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3Core Systems, Inc

Cyber Security Engineer / Security Engineer – II

Arlington, TX, United States

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Job details

Posting language: English
Posted: Nov 9, 2026

Original job description

Job Title: Cyber Security Engineer / Security Engineer – II Location: Arlington Office, Tarrant, TX Duration: Contract-to-perm

Summary of Position:

The Security Engineer – II role strengthens and maintains the organization’s IT infrastructure, supporting complex PKI and IAM initiatives, conducting security assessments, and developing policies, standards, and procedures.
We’re seeking a PKI Infrastructure & IAM Engineer to modernize the enterprise’s cryptographic trust infrastructure and manage platforms governing access.
You will architect and execute the transition to a modern, automated, crypto-agile PKI with no disruption to production. In parallel, you'll engineer and govern the IAM platform: SSO, MFA, lifecycle automation, and access certification.
This is a hands-on senior role with architectural ownership. You'll be the technical authority both when a cert outage threatens production and when an auditor asks how quarterly access reviews are evidenced.
This role will work closely with Staff Security engineers, architects, and various engineering disciplines to ensure that adequate cloud security solutions are designed, implemented, and configured appropriately.