IAM Administrator

Senior Security Engineer

Houston, TX – Spring area
Full-time opportunity
20% remote
Must live in the Houston / Greater Houston area

Strong security programs are built by engineers who understand the environment end to end.

We’re looking for a Senior Security Engineer who can design, implement, and operate enterprise security technologies across identity, endpoint, network, and application domains. This is a hands-on engineering role responsible for strengthening security controls and continuously improving the organization’s overall security posture.

You’ll work closely with infrastructure, networking, and development teams to integrate security into enterprise systems and services while maintaining strong operational security across the environment.

Must haves

• Strong hands-on experience securing Microsoft enterprise environments including Entra ID governance, Privileged Identity Management (PIM), Microsoft Defender XDR, Microsoft Intune, and Microsoft Purview
• Experience implementing and operating Privileged Access Management solutions using CyberArk
• Experience designing and managing enterprise PKI environments using Microsoft Active Directory Certificate Services and certificate lifecycle platforms
• Strong experience with enterprise network security technologies including F5 BIG-IP LTM and web application firewall configuration
• Experience designing high availability and disaster recovery for network security platforms
• Strong knowledge of enterprise networking, Windows environments, and Active Directory architecture
• Experience with authentication protocols and identity infrastructure

Nice to have

• Experience with Cisco Secure Access web security platforms
• Experience managing certificate automation platforms such as Keyfactor or Sectigo
• Experience with VMware ESXi environments
• Familiarity with secure application development practices, API security, and application threat modeling
• Experience working within security frameworks such as NIST or ISO/IEC 27002

In this role you’ll engineer and maintain identity security controls, manage privileged access environments, design and support PKI infrastructure, and support network security platforms that protect enterprise applications and services.

You’ll also participate in security operations activities including threat hunting, incident response, root cause analysis, and post-incident improvements. Collaboration across IT teams will be essential to integrating security controls into systems and services throughout the organization.

At iSphere, we value engineers who enjoy building and improving security systems, not just monitoring them. If you’re someone who likes working across multiple security domains and strengthening enterprise defenses through thoughtful engineering, we’d love to connect.

If you live in the Houston area and are interested in a hands-on security engineering role based in Spring, let’s talk.