Information Assurance Security Engineer
D2 Technical Services
| Company | D2 Technical Services |
| Category | Engineering |
| Location | Springfield |
| Remote | On-site (inferred) |
| Employment | Not stated |
| Level | Not stated |
| Salary | Not stated by the employer |
| Posted | 24 Jun 2026 |
| Last verified | 30 Jul 2026 |
| Source | Employer career page (greenhouse) |
Description
**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) processes
Review Plan of Action & Milestones (POA&Ms) and drive technical remediation and lien resolution
Ensure 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 one
Define, design, and evaluate information security systems and multi-agency integration security
Perform 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 alerts
Initiate protective and corrective measures when incidents or vulnerabilities are discovered
Execute vulnerability remediation using ACAS security scans and related tools
Respond 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 security
Develop and deliver security awareness training to ensure users understand their responsibilities before system access
Present 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 discipline
Active TS/SCI clearance
IAM Level II certification (per DoD 8570.01-M) required to start
Working knowledge of ICD 503 and RMF processes
Experience with security tools: ACAS, HBSS, Carbon Black, Tanium, RedSeal, and/or EMET
Experience with Cloud Infrastructure / AWS -based solutions
Scripting experience on UNIX and/or RHEL operating systems
Experience with Microsoft PowerShell and complex macro scripting
Hands-on experience installing, hardening, and troubleshooting network perimeter security technologies
Working knowledge of Windows Enterprise Active Directory and VMware virtualization
Solid understanding of network routing and VLAN technologies
Bachelor'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 background
System 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
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