Senior Information Security Analyst

Advance your career while impacting our national security in cyber as Senior Information Security Analyst at GDIT. Here, technologists have many paths to grow a meaningful career supporting cyber missions and operations across the federal government. MEANINGFUL WORK AND PERSONAL IMPACT As an Information Security Analyst Principal, the work you’ll do at GDIT will directly support the mission of the customer by strengthening enterprise‑level cybersecurity operations and ensuring secure, compliant, and resilient systems across hybrid environments. You will play a crucial role in leading vulnerability management operations and contributing to threat detection and response activities that safeguard mission‑critical assets. Lead enterprise vulnerability management operations, including deployment, configuration, and optimization of Tenable Security Center across Linux/Red Hat environments to ensure the customer maintains a secure posture aligned with DISA STIGs, NSA guidelines, and DoW cybersecurity requirements. Collaborate with engineering, cloud, network, cybersecurity operations, and leadership teams to ensure secure configurations, rapid mitigation of vulnerabilities, and effective POA&M management across on‑prem and Azure IL5/IL6 environments. Drive continuous improvement by analyzing vulnerability data, developing actionable reporting, tuning detection rules, resolving scanner and integration challenges, and enhancing endpoint security and threat‑detection fidelity. Utilize tools such as Tenable Security Center, Microsoft Defender for Endpoint, Azure IL5/IL6 services, Linux/Red Hat administration, and enterprise security monitoring solutions to strengthen the customer’s cyber defense capabilities. WHAT YOU’LL NEED TO SUCCEED Bring your cyber expertise and drive for innovation to GDIT. The Information Security Analyst Principal must have: Education: Security+, bachelor’s degree, or equivalent experience Experience: 5+ years of related experience Technical skills: Tenable Security Center (Tenable.sc), Linux/Red Hat administration, DISA STIGs, NSA guidelines, DoW compliance frameworks, Azure IL5/IL6 support, Microsoft Defender for Endpoint, POA&M management, vulnerability analysis, incident response familiarity Security clearance level: TS/SCI US citizenship required Role requirements: Ability to work independently as a subject‑matter expert while collaborating with multidisciplinary teams; familiarity with RMF and NIST 800‑53 frameworks; experience supporting federal or DoW cybersecurity environments GDIT IS YOUR PLACE At GDIT, the mission is our purpose, and our people are at the center of everything we do. Growth: AI-powered career tool that identifies career steps and learning opportunities Support: An internal mobility team focused on helping you achieve your career goals Rewards: Comprehensive benefits and wellness packages, 401K with company match, competitive pay, and paid time off Community: Award‑winning culture of innovation and a military‑friendly workplace OWN YOUR OPPORTUNITY Explore a career in cyber at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your focus on defending and protecting what matters. #J-18808-Ljbffr