Senior Infrastructure & Systems Administrator (Medical Systems)

Tier4Group; 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

Senior Infrastructure & Systems Administrator-(Medical Systems)
DUE TO THE NATURE OF THIS WORK YOU MUST BE A US CITIZEN

100% onsite in Washington, DC
Tier4 Group is seeking a Senior Infrastructure & Systems Administrator to support the U.S. Secret Service Occupational Health and Medical Programs. This role will be responsible for maintaining and securing enterprise IT infrastructure across cloud and on-premises environments.

Key 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

Required Qualifications

• Bachelor's degree in IT, Computer Science, Cybersecurity, or related field
• 8+ years of IT infrastructure experience
• 5+ years of experience with:
  • Server administration (Windows/Linux)
  • Cloud platforms (Azure and/or AWS)
  • Database administration
  • Enterprise storage, backup, and recovery
  • Network administration and cybersecurity
• Strong troubleshooting and infrastructure support skills

Preferred Certifications

• Azure Administrator
• AWS SysOps Administrator or Solutions Architect
• CCNA/CCNP
• Security+
• CISSP