Senior Blockchain Security Engineer

Senior Blockchain Security Engineer
Employment: Full-time via MLabs
Engagement: Contracted to a UAE-based enterprise blockchain / fintech client
Location: Remote (Eastern Europe / MENA / India preferred)

Job Description
MLabs is hiring a Senior Blockchain Security Engineer to support a large-scale blockchain and financial technology program for a UAE-based enterprise client.
You will be responsible for securing smart contracts, blockchain integrations, and protocol-level components within a custom enterprise blockchain ecosystem. This role requires deep expertise in smart contract vulnerabilities, secure architecture design, and threat modeling in decentralized systems.
The ideal candidate has hands-on experience auditing smart contracts and identifying vulnerabilities in production blockchain environments.

Responsibilities

• Conduct security reviews and audits of smart contracts and blockchain components
• Identify, document, and mitigate vulnerabilities in decentralized systems
• Perform threat modeling and risk assessments
• Collaborate with smart contract, protocol, and backend teams to improve security posture
• Implement secure development standards and best practices
• Support incident response and vulnerability remediation
• Contribute to security documentation and review processes

Requirements:
• 5+ years of software engineering or security engineering experience
• Strong experience auditing Solidity smart contracts
• Deep understanding of common blockchain vulnerabilities (reentrancy, overflow, access control, front-running, etc.)
• Experience with security analysis tools (e.g., Slither, Mythril, Foundry, etc.)
• Strong understanding of blockchain architecture and transaction lifecycle
• Experience working in production blockchain environments

Preferred

• Experience participating in formal smart contract audits
• Experience with Layer-1 or Layer-2 security
• Experience in fintech or regulated environments
• Background in application security or penetration testing
• Experience working in distributed remote teams

Benefits:
• Competitive international compensation
• Remote-first work model
• Long-term engagement on an enterprise blockchain platform
• Opportunity to secure advanced blockchain infrastructure
• Career growth within MLabs’ global engineering network

Due to the high volume of applications we anticipate, we regret that we are unable to provide individual feedback to all candidates. If you do not hear back from us within 4 weeks of your application, please assume that you have not been successful on this occasion. We genuinely appreciate your interest and wish you the best in your job search.

Commitment to Equality and Accessibility:

At MLabs, we are committed to offer equal opportunities to all candidates. We ensure no discrimination, accessible job adverts, and providing information in accessible formats. Our goal is to foster a diverse, inclusive workplace with equal opportunities for all. If you need any reasonable adjustments during any part of the hiring process or you would like to see the job-advert in an accessible format please let us know at the earliest opportunity by emailing [email protected].

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