Enterprise Systems Administrator

Systems Administrator IV – Microsoft 365 | M365 Engineer | Tulsa, OK

Systems Administrator IV – Microsoft 365

📍 Location: Tulsa, Oklahoma
🏢 Work Arrangement: 100% Onsite
📅 Contract Duration: 12 Months
💼 Employment Type: Contract
🚫 Visa Sponsorship: Not Available
🚚 Relocation Assistance: Not Available
📞 On-Call: Participation in a 24/7 support rotation required
📌 Local Tulsa-Area Candidates Only

Overview

A leading energy organization is seeking an experienced Systems Administrator IV to provide senior-level administration, engineering and governance across its enterprise Microsoft 365 environment.

This is a hands-on technical leadership position supporting Microsoft 365 collaboration, identity, security and compliance services. The successful candidate will take end-to-end ownership of platforms including Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Copilot, Microsoft Entra ID and Microsoft Purview.

The role is particularly well suited to an experienced Microsoft 365 professional who can combine advanced technical troubleshooting with platform strategy, security governance, incident leadership and mentorship of other technical team members.

Key Responsibilities

Microsoft 365 Platform Administration

  • Lead the administration, engineering, licensing and governance of the Microsoft 365 platform.

  • Support Exchange Online, Microsoft Teams, SharePoint Online, OneDrive, Copilot and Microsoft Entra ID.

  • Maintain secure, reliable and scalable collaboration and productivity services across an enterprise environment.

  • Establish and maintain platform standards, administrative controls, permissions and governance processes.

  • Review Microsoft 365 licensing and access to support cost-effective, least-privilege platform usage.

Platform Strategy and Delivery

  • Monitor the Microsoft 365 product roadmap and evaluate emerging capabilities for business value, security and operational suitability.

  • Guide the testing, staging and production-readiness process for new Microsoft 365 services and major platform changes.

  • Translate business and technical requirements into scalable Microsoft 365 solutions.

  • Coordinate with security, infrastructure, business and project teams to deliver platform improvements and integrations.

  • Apply project-management and change-control practices throughout platform implementations and upgrades.

Identity and Access Management

  • Manage enterprise identity and access capabilities through Microsoft Entra ID.

  • Implement and maintain Single Sign-On, Multi-Factor Authentication and Conditional Access policies.

  • Administer privileged access controls and identity-governance processes.

  • Conduct access and permissions reviews to maintain least-privilege security.

  • Strengthen controls around administrative access and sensitive Microsoft 365 services.

Security and Compliance

  • Configure and administer Microsoft Purview security and compliance capabilities.

  • Support data classification, Data Loss Prevention, retention and eDiscovery requirements.

  • Implement Insider Risk Management controls and related governance processes.

  • Perform security reviews and platform hardening before significant service launches or changes.

  • Partner with security and compliance stakeholders to ensure Microsoft 365 services meet organizational requirements.

Reliability and Technical Support

  • Provide Tier 3 support for complex Microsoft 365, identity and collaboration-platform issues.

  • Lead root-cause analysis and post-incident reviews.

  • Develop and document solutions that improve service reliability and reduce recurring incidents.

  • Participate in the organization’s 24/7 on-call support rotation.

  • Maintain clear technical documentation, operational procedures and knowledge resources.

Technical Leadership

  • Provide technical leadership within a broader team of analysts and engineers.

  • Mentor colleagues and help develop their Microsoft 365 administration and troubleshooting capabilities.

  • Guide technical decision-making across complex platform initiatives.

  • Promote effective collaboration, knowledge sharing and operational best practices.

Required Qualifications

Candidates must meet one of the following education and experience combinations:

  • High school diploma or GED with at least 15 years of IT experience.

  • Associate degree with at least 10 years of IT experience.

  • Bachelor’s degree in an IT-related field with at least eight years of IT experience.

A bachelor’s degree is not mandatory when the candidate possesses the required equivalent professional experience.

Required Experience

  • Extensive hands-on experience administering and engineering enterprise Microsoft 365 environments.

  • Strong experience with:

    • Exchange Online

    • Microsoft Teams

    • SharePoint Online

    • OneDrive

    • Microsoft Copilot

    • Microsoft Entra ID

    • Microsoft Purview

  • Experience managing Microsoft 365 licensing, permissions, governance and platform-readiness processes.

  • Strong knowledge of SSO, MFA, Conditional Access, privileged access and identity governance.

  • Experience with Microsoft Purview capabilities including DLP, retention, data classification and eDiscovery.

  • Experience providing Tier 3 support and resolving sophisticated Microsoft 365 platform issues.

  • Demonstrated ability to lead root-cause analysis and post-incident reviews.

  • Experience working in a large, enterprise-scale environment with formal governance and change-control processes.

  • Ability to analyse business and technical requirements and translate them into scalable technology solutions.

  • Strong organizational, communication and interpersonal skills.

  • Ability and willingness to participate in a 24/7 on-call rotation.

  • Commitment to maintaining safety as the highest operational priority.

Preferred Background

  • Experience owning Microsoft 365 platforms across a large, multi-site or highly regulated organization.

  • Previous responsibility for platform strategy, roadmap evaluation and enterprise governance.

  • Experience leading complex Microsoft 365 deployments, migrations, integrations or security improvements.

  • Technical leadership or mentorship experience.

  • Experience working collaboratively with security, infrastructure, compliance and business stakeholders.

  • A stable employment history, including completed long-term contracts or sustained ownership of multi-year platform initiatives.

Formal people-management experience is not required. The priority is hands-on technical leadership, platform ownership and the ability to mentor others.

Location Requirement

This position requires attendance onsite in Tulsa, Oklahoma, five days per week. Only candidates who already live within a practical commuting distance of Tulsa will be considered.

Relevant nearby locations may include Tulsa, Broken Arrow, Jenks, Bixby, Owasso, Sand Springs, Sapulpa, Glenpool, Catoosa, Claremore and Collinsville.

Relocation assistance is not available.

 

System Administrator (Mid/Senior) – TS/SCI Full Scope Poly – Annapolis, MD or Bluffdale, UT

System Administrator (Mid/Senior) – TS/SCI Full Scope Poly

📍 Locations: Annapolis, MD or Bluffdale, UT
🏢 Work Arrangement: 100% Onsite
💼 Employment Type: Full-Time
🔒 Security Clearance Required: Active TS/SCI with Full Scope Polygraph (NSA Preferred)
🇺🇸 Citizenship: U.S. Citizen Required
🚫 Visa Sponsorship: Not Available
🚚 Relocation Assistance: Available
💰 Compensation: $100,000 – $200,000 Base Salary

Overview

A leading government technology contractor is seeking System Administrators (Mid-Level and Senior-Level) to support mission-critical operations across highly secure environments in Maryland and Utah.

These positions support high-performance computing (HPC) infrastructure, mission operations sustainment, and complex Linux-based enterprise environments. Candidates may come from Linux System Administration, Platform Engineering, Storage Engineering, or Network Engineering backgrounds, but all team members are expected to perform core Linux administration responsibilities.

This is an excellent opportunity for cleared professionals who enjoy solving complex technical problems and supporting some of the nation's most critical missions.

Key Responsibilities

Linux System Administration

  • Install, configure, and administer Linux operating systems.

  • Manage system resources, file systems, and networking services.

  • Perform operating system maintenance, upgrades, and patching.

  • Support software installation, compilation, and configuration.

Operations & Infrastructure Support

  • Monitor mission-critical systems and infrastructure.

  • Troubleshoot operating system and application issues.

  • Maintain system reliability, availability, and performance.

  • Participate in operational sustainment activities.

Automation & Configuration Management

  • Develop and maintain Bash scripts.

  • Support infrastructure automation initiatives.

  • Contribute to configuration management processes.

  • Improve operational efficiency through automation.

Collaboration & Troubleshooting

  • Work closely with engineering and operations teams.

  • Investigate and resolve complex technical issues.

  • Document configurations, procedures, and troubleshooting methodologies.

  • Participate in system upgrades and maintenance windows.

Required Qualifications

Security Requirements

✔ Active TS/SCI Clearance

✔ Active Full Scope Polygraph (NSA Preferred)

✔ U.S. Citizenship Required

Linux Administration Experience

Strong experience supporting one or more of:

  • Red Hat Enterprise Linux (RHEL)

  • CentOS

  • Rocky Linux

  • SUSE Linux Enterprise Server (SLES)

  • Ubuntu

Required expertise with:

  • Linux installation and configuration

  • File system administration

  • TCP/IP networking

  • Operating system troubleshooting

  • Application troubleshooting

  • Bash scripting

  • Software compilation and installation

Preferred Technical Experience

High Performance Computing (HPC)

  • HPC environments

  • Large-scale enterprise infrastructure

  • Mission-critical computing systems

Monitoring & Operations Tools

  • Jira

  • Confluence

  • Grafana

  • Prometheus

  • Nagios

  • Slurm

  • Git

  • Salt

  • Ansible

Storage Engineering Experience (Preferred)

Candidates with storage engineering backgrounds are highly desirable.

Experience with:

  • Lustre File System

  • DDN Exascaler

  • Storage fabrics

  • Storage architecture

  • Performance tuning

  • Storage optimization

Emerging Storage Technologies

Exposure to:

  • E1000 Storage Systems

  • Elastic Storage Nodes (ESNs)

  • DAOS

  • Weka Data Platform

Network Engineering Experience (Preferred)

Experience with:

  • TCP/IP Networking

  • Enterprise Routing & Switching

  • Storage Networking

Preferred vendor experience:

  • Cisco

  • Juniper

  • Arista

High-Speed Networking

  • InfiniBand

  • Slingshot

Performance & Benchmarking Tools

Experience with one or more of:

  • IOR

  • iperf

  • FIO

  • lnet_selftest

Must-Have Requirements

Clearance

✅ Active TS/SCI Clearance

✅ Active Full Scope Polygraph (NSA Preferred)

Linux Administration

✅ Linux System Administration Experience

✅ Bash Scripting

✅ TCP/IP Networking

✅ OS & Application Troubleshooting

Soft Skills

✅ Strong Analytical Skills

✅ Strong Troubleshooting Ability

✅ Ability to Work Independently

✅ Team Collaboration Skills

Screening Questions

  1. Do you currently hold an active TS/SCI clearance with a Full Scope Polygraph?

  2. Was your Full Scope Polygraph issued by NSA?

  3. When was your most recent Full Scope Polygraph completed?

  4. How many years of Linux administration experience do you have?

  5. Which Linux distributions have you supported (RHEL, CentOS, Rocky, Ubuntu, SLES, etc.)?

  6. Do you have experience with Bash scripting and automation?

  7. Have you supported large-scale enterprise or HPC environments?

  8. Do you have experience with storage technologies such as Lustre, DDN, DAOS, or Weka?

  9. Do you have networking experience with Cisco, Juniper, Arista, InfiniBand, or Slingshot?

  10. Are you willing to work onsite full-time in either Annapolis, MD or Bluffdale, UT?

Ideal Candidate Profile

The ideal candidate will:

  • Hold an active TS/SCI Full Scope Polygraph.

  • Have strong Linux administration experience.

  • Thrive in highly customized, mission-critical environments.

  • Enjoy troubleshooting complex technical challenges.

  • Demonstrate curiosity and continuous learning.

  • Be comfortable supporting storage, networking, or platform infrastructure.

  • Possess strong analytical and problem-solving skills.

  • Work effectively both independently and within collaborative engineering teams.

Candidate Snapshot

Requirement

Details

Clearance

Active TS/SCI + Full Scope Poly

Citizenship

U.S. Citizen

Experience Level

Mid-Level to Senior

Linux Expertise

RHEL, CentOS, Rocky, Ubuntu, SLES

Scripting

Bash

Environment

Mission-Critical / HPC

Location

Annapolis, MD or Bluffdale, UT

Work Arrangement

100% Onsite

Travel

None

Compensation

$100K – $200K

Relocation

Available

Why This Opportunity?

Mission Impact

Support highly classified systems critical to national security operations.

Technical Challenge

Work in complex, large-scale Linux and HPC environments that demand advanced troubleshooting and engineering skills.

Career Growth

Gain exposure to cutting-edge storage, networking, automation, and high-performance computing technologies.

Excellent Benefits

  • 3 Weeks PTO

  • 11 Federal Holidays

  • Medical & Dental Coverage

  • Life Insurance

  • STD & LTD Coverage

  • 401(k) with Company Match

  • Long-Term Career Stability

This opportunity is ideal for a Linux System Administrator, Platform Engineer, Storage Engineer, Infrastructure Engineer, HPC Administrator, Network Engineer, or Systems Engineer with an active TS/SCI Full Scope Polygraph looking to support highly impactful government missions.