Information Security Engineer; Vulnerability Management Security Clearance

Position: Staff Information Security Engineer (Vulnerability Management) with Security Clearance
About Zscaler Zscaler accelerates digital transformation so our customers can be more agile, efficient, resilient, and secure. Our cloud native Zero Trust Exchange platform protects thousands of customers from cyberattacks and data loss by securely connecting users, devices, and applications in any location. Here, impact in your role matters more than title and trust is built on results. We believe in transparency and value constructive, honest debate-we're focused on getting to the best ideas, faster.

We build high-performing teams that can make an impact quickly and with high quality. To do this, we are building a culture of execution centered on customer obsession, collaboration, ownership and accountability. We value high-impact, high-accountability with a sense of urgency where you're enabled to do your best work and embrace your potential. If you're driven by purpose, thrive on solving complex challenges and want to make a positive difference on a global scale, we invite you to bring your talents to Zscaler and help shape the future of cybersecurity.

Role We are looking for a Staff Information Security Engineer to join our Engineering team. This is a fully onsite role based in the Crystal City / Arlington, VA Area, reporting to the Senior Manager of Information Security Engineering. You will operate as a vulnerability management engineer inside the U.S. Federal IL6 (SCIF) environment. This role is critical to maintaining our multitenant architecture and global security footprint, ensuring we enable organizations worldwide to harness speed and agility while operating strictly within a U.S. SCIF and adhering to one-way diode transfer protocols.

What you'll do (Role Expectations)
* Design and execute authenticated and unauthenticated network and host scanning using IL6-approved tools like Tenable.sc or Nessus Manager within air-gapped environments
* Build Python, Go, or Power Shell automations for scan orchestration, asset onboarding, policy tuning, and diode-ready reporting formats
* Drive collaboration with IL6 service owners to eliminate exploitable risks and manage comprehensive patch and hardening campaigns
* Produce weekly and monthly reporting aligned to IL6 program cadence and diode data transfer policies
* Maintain essential documentation including runbooks, SOPs, exception governance, and change control processes within the SCIF environment Who You Are (Success Profile)
* You thrive in ambiguity. You're comfortable building the path as you walk it. You thrive in a dynamic environment, seeing ambiguity not as a hindrance, but as the raw material to build something meaningful.
* You act like an owner. Your passion for the mission fuels your bias for action. You operate with integrity because you genuinely care about the outcome. True ownership involves leveraging dynamic range: the ability to navigate seamlessly between high-level strategy and hands-on execution.
* You are a problem-solver. You love running towards the challenges because you are laser-focused on finding the solution, knowing that solving the hard problems delivers the biggest impact.
* You are a high-trust collaborator. You are ambitious for the team, not just yourself. You embrace our challenge culture by giving and receiving ongoing feedback-knowing that candor delivered with clarity and respect is the truest form of teamwork and the fastest way to earn trust.
* You are a learner. You have a true growth mindset and are obsessed with your own development, actively seeking feedback to become a better partner and a stronger teammate. You love what you do and you do it with purpose. What We're Looking for (Minimum Qualifications) U.S. citizenship and a current, active U.S. Top Secret (TS) clearance and 5+ years of experience in one or more of the following
* Vulnerability Management
* Experience with Tenable.sc/Nessus Manager or equivalents
* Experience with CSPM concepts and/or Web Application Scanning (WAS) methodologies with solid understanding of risk-based prioritization (CVSS, EPSS), remediation lifecycle, and SLA governance
* Scripting skills in Python, Go, or Power Shell for automation in disconnected environments What Will Make You Stand Out (Preferred Qualifications)
* DoD 8570/8140 IAT Level II certification such as Security+ CE, GSEC, SSCP, or CySA+
* Understanding of cloud and container platforms adapted to classified environments including AWS C2S/SC2S constructs, ECS/Kubernetes, and VM hardening
* Exposure to FedRAMP High/Moderate operations and ticketing management in isolated environments using Jira or Service Now #LI-Onsite #LI-KM9 Zscaler's salary ranges are benchmarked and are determined by role and level. The range displayed on each job posting reflects the minimum and maximum target for new hire salaries for the position across all US locations and could be higher or lower based on a multitude of factors, including job-related skills, experience, and relevant education or training.

The base salary range…