
Cybersecurity, Blockchain / Web3, Information Security & Data Protection, Security Management & Operations

About the Role

Our client is seeking a vigilant and experienced Blockchain Security Engineer to join their remote-first team. This critical role focuses on safeguarding our blockchain infrastructure, smart contracts, and decentralized applications from threats. You will be responsible for conducting security audits, developing robust security protocols, and ensuring the overall integrity and resilience of our blockchain systems. If you possess a deep understanding of cybersecurity principles and have a passion for protecting the evolving crypto ecosystem , this is an exceptional opportunity to make a substantial impact from anywhere.

Key Responsibilities

Perform comprehensive security audits and penetration testing of blockchain networks, smart contracts, and dApps.
Identify vulnerabilities and develop mitigation strategies to enhance system security.
Design and implement security best practices and protocols for blockchain development and deployment.
Monitor blockchain networks for suspicious activities and respond to security incidents.
Develop and maintain security documentation and incident response plans.
Stay ahead of emerging security threats and vulnerabilities in the blockchain and cryptocurrency space.

Requirements

Bachelor's degree in Computer Science, Cybersecurity, or a related field.
Minimum of 5 years of experience in cybersecurity, with at least 2 years focused on blockchain security.
In-depth knowledge of smart contract security, common vulnerabilities (e.g., reentrancy, integer overflows), and mitigation techniques.
Experience with security auditing tools and methodologies for blockchain projects.
Proficiency in one or more smart contract programming languages (e.g., Solidity).
Strong understanding of cryptography, network security, and secure coding practices.

Benefits

Highly competitive salary commensurate with expertise.
Fully remote work arrangement, offering maximum flexibility and autonomy.
Comprehensive health, dental, and vision insurance plans.
Significant budget for continuous learning, certifications, and conference attendance.
Be part of a mission-driven company dedicated to securing the future of Web
3.

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