Senior Identity Engineer, Systems Developer

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🕒 July 17, 2025

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3500 Square

WebsiteLinkedInAll Job Openings

11 - 50 employees

Founded 2023

🔒 Cybersecurity

🤝 B2B

🏛️ Government

Cybersecurity • B2B • Government

3500 Square is an SBA-certified, Service-Disabled Veteran-Owned Small Business (SDVOSB) founded by a U. S. Army veteran that provides expert IT services to streamline operations, modernize technology, and reduce costs for its clients. Backed by over 25 years of IT experience, the company specializes in IT managed services, software development, cloud management, network design and implementation, and cybersecurity, and also offers bilingual customer support and IT consulting. As a small, diverse firm (8(a), HubZone, MBE, SDB), 3500 Square emphasizes personalized, tailored solutions for business and government customers to meet specific objectives and compliance needs.

📋 Description

• 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.

🎯 Requirements

• 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. • 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.

🏖️ Benefits

• Health insurance • Retirement plans • Paid time off • Flexible work arrangements • Professional development