MKS2 Technologies, LLC, an award-winning high growth small business, creates innovative and customer-centric technology solutions in the areas of Cyber Security, Instructional Design and Training, Software Engineering and IT Support Services to improve the security and well-being of our clients. Our commitment to excellence and our “Mission First” orientation has resulted in steady growth and an expanding client base across government agencies. We have employees nationwide and for the past three consecutive years were named one of the fastest growing Veteran-owned companies in the nation. Please take a moment to browse through our website and learn more about what it means to serve with MKS2.

Security Software Engineer
Clearance Requirement: Top Secret clearances; must be SCI eligible
Location: Dahlgren, VA
Position Type: Full-Time

Overview

We are seeking a highly skilled Security Software Engineer with Red Team penetration testing expertise to support advanced cybersecurity operations within DoD environments. This role demands a deep understanding of software engineering, penetration testing tools, and secure system architecture across both Linux and Windows platforms. Candidates will contribute to offensive security operations, vulnerability assessments, and secure software development for mission-critical systems.

Minimum Qualifications

Experience:
- 5+ years in software engineering applied to program development, modeling, and simulation for DoD or IT systems
- 5+ years of hands-on experience with Linux and Windows environments
Training & Certifications:
- COMPTIA Linux+ or FedVTE Linux+
- Microsoft MCSA or equivalent Windows training
- IAT Level II certification per DoD 8570.01 (or successor)
- Penetration Testing Certification (one or more of the following):
- Offensive Security: OSCP, OSCE, OSEE, OSWP
- SANS: GPEN, GWAPT, GXPN, SEC642, SEC564
- OSD Cyber Operation Academy Course (COAC) graduate

Security Clearance:

Top Secret clearance
SCI eligible

Technical Skills & Tools

Strong working knowledge of penetration testing tools: Kali, Metasploit, NMAP, Cobalt Strike
Programming and scripting proficiency in: Python, C, C++, C#, Go, Perl, Powershell
Web development and testing: PHP, ASP, Java, HTML, SQL/NoSQL, RESTful/SOAP APIs
Enterprise technologies:

NSX, vCenter, vRealize Suite, Horizon View
PAN-OS, FirePower, Nexus, IOS, ASA
ONTAP, SnapMirror, Active Directory, Entra ID (Azure AD), SSO, MFA
Microsoft 365 hybrid environments
Automation: Powershell, PowerAutomate, Logic Apps, Graph API
AWS services: EC2, S3, KMS, RDS; serverless and microservice architecture

Security protocols: OAuth2, SAML, LDAP
Experience with Palo Alto, Cisco, VMWare, NetApp, and Microsoft products

Core Responsibilities

Conduct Red Team operations and penetration testing in MDE environments
Debug and reverse engineer software and analyze system logs (Windows Events, Linux syslog, boot logs, dmesg)
Identify and mitigate vulnerabilities in compiled and source code
Operate and administer systems running HP-UX, UNIX, Solaris, Linux, and Windows
Apply DISA STIGs and NSA encryption technologies
Design and implement deceptive technologies (e.g., honeypots)
Perform static source code analysis and participate in code reviews
Author recommendations for secure software design and contribute to SSAOM documentation
Integrate and manage identity and access across hybrid environments using Entra ID
Extend on-premises Active Directory with cloud identity solutions
Conduct security research leading to CVE publication
Participate in Capture the Flag (CTF) exercises (e.g., DEFCON, Hack the Box, OTW)

Diversity creates a healthier atmosphere: MKS2 Technologies is proud to be an Equal Employment Opportunity / Affirmative Action employer, and all qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, protected veteran status, disability status, sexual orientation, gender identity or expression, marital status, genetic information, or any other characteristic protected by law.

Security Software Engineer

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