Senior Identity Engineer | Systems Developer

Senior Identity Engineer | Systems Developer

Location: Remote – Available across U.S. and Puerto Rico

Clearance Level: Public Trust (ADP/IT-II) or Tier 3 Investigation (NACLC)
Citizenship: U.S. Citizenship required

We are seeking candidates for a potential opportunity as Senior Identity Engineer | Systems Developer to join our Identity Engineering Services team in support of a large-scale federal IT environment. This position plays a critical role in engineering and maintaining identity, credential, and access management (ICAM) solutions that secure the Defense Health Agency’s infrastructure across both on-premise and cloud environments.

Key Responsibilities

• Design, document, and implement enterprise identity, access, and credential management solutions in compliance with DoD ICAM standards.

• Engineer and maintain directory services, including Active Directory Domain Services (ADDS), ADLDS, and Secure DNS aligned with DHA baselines and DISA STIGs.

• Support PKI infrastructure: middleware (ActivIdentity), Validator Suites (Axway), and CA migration activities per DoDI 8520.02.

• Maintain PKI Certificate Validation Suites and issue certificates across LAN/WLAN and Med-COI environments.

• Engineer secure identity management solutions integrating with SaaS and resource partners across hybrid cloud and on-prem environments.

• Implement PKE solutions utilizing X.509 certificates to support MHS applications and ensure compliance with DoDI 8520.03.

• Research and develop scalable system-level software solutions using advanced computer science and mathematical principles.

• Collaborate across engineering, cybersecurity, and systems teams to ensure successful integration of identity services into mission-critical systems.

Preferred Tools & Technologies

• Microsoft Active Directory, ADLDS, Secure DNS

• DoD PKI / Internal Medium Assurance (IMA)

• ActivIdentity ActivClient, Axway Validator Suite

• DoD ICAM Reference Architecture, DoDI 8520.02 / 8520.03

• PowerShell, LDAP, X.509 utilities

• Remedy Ticketing System

• Microsoft Windows Server OS

• DISA STIG compliance frameworks

Minimum Qualifications

• Minimum of 5 years of experience in systems development, identity engineering, or PKI/PKE infrastructure within a federal or DoD environment.

• Proficiency in designing and implementing directory and identity services at an enterprise level.

• Demonstrated knowledge of DoD ICAM architecture, PKI validation processes, and certificate-based authentication solutions.

• Strong communication and documentation skills for technical and non-technical audiences.

• Ability to obtain and maintain a Public Trust (Tier 3/NACLC) clearance.

Education & Certifications

• Required (Foundational – one of the following):

  • Bachelor’s degree in IT / Cybersecurity / Data Science / IS / CS (ABET or CAE accredited),

  • OR CISSP / SSCP.

• Required (CE – one of the following):

  • Microsoft Identity & Access Administrator (SC-300),

  • OR Microsoft Entra ID Governance Specialty.

Why Join Us?

This is a unique opportunity to shape the future of secure identity services within a global federal healthcare mission. Join our expert engineering team and help safeguard access to critical IT systems for service members and their families.

📩 Apply today and contribute to national readiness through world-class identity solutions.

Please Note: This position is contingent upon contract award. Candidates selected will be notified once the award has been confirmed.

Equal Employment Opportunity and E-Verify Statement

3500 Square, LLC is proud to be an Equal Opportunity Employer. We do not discriminate against any applicant or employee on the basis of race, color, religion, sex (including pregnancy, sexual orientation, or gender identity), national origin, age, disability, genetic information, protected veteran status, military status, citizenship status, or any other legally protected status, in accordance with federal, state, and local laws.

As a federal contractor, 3500 Square, LLC complies with Section 503 of the Rehabilitation Act and the Vietnam Era Veterans’ Readjustment Assistance Act (VEVRAA), providing equal opportunity and affirmative action for qualified individuals with disabilities and protected veterans.

All employment decisions are based on qualifications, merit, and business needs. Fair consideration is provided to all candidates, including U.S. citizens and nationals, as required by federal regulations regarding national origin discrimination.

If you require a reasonable accommodation to complete the application process due to a disability, please contact our Human Resources team at or 1-787-814-0087.

3500 Square, LLC participates in E-Verify. If E-Verify cannot confirm that you are authorized to work, you will receive written instructions and an opportunity to contact the Department of Homeland Security (DHS) or Social Security Administration (SSA) to resolve the issue before any employment action is taken against you, including termination.

Employers can only use E-Verify after you have accepted a job offer and completed the Form I-9.

3500 Square, LLC is an Equal Opportunity Employer/Protected Veterans/Individuals with Disabilities.