Senior Infrastructure Engineer, CIS

What you'll do

• Operate and support enterprise DNS and DHCP services using Infoblox.
• Manage ClearPass network access control, including device onboarding and 802.1X/RADIUS policy changes.
• Execute certificate lifecycle tasks including issuance, renewal, and expiration monitoring.
• Write and maintain Python or Ansible scripts to automate DDI, certificate, and authentication workflows.
• Monitor systems for alerts, triage incidents, and participate in an on-call rotation.
• Support DNS, connectivity, and configuration tasks across AWS, Azure, and GCP cloud environments.
• Document changes, update runbooks, and contribute to the team knowledge base.

What we're looking for

• Bachelor's degree in Computer Science, Information Technology, Engineering, or equivalent practical experience.
• 2-4 years of experience in network, infrastructure, or systems engineering with exposure to DNS and DHCP.
• Foundational understanding of TCP/IP, DNS protocol basics, DHCP concepts, and general network troubleshooting.
• Basic scripting experience in Python, PowerShell, or similar with an interest in building automation skills.
• Working knowledge of public cloud platforms (AWS, Azure, or GCP) and ability to learn cloud-native tools.
• Exposure to network access control concepts such as ClearPass, ISE, RADIUS, or 802.1X.
• Familiarity with certificate and PKI concepts, including issuance, renewal, and expiration monitoring.
• Relevant certifications such as CompTIA Network+, Security+, CCNA, or an Infoblox associate-level credential (preferred).