Mantech

ManTech is seeking a Public Key Infrastructure (PKI) Software Engineer to join our mission-focused team in Hanover, MD. In this critical role, you will support the full software development lifecycle of complex and secure IT systems, with a strong focus on high-assurance cryptographic capabilities. This position combines software engineering expertise with deep PKI domain knowledge to ensure secure, interoperable, and efficient enterprise systems.

This position is a hybrid role that requires someone local to the Hanover, MD area.

Responsibilities include, but are not limited to:

Requirements Analysis & System Design

• Analyze and interpret system and user requirements to derive functional and technical software specifications.
• Collaborate with cross-functional engineering teams to design system architectures supporting mission-critical operations.
   

Software Development & Integration

• Design, develop, test, and maintain scalable software systems using modern programming methodologies.
• Enhance existing applications by implementing new features, resolving bugs, and integrating with external systems and platforms.
   

Algorithm Development & Data Modeling

• Design and optimize complex algorithms and data structures to meet performance and functional requirements.
• Develop queries and data interfaces for high-volume, secure data repositories.
   

Systems & Infrastructure Integration

• Work alongside systems and hardware engineers to define software constraints and ensure seamless integration with cryptographic infrastructure and operational environments.
   

Performance Optimization & Troubleshooting

• Analyze performance metrics and operational workflows to identify system bottlenecks and areas for improvement.
• Implement robust, maintainable solutions for long-term efficiency and reliability.
   

Technical Leadership & Oversight

• Provide guidance and technical oversight to software development teams.
• Ensure adherence to software development lifecycle (SDLC) best practices, security standards, and compliance policies.
   

PKI & Cryptographic Systems Engineering

• Evaluate and compare PKI requirements to assess interoperability and compliance risks.
• Author and review Certification Practice Statements (CPS) for alignment with X.509 Certificate Policy requirements.
• Perform compliance audits and security assessments of PKI components including:
  • Certification Authorities (CAs)
  • Hardware cryptographic modules
  • Smartcards and tokens
  • Applets and card management systems
  • Trusted roles
     

Basic Qualifications

• Bachelor’s degree in computer science, Engineering, or a related field.
  An additional 5 years of relevant experience may be substituted for a degree.
• Minimum of 14 years of experience in software engineering, preferably in secure or defense-related environments.
• Proven expertise in:
  • Security and vulnerability assessments of PKI and key management systems
  • Developing and evaluating hardware cryptographic modules (e.g., NSS tokens, smartcards, HSMs)
  • Preparing white papers and technical documentation for PKI challenges and solutions
     

Preferred Qualifications

• Red Hat Certification (RHCSA/RHCE)
• Familiarity with FIPS 140-2/3, NIST guidelines, and DoD IA policy frameworks
   

Security Clearance

• Active TS/SCI clearance is required
• Must be willing to obtain and maintain a Polygraph
   

Physical Requirements

• Ability to remain in a stationary position approximately 50% of the time.
• Ability to operate a computer and other office productivity machinery.
• Strong written and verbal communication skills required for frequent interaction with technical teams and leadership.