Information Systems Security Engineer (ISSE)

ACTIVE TS/SCI SECURITY CLEARANCE REQUIRED** Protect What Matters Most Cyber threats don't take days off — and neither does the mission. As an Information Assurance Security Engineer supporting our Intelligence Community customer, you'll be a trusted voice on all things security: from policy and architecture to incident response and compliance. Your expertise will directly shape how systems are built, protected, and sustained in one of the most consequential environments in the country. If you're a seasoned security professional who thrives at the intersection of policy, engineering, and operations — and you want your work to mean something — keep reading. What You'll Be Doing Policy, Compliance & Accreditation Draft and review information security policies, Memoranda of Agreement (MOAs), and System Security Plans (SSPs)Lead and coordinate all aspects of Certification & Accreditation (C&A) and Risk Management Framework (RMF) processesReview Plan of Action & Milestones (POA&Ms) and drive technical remediation and lien resolutionEnsure IA hardware, software, and configurations comply with established security guides and A&A documentation Architecture & Engineering Advise on system design and architecture from a security-first perspective — working with developers, engineers, and project managers to build protection in from day oneDefine, design, and evaluate information security systems and multi-agency integration securityPerform advanced configuration and maintenance of network security infrastructure: firewalls, web/mail gateways, IDS, load balancers, and performance monitoring tools Operations & Incident Response Conduct forensic traffic and log analysis to isolate issues and respond to analyst alertsInitiate protective and corrective measures when incidents or vulnerabilities are discoveredExecute vulnerability remediation using ACAS security scans and related toolsRespond to escalated troubleshooting requests and support O&S functions for network security infrastructure Stakeholder Engagement & Training Maintain relationships with senior personnel across multiple agencies involved in information securityDevelop and deliver security awareness training to ensure users understand their responsibilities before system accessPresent monitoring results, test reports, and findings to leadership as required What We're Looking For Required: 10+ years of experience in information security, data security administration, or a related disciplineActive TS/SCI clearanceIAM Level II certification (per DoD 8570.01-M) required to startWorking knowledge of ICD 503 and RMF processesExperience with security tools: ACAS, HBSS, Carbon Black, Tanium, RedSeal, and/or EMETExperience with Cloud Infrastructure / AWS-based solutionsScripting experience on UNIX and/or RHEL operating systemsExperience with Microsoft PowerShell and complex macro scriptingHands-on experience installing, hardening, and troubleshooting network perimeter security technologiesWorking knowledge of Windows Enterprise Active Directory and VMware virtualizationSolid understanding of network routing and VLAN technologiesBachelor's degree in Computer Science, a related field, or equivalent experience Bonus Points For: CISSP or equivalent certification (CAP, GSLC, CISM)System or network administration backgroundSystem design and development experience What to Expect Day-to-Day This is a senior role with real responsibility and real variety. No two days look exactly alike — you might be reviewing an architecture proposal in the morning, investigating a security alert in the afternoon, and briefing leadership on remediation progress before the day is out. You'll work across IT teams, interface with multi-agency stakeholders, and be the kind of trusted advisor that programs depend on. The environment is fast-paced, team-oriented, and the mission is always in focus. Additional Information All your information will be kept confidential according to EEO guidelines.Compensation is unique to each candidate and relative to the skills and experience they bring to the position. The salary range for this position is typically $120-130k. This does not guarantee a specific salary as compensation is based upon multiple factors such as education, experience, certifications, and other requirements, and may fall outside of the above-stated range.Highlights of our benefits include Health/Dental/Vision, 401(k) match, Accrued PTO, STD/LTD/Life Insurance, Referral Bonuses, professional development reimbursement, and more! D2 Technical Services is committed to a merit-based recruitment process and encourages applications from all qualified individuals. As a Veteran-Owned Small Business, we particularly welcome applications from veterans who have the requisite skills and experience. Job applicants that are interested in one of our openings and may require a reasonable accommodation to participate in the job application or interview process, should contact us to request an accommodation.