Remote Senior Identity Engineer – ICAM & PKI R&D

3500Square; United States; Remote; USD 120,000 - 160,000; Full time

Job summary

3500 Square, LLC is seeking a Senior Identity Engineer | R&D Specialist to join our Identity Engineering Services team, supporting ICAM infrastructure for a federal healthcare environment. This role blends hands-on engineering with research and development of secure, scalable identity solutions for the Military Health System.

The ideal candidate has 5+ years in identity engineering or PKI within a federal/DoD setting, with proven experience designing secure architectures and implementing

Qualifications

• At least 5 years of hands-on experience in identity engineering, cybersecurity R&D, or PKI infrastructure within a federal or DoD setting.
• Proven experience designing and testing scalable, secure identity architectures and implementing PKI/PKE systems.
• Strong analytical, documentation, and software development skills in secure system environments.
• Ability to obtain and maintain a Public Trust (Tier 3/NACLC) clearance.

Responsibilities

• Design and develop ICAM solutions aligned with DoD cybersecurity and ICAM standards.
• Engineer and sustain directory services architectures such as ADDS, ADLDS, and Secure DNS-based on DHA server baselines and DISA STIGs.
• Research, prototype, and test next-generation PKI, PKE, PAM, and cryptographic key management capabilities.
• Maintain and update engineering artifacts including the mJAD Architecture & Design Document and technical packages.
• Support and enhance PKI infrastructure including certificate validation tools (Axway), Middleware (ActivIdentity), and CA migration processes.
• Engineer identity solutions across hybrid cloud and on-premise environments to manage users, systems, and SaaS resources.
• Design and implement PKE solutions using X.509 certificates for secure authentication, encryption, and data integrity across MHS applications.
• Provide support for certificate-enabled tools like ActivClient and Validator Suites.
• Apply research methods in computer science, network distribution, embedded systems, and secure software design.
• Contribute to the development of scalable identity architectures using formal modeling, analysis, and performance validation techniques.

Skills

Analytical skills

Documentation

Secure software development

Problem solving

Teamwork

Education

Bachelor’s degree in IT / Cybersecurity / CS / IS

CISSP / SSCP

SC-300 / Entra ID Governance

Tools

ActivIdentity ActivClient

Axway Validator Suite

PowerShell

LDAP

X.509 utilities

ADDS/ADLDS

DNS

Microsoft Windows Server

Remedy Ticketing System

Job description

3500 Square, LLC is seeking a Senior Identity Engineer | R&D Specialist to join our Identity Engineering Services team, supporting ICAM infrastructure for a federal healthcare environment. This role blends hands-on engineering with research and development of secure, scalable identity solutions for the Military Health System.

The ideal candidate has 5+ years in identity engineering or PKI within a federal/DoD setting, with proven experience designing secure architectures and implementing