Senior Medical IT Infra & Systems Administrator - Onsite DC

Tier4 Group; Washington (District of Columbia); On-site; USD 120,000 - 180,000; Full time

Job summary

Tier4 Group is seeking a Senior Infrastructure & Systems Administrator to support the U.S. Secret Service Occupational Health and Medical Programs.

This role is 100% onsite in Washington, DC and responsible for maintaining and securing enterprise IT infrastructure across cloud and on‑premises environments. The position requires 8+ years of IT infrastructure experience, with 5+ years in server administration, cloud platforms, databases, storage, and network security.

Qualifications

• Bachelor's degree in IT, CS, cybersecurity, or related field.
• 8+ years of IT infrastructure experience.
• 5+ years server administration (Windows/Linux).
• 5+ years cloud platforms (Azure and/or AWS).
• 5+ years database administration, storage, backup and recovery.
• 5+ years network administration and cybersecurity.
• Strong troubleshooting and documentation skills.

Responsibilities

• Administer Windows and Linux server environments.
• Support Azure and/or AWS cloud infrastructure.
• Manage databases, storage, backup, and disaster recovery processes.
• Maintain network infrastructure including routers, switches, and firewalls.
• Support cybersecurity initiatives, access controls, and system hardening.
• Troubleshoot enterprise systems and provide technical support.
• Develop technical documentation and recommend infrastructure improvements.

Skills

Server administration

Cloud platforms

Database administration

Network administration

Cybersecurity

Troubleshooting

Technical documentation

Education

Bachelor's degree in IT/CS/Cybersecurity

Tools

Azure

AWS

CCNA/CCNP

Security+

CISSP

Job description

Tier4 Group is seeking a Senior Infrastructure & Systems Administrator to support the U.S. Secret Service Occupational Health and Medical Programs.

This role is 100% onsite in Washington, DC and responsible for maintaining and securing enterprise IT infrastructure across cloud and on‑premises environments. The position requires 8+ years of IT infrastructure experience, with 5+ years in server administration, cloud platforms, databases, storage, and network security.