Sr. System Administrator

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Homeland, VA, USA
In-Office
Artificial Intelligence • Cloud • Information Technology • Security • Software
The Role
Job Summary & Responsibilities

ECS is seeking a Sr. System Administrator to work remotely.  


As a leading provider of managed cybersecurity services, ECS provides a highly tailored and customized offering to each customer. Our team is responsible for protecting both our customers and corporate environment at ECS. Our mission is very broad, and our team is agile. We will look toward your unique skills to approach and solve problems in your own way. Whether engineering a system to address a technical hurdle, protecting customers data or consulting on a wide range of security topics. You are empowered to engage and lead across multiple groups.


Job Responsibilities: 

  • Integrate with, and support, a team of subject matter experts in a highly agile environment to implement best-in-class, multi-Cloud solutions for large DoD programs. 
  • Work within a Hybrid Cloud engineering team to design, build, implement, and maintain Microsoft Office 365 security solutions to include Microsoft Defender. 
  • Identify enterprise and customer-specific issues in Microsoft|Office 365, conduct in-depth diagnostics, and develop innovative solutions to resolve issues. 
  • Develop tools and scripts to automate deployment, troubleshooting, monitoring, and diagnostics activities. 
  • Coach and mentor new hires, and support training initiatives/professional development to improve team capacity and performance. 
  • Function as a technical escalation point within the team. 
  • Develop a Cloud-Hosting System Concept of Operations (CONOPS) 

Salary Range: $120,000 - $160,000

General Description of Benefits

Preferred Qualifications
  • 8+ years of progressive experience supporting Microsoft 365 Application Services.
  • Deploy and Manage STIGs in DoD Hybrid environments. 
  • 3+ years of experience supporting Microsoft Defender for Endpoint, Intune, EntraID
  • Microsoft | Office 365 Admin Application and Services in a hybrid server environment 
  • Understanding of M365|O365 licensing 
  • PowerShell scripts creation 
  • Experience in Active Directory, MFA and Security Compliance 
  • Prior experience providing user support and conducting user software and hardware training to formulate technology solutions and ensure effective safeguarding and sharing of enterprise data 
  • Experience supporting mission-critical, 24x7 systems. 
  • IAT II Certifications: CompTIA Security+ and/or Certified Information Systems Security Professional (CISSP) certification 

ECS Compensation & Benefits Highlights

The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about ECS and has not been reviewed or approved by ECS.

  • Healthcare Strength ECS advertises multiple national-network medical plan options with HSA eligibility alongside dental and vision coverage. Coverage generally begins quickly and is paired with company-paid short- and long-term disability, adding stability to the health package.
  • Retirement Support A 401(k) with Safe Harbor and immediate vesting on employer contributions is emphasized, with an employer match available. Access to an employee stock purchase plan via the parent company provides an additional savings avenue.
  • Parental & Family Support Paid parental leave up to 30 days, adoption assistance, and other family-oriented leaves are highlighted. Feedback suggests these offerings add meaningful value beyond base pay for many roles.

ECS Insights

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The Company
HQ: Fairfax, VA
2,129 Employees
Year Founded: 1993

What We Do

ECS, a segment of ASGN (NYSE: ASGN), delivers advanced solutions and services in cloud, cybersecurity, artificial intelligence (AI), machine learning (ML), application and IT modernization, and science and engineering. The company solves critical, complex challenges for customers across the U.S. public sector, defense, intelligence and commercial industries. ECS maintains partnerships with leading cloud, cybersecurity, and AI/ML providers and holds specialized certifications in their technologies. Headquartered in Fairfax, Virginia, ECS has more than 3,400 employees throughout the U.S. and has been recognized as a Top Workplace by The Washington Post for the last five years.

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