Security Software Engineer - Red Team Pen Tester Security Clearance

Position: Security Software Engineer - Red Team Pen Tester with Security Clearance
Data Intelligence is seeking a seasoned Security Software Engineer — Red Team / Penetration Tester to join a hands-on offensive security team supporting mission systems in the defense domain. This role is ideal for a pragmatic, technically deep engineer who blends software development, exploitation tooling, and operational red-team experience to assess and harden complex enterprise and DoD environments.

This position is fully on-site in Dahlgren, VA. This position is contingent upon winning contract award.

Key Responsibilities
* Plan and execute advanced penetration tests and red-team engagements against enterprise, cloud, and mission systems (including VDI, virtualization stacks, network enclaves, identity systems, and web services).
* Design, develop, and maintain offensive tooling, exploit code, C2 components, and automation to support engagements.
* Conduct network, host, web application, cloud, and identity-centric assessments (including REST/SOAP web services and modern auth protocols such as OAuth2/SAML/LDAP).
* Perform vulnerability discovery, exploit development, privilege escalation, lateral movement, persistence techniques, and post-exploitation analysis.
* Use and extend common pentest frameworks and tools (Kali, Metasploit, Nmap, Cobalt Strike) and integrate custom scripts and modules.
* Evaluate and document attack paths, IM/SSO/MFA bypass scenarios, and misconfigurations across Microsoft Entra  (Azure AD), Active Directory, hybrid Microsoft 365 environments, and federation/SSO integrations.
* Test and evaluate network and security devices (Palo Alto, Cisco, Fire Power, IOS/ASA, Nexus) and virtualization/storage platforms (vCenter/vRealize/Horizon, Net App/ONTAP, Snap Mirror).
* Perform cloud security assessments (AWS, serverless, microservices) and audit cloud configurations and workloads.
* Produce clear, actionable deliverables: technical findings, exploit proofs-of-concept, attack narratives, remediation guidance, and executive summaries for stakeholders.
* Collaborate with blue teams, Dev Sec Ops , and engineering teams to validate fixes and drive continuous improvement. Required Skills/Experience

Education:

Bachelor's degree in Computer Science, Engineering, Information Security, or equivalent experience preferred.

Experience:

Minimum 5 years of software engineering applied to program development, modeling, or simulation for DoD or IT systems and a minimum 5 years hands-on experience with:
* Linux: firm grasp / demonstrated knowledge (training such as CompTIA Linux+ or FedVTE Linux+ preferred).
* Windows & enterprise networks: foundational understanding of Windows enterprise administration (relevant Microsoft coursework/certification experience preferred). Offensive tooling & techniques:
Strong working knowledge and practical use of Kali, Metasploit, Nmap, Cobalt Strike. Documented operational experience in at least one of the following:
* Penetration Testing (government or contractor)
* Red Team Operations (government or contractor)
* Tool/Software Development (exploits, malware/C2, reverse engineering, bug bounties)
* Offensive/defensive programming in Python, C, C#, C++, Go, Perl, Power Shell
* Web development / web application penetration testing (PHP, ASP, SQL/No

SQL, Java, HTML), including RESTful and SOAP services and modern authentication schemes Minimum certification:
Must hold one of the following (or equivalent, current):
* Offensive Security: OSCP, OSCE, OSEE, OSWP
* SANS: GPEN (SEC
560), GWAPT (SEC
542), SEC
660, GXPN, SEC
642, SEC
564 Operational tools/platform familiarity: experience with virtualization & VDI stacks (NSX, vCenter, vRealize, Horizon), network/security appliances (Palo Alto, Cisco), storage platforms (Net App/ONTAP), and virtualization/cloud platforms (VMware, AWS). Identity & automation: demonstrable experience with Active Directory, Microsoft Entra  (Azure AD), SSO/MFA, identity federation, and automation using Power Shell / Power Automate / Logic Apps / Graph API. Clearance:
Current Top Secret Security Clearance Desired/Preferred Skills
* Prior experience conducting Red Team operations in an MDE (Managed Detection & Response / Microsoft Defender…