Senior Identity & Security Engineer

Senior Security Engineer

Houston, TX - Westchase
Onsite
Full-time opportunity

Security is strongest when the engineer behind it understands the entire environment.

We're looking for a Senior Security Engineer who can design, deploy, and operate enterprise security controls across identity, endpoint, network, and application domains. This is a hands-on role where you'll work closely with infrastructure, networking, and development teams to strengthen the organization's overall security posture.

You'll be responsible for engineering and improving security technologies that protect systems, identities, and data in a mid-size enterprise environment. The work spans identity protection, privileged access management, endpoint security, certificate infrastructure, and network defense.

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 efforts including threat hunting, incident response, root cause analysis, and post-incident improvements. Collaboration across IT teams will be key to integrating security controls into systems and services throughout the environment.

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're in the Houston area and interested in a hands-on security engineering role onsite in Westchase, let's talk.