Senior/Lead Security Engineer, Red team

We are seeking a dedicated and hands-on Lead Security Engineer to spearhead our Red Team and Offensive Security initiatives. In this role, you won't just be running scans; you will be the primary architect of our adversarial simulation strategy, taking full ownership of penetration testing, red teaming, and the emerging frontier of AI Security. What you'll be doing:

• Strategic Red Teaming & Pentesting
• Define, execute, and manage the annual offensive security roadmap, including internal and external penetration tests.
• Design complex red team campaigns that simulate real-world TTPs (Tactics, Techniques, and Procedures) to test our detection and response capabilities.
• Beyond discovery, you will partner with engineering teams to provide actionable remediation guidance and validate fixes.
• AI Security Initiative
• Lead security assessments for AI/ML deployments, focusing on prompt injection, data poisoning, model inversion, and membership inference attacks.
• Integrate AI-specific security frameworks (e.g., OWASP Top 10 for LLMs, MITRE ATLAS) into our standard security lifecycle.
• Develop specialized playbooks for "jailbreaking" and stress-testing our proprietary AI agents and infrastructure.
• Leadership & Mentorship
• Evaluate and select third-party security vendors and bug bounty platforms to augment internal efforts.
• Act as the subject matter expert for the HODs and engineering leadership on the evolving threat landscape.
• Oversee the creation of custom scripts and automated offensive tools to scale our testing capabilities.

• 5+ years of working experience in related work roles mentioned above.
• Degree in Computer Science, Information Systems, Engineering or equivalent
• Understanding and/or experience working in a Cryptocurrency/Blockchain/Fintech/Finance Trading domain.
• Ability to translate technical security issues into clear actions for executives and engineers.
• Excellent communication, presentation and planning skills.
• Fluent written and spoken English.
• Nice to have:
• Prior experience in a crypto exchange, blockchain company, or high-risk trading platform.
• Relevant certifications: leadership (CISSP, CISM, etc), offensive (OSCP, OSWE, etc), defensive (GSOM, GCIH, etc) and cloud security (CCSP, AWS).

• MacBook or high-end laptop for working.
• Full coverage of social insurance.
• Premium health care for you and your family members.
• Full 100% salary during probationary period.
• Working in a professional, friendly, well-equipped workspace with both foreigners and Vietnamese.
• Extensive on job training; will always have chances to work with new emerging technologies.
• Friendly and fun start-up work culture.

Find out more about Coinhako here [ and don't forget to visit our Careers Page [

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