Principal / Sr Principal Systems Engineer – PKI

Northrop Grumman

full-time

Posted on: 9/25/2025

Origin: • 🇺🇸 United States • Alabama, Colorado

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💰 $124,900 - $196,700 per year

Senior

LinuxPerlSDLCSQLUnix

About the role

Design, develop, test, implement, and integrate PKI solutions focused on code signing and key management operations
Establish and execute a certificate lifecycle management process
Manage and maintain PKI environments and Active Directory Certificate Services
Collaborate with architecture, engineering, operations, and support teams to incorporate PKI solutions in compliance with NIST 800-57 and CNS 1300
Participate in designing, planning, implementing, and maintaining digital code signing
Manage certificate enrollment, renewal, and revocation processes
Ensure security and integrity of the PKI environment and implement security measures to prevent unauthorized access
Monitor and troubleshoot PKI and Active Directory Certificate Services-related issues
Collaborate with Cyber, IT, and Operational teams to integrate PKI solutions with existing systems
Support processes and implement capabilities to ensure application code integrity, secure SDLC activities, and manage key assets
Develop and maintain critical technical and cyber infrastructure and capabilities for certificate management
Create PowerShell scripts for administrative and automation tasks
Support security engineering initiatives and the development and advancement of the Cyber Roadmap
Support continuous Security Engineering and architecture initiatives

Applicants must hold a current, active in-scope DoD-issued Secret security clearance at the time of application
U.S. Citizenship is required for all positions with a government clearance
Appropriate IAM Level III DoDI 8570 certification required (internal candidates with IAT Level II cert and ability to obtain IAM Level III within guidelines will be considered)
5-7 years of experience supporting Microsoft Active Directory Certificate Services and PKI technologies
Level 3: Bachelor’s Degree in STEM (preferred) with 5 years experience; or Master’s with 3 years; or PhD with 1 year
Level 4: Bachelor’s Degree in STEM (preferred) with 8 years experience; or Master’s with 6 years; or PhD with 4 years
Experience with Linux/Unix and Windows
Experience with scripting languages (such as Bash, PowerShell, or Perl)
Experience with SQL, LDAP, and Web services
Understanding of X.509 Certificate Management Standards, NIST 800-57, and CNS 1300 PKI Standards
Demonstrated ability to multitask, work independently, and take initiative
Excellent customer service and interpersonal skills, strong time management, organizational, research, analytical, and problem-solving abilities
Strong written and verbal communication skills
Please list your current security clearance and IAT or relevant certifications on your resume, if applicable