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CÔNG TY TNHH NEXLAB IT SOLUTIONS

Senior Security Consultant (Offensive)

Posted Updated
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Top 3 Reasons To Join Us

The Job

Lead complex offensive engagements and act as a subject-matter expert in applying advanced tooling and automation to testing and adversary simulation.

Key Responsibilities

  • Plan and execute advanced web/API, infrastructure, cloud, and identity-focused tests; lead red and purple-team exercises.
  • Apply structured processes and specialised tooling to accelerate reconnaissance, vulnerability discovery, exploit chain development, and evidence collection, while maintaining rigorous manual validation.
  • Produce clear, actionable reporting, including exploitation narratives, business-impact descriptions, and prioritised remediation guidance.
  • Capture mature attack paths and engagement patterns as reusable playbooks and internal lab scenarios.
  • Collaborate with defensive teams to validate detections and inform new rules, thresholds, and hunting hypotheses.
  • Provide coaching and day-to-day guidance to Consultants and Associates; review their work products.
  • Support technical pre-sales by contributing to scopes, assumptions, and level-of-effort estimates.

Your Skills and Experience

  • 4–7 years in penetration testing or red-team roles, including lead responsibilities.
  • Strong offensive skills across at least two areas such as web/app, cloud, Active Directory, phishing/social engineering, or mobile.
  • Experience designing or using enhanced tooling for code review, recon, exploit development, or documentation.
  • Proficiency in at least one scripting language (for example Python, Go, or similar).
  • Relevant certifications (OSCP, OSWE, OSEP, or equivalent) are desirable.

Key KPIs

  • Number and impact of critical/high findings on led engagements.
  • Client satisfaction ratings and repeat business on offensive projects.
  • Quantity and quality of playbooks, labs, and internal methodologies contributed.
  • Feedback from junior staff on mentoring and technical leadership.

Why You'll Love Working Here

  • Work on system-level, high traffic architecture
  • Opportunity to grow into Tech Lead in distributed systems
  • Modern tech stack: Security, Python, Cloud, Golang

Skills

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