Senior IT Systems Administrator

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United States of America
US - VA, Alexandria
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Information Technology
In a world of possibilities, pursue one with endless opportunities. Imagine Next!

When it comes to what you want in your career, if you can imagine it, you can do it at Parsons.  Imagine a career working with intelligent, diverse people sharing a common quest. Imagine a workplace where you can be yourself. Where you can thrive. Where you can find your next, right now. We’ve got what you’re looking for.

Job Description:

SGSS, a Parsons company, has an immediate full-time, on-site, opening for a multi-platform, Senior IT (Systems) Administrator supporting Corporate IT infrastructure in Alexandria, VA. This position will be providing supplemental support to a DoD program on a secured client site located in Washington, D.C.

The IT/System Administrator will be responsible for providing world-class technical support and troubleshooting across a variety of systems and applications in person and remotely. Resolve Level 1 & 2 issues with Windows desktops, Windows laptops, Linux servers, cloud (AWS) services, permissions, access request, connectivity issues, hardware failures, etc. Documents, tracks, and reports issues and requests in the Jira Demand/Service management system. The customer site (DoD) management includes IT infrastructure that supports development and testing of spacecraft systems, including servers, storage, network, workstations as well as all installed software. These tasks will be completed in accordance with the customer specifications, organizational requirements and CMMC (NIST 800-171) standards. Candidates should be comfortable in Windows laptop and server environment with a strong understanding of Linux/UNIX workstations.

What You'll Be Doing:

  • Perform Day-to-day system administration, tasking, troubleshooting and prioritization of work in support of corporate user needs. Includes but is not limited to workstations, maintenance of IT assets, server setup and configuration and training lab(s)
  • MUST be self-motivated and able to assertively document and follow-up on customer requests
  • MUST have hands-on knowledge in coordinating problem resolution and working across IT functional areas
  • Responsible for tasking & collaboration with partner IT contractors, vendors and other system administrators at both the Alexandria & Florida offices, as well as DOD government location
  • Maintain and monitor Windows based systems and Linux based applications and desktop virtualization services
  • Perform daily system monitoring, verifying the integrity and availability of all hardware server resources (on premise and cloud based), systems and key processes, reviewing system and application logs and verifying completion of scheduled jobs such as backup
  • Support long-term planning and management of infrastructure, including maintenance, upgrades, monthly patch management, integrity of data storage and backup systems and replacement of obsolete equipment
  • Ensures adherence to Change Management and Incident response protocols and procedures
  • Assist with the management, enhanced deployment, configuration, and maintenance of the Slack platform
  • Oversee user access, permissions, and security settings within Slack
  • Keep current on the latest technical certification, technology innovations and assist in determining the best investments for the company and customer
  • Demonstrate to organization and customer, proven ability to manage multiple task/events simultaneously and deliver on time
  • Create and/or maintain operational, configuration and other procedures
  • Customer site duties: Provide supplemental support of, VMWare VSphere installation and administration, and VMWare. Provide direct mission support on customer site as needed in a classified and unclassified Windows\Linux desktop and server environment. Provide Tier 1-III/other support per requests from DoD government customer. Support building and deploying large SANS used in a VMware VSphere environments.
  • Responsible (Supplement support) for system administration at least two other government sites\projects. Tasks include but are not limited to: Linux Developer & OPs workstation setup, maintenance, & troubleshooting, Red Hat and Ubuntu Linux servers, Linux & Windows based server deployment and maintenance, Cisco and Juniper switch configuration, Cisco firewall configuration, and VMWare ESXi and VCenter administration

What Required Skills You'll Bring:

  • Active DoD SECRET clearance, with ability to obtain a TS/SCI clearance
  • B.S. in relevant field (Comp. Sci./Engineering, Software Engineering) or 14+ years relevant experience may be substituted for education
  • Demonstrate to organization and customer, proven ability to manage multiple task/events simultaneously and deliver on time
  • Minimum of 10 years’ experience in VMWare virtual hosting environments, MS Windows Server 2016-2019 administration
  • Must have general experience performing day-to-day administrative tasks related to managing a RedHat Linux based cluster to include storage and networking
  • 10+ years of experience in Active Directory or Windows Enterprise Administration including support delivery, consulting, architecting, IT operations, or equivalent education
  • Minimum of 8 years’ operations experience in an enterprise setting, including demonstrated O&M experience (backup/recovery strategies, advanced troubleshooting, patching, hardening, etc.)
  • 10+ years of experience providing Tier 1 – Tier 3 support to user community
  • Solid 8+ years of progressive VMware experience. Strong knowledge of VSphere, Windows, and MacOS
  • 8+ year of supporting tasks associated with the build, implementation, and administration of the On-Premises and Cloud server environments
  • 8+ years of Network Administration or related work experience in supporting, deploying and interconnecting various network technologies at an enterprise scale. Includes Hands on working experience with Networking operations systems such as Cisco, Juniper Screen OS and FortiOS. Strong understanding of TCP/IP and LAN/WAN networking
  • Strong understanding of DISA STIG requirements and implementation
  • Ability to manage multiple competing priorities effectively
  • Passionate about cybersecurity, cloud technologies, and problem-solving in IT environments
  • Researching new technologies for all of these environments this includes working with IT management and/or government business leaders to analyze new server requests and deliver allocated server administration tasks within defined timeframes
  • Excellent written and oral communication skills

What Desired Skills You Might Bring:

  • Current TS/SCI
  • 10+ years of experience managing\supporting IT infrastructure with Linux/Unix based applications
  • 5+ years Linux administration expertise in RHEL 7 & 8 environment. Includes full management of installations, NFS & application configurations and troubleshooting of all aspects of Linux servers
  • 5+ years of progressive knowledge in AWS EC2 & VPC environments
  • 5+ years of progressive Knowledge of Data Storage Technologies as NAS or SAN
  • 5+ years of System Administrative experience focused on the backend of the business communication platform, Slack
  • Experience in executing information assurance plans and procedures
  • Experience in collection, and communication of user requirements to supervisor to enhance current and future design and implementation of customer systems
  • Proven experience independently researching, planning, presenting, implementing, and maintaining substantial IT infrastructure solutions
  • Programming Languages: Shell Scripting (bash, csh), and HTML/CSS
  • MySQL application and database system support experience
  • COTS Products: Apache Web Server, Netapp, RedHat Satellite Server, RedHat IDM, Juniper, Fortinet Fortigate, Dell Servers & Switches, VMware VSphere
  • Background in SaaS infrastructure and service development, ideally across a wide range of software, operational and networking aspect

Minimum Clearance Required to Start:


This position is part of our Federal Solutions team.

Our Federal Solutions segment delivers resources to our US government customers that ensure the success of missions around the globe. Our diverse, intelligent employees drive the state of the art as they provide services and solutions in the areas of defense, security, intelligence, infrastructure, and environmental. We promote a culture of excellence and close-knit teams that take pride in delivering, protecting, and sustaining our nation's most critical assets, from Earth to cyberspace. Throughout the company, our people are anticipating what’s next to deliver the solutions our customers need now.

Salary Range: 

$96,400.00 - $168,700.00

Parsons is an equal opportunity employer committed to diversity, equity, inclusion, and accessibility in the workplace. Diversity is ingrained in who we are, how we do business, and is one of our company’s core values. Parsons equally employs representation at all job levels for minority, female, disabled, protected veteran and LGBTQ+.

We truly invest and care about our employee’s wellbeing and provide endless growth opportunities as the sky is the limit, so aim for the stars! Imagine next and join the Parsons quest—APPLY TODAY!

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We’re committed to delivering innovative infrastructure, defense and security solutions to enable a sustainable, safer, smarter and more connected world.


Founded in 1944, Parsons Corporation, a digitally enabled solutions provider, is focused on creating the future of the defense, intelligence, and critical infrastructure markets. From Earth to outer space, we deliver tomorrow’s solutions today. Equipped with the capabilities required to take on any defense, intelligence, or critical infrastructure challenge, our agile, innovative, and disruptive approach enables us to deliver solutions at the speed of relevance.

Our people are our greatest asset. We strive to be an employer of choice that engages employees in the community and creates rewarding career paths to cultivate a resilient workforce that is ready for the future.


Parsons has contributed to major infrastructure projects in Canada since the 1940’s, helping to design and build many well-known landscapes across the country, including the Regina Bypass, Turcot Exchange, Kicking Horse Canyon, Olivier-Charbonneau Bridge, and the Edmonton Light Rail Transit. Our markets are diverse, including Bridge, Tunnel, Road and Highway, Aviation, Rail and Transit, Smart Vehicle Solutions, Smart Mobility, Integrated Delivery, Environmental Remediation, Mining and Reclamation, and Water/Wastewater, as well as serving numerous industrial clients. The Parsons’ signature stands out and our achievements have been recognized via numerous awards for innovation and quality, particularly in long-span bridges, complex brigles, and major road networks expansions. Our teams work across Canada in many provinces, including Alberta, Ontario, Manitoba, British Columbia, Quebec, Saskatchewan, Northern Territories and the Yukon.

Parsons is an equal opportunity, drug-free employer committed to diversity in the workplace. Minority/Female/Disabled/Protected Veteran/LGBTQ+.

2021 Forbes The Best Employers for Diversity Badge

For more about Parsons, visit and follow us on Facebook, Twitter, LinkedIn, and YouTube.

2023 Military Friendly Top 10 Employer Badge
Diversity, Equity, Inclusion & Belonging Badge
2023 World's Most Ethical Companies Ethisphere Badge
2023 Readers' Choice Top 50 Employer for STEM Workforce Diversity
2023Woman Engineer Magazine Top 50 Employer Badge
2023 Los Angeles Business Journal DEI Company of The Year Badge
2023 Equality 100 Leader in LGBTQ+ Workplace Inclusion Badge
2023 Vets Indexes 4 Star Employer Badge
2023 Military Times Best Employer for Vets Badge
Proudly Supporting ESGR Badge
2023 Minority Engineer Magazine  Reader's Choice Top 50 Employer Badge
2022 U.S. Department of Labor Gold Award Badge
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4 Continents

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75+ Years

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17,000+ Employees

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80+ Languages


Financial Wellness

We care about your financial wellbeing. Parsons offers competitive pay and retirement plans to help you build wealth for the future while giving you the flexibility to diversify your investments.

Work Life Harmony

Balance in life is important and time away from the office is imperative to allow you to refresh and focus your attention on the things that matter to you. Parsons supports your time away by providing paid time off and paid flexible holidays.

Career Development

We are committed to fostering the personal and professional growth of our employees. Develop and advance yourself though our comprehensive training, educational and mentorship programs.

Veteran Support

We provide Industry leading benefits to support veterans and active-duty members to provide security for you and your family by offering robust leave and benefits; including paid active-duty military leave and paid time off when transitioning back to civilian life.

Mind & Body

At Parsons we inspire healthier habits, heathier minds, and a healthier you through our wellness program. Participate in our weekly Meditation Mondays and Wellness Wednesdays. Wellness, at Parsons, is more than just your annual checkup.


Health is not a one size fits all. At Parsons, we offer a robust Employee Assistance Program as well as comprehensive medical, dental and vision plans through large, national carriers with the choice of regional PPO, HDHP, or HMO networks.

Want to learn more about the benefits eligible for the Parsons’ location you are interested in? Connect with one of our recruiters for further detail.

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Parsons has a long-standing reputation as an industry leader in domestic and international engineering and construction projects. The company also has a solid history supporting federal government work.”

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Sr. Corporate Recruiter


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