Senior Systems Administrator with Poly
Bigbear
Annapolis Junction, MD · Posted September 25, 2026
Just laid off? Start here: a plan for the first weeks
See every open role at Bigbear
More in Maryland job market · Manufacturing & Industrial · Engineering jobs
More roles at Bigbear
- Principal Firmware Reverse Engineer (AI-Assisted) · Columbia, MD
- Senior Software Engineer
- Customer Education Manager
- Senior Database Engineer with Poly · Hanover, MD
- Principal Software Engineer · Columbia, MD
- Full Stack Developer · Washington, DC
Similar jobs
- Senior Reentry Systems Engineer · Johns Hopkins University APL · Laurel, MD
- Forward Deployed Site Reliability Engineer - TS/SCI (CI Poly) · Twenty · Fort Meade, MD
- Senior Manufacturing Engineer · Rocket Lab · Middle River, MD
- Staff Site Reliability Engineer (SRE) · Xometry · MD
- Sr. Technical Program Manager · PlayStation (Sony Interactive Entertainment) · Madison, WI
- Senior Specialist, Systems Engineering - Joint Exercise Planner · L3HARRIS Technologies · Springfield, VA
Where Annapolis Junction, MD ranks
Where Annapolis Junction, MD placed in our monthly rankings, month by month. Each month stays online at its own address.
November 2026
- #15Best cities for software and engineering jobs in the Mid-Atlantic147 openings · of 68
- #17Best cities for mid-career professionals in the Mid-Atlantic60% · of 85
- #20Best cities for mid-career professionals60% · of 100
- #24Best cities for junior jobs in the Mid-Atlantic33% · of 85
- #25Best cities for AI-skill jobs in the Mid-Atlantic9% · of 85
Rankings about engineering jobs
- Best cities for software and engineering jobs #1 San Francisco (3,412 openings)
- Best cities for engineering pay after cost of living #1 San Mateo ($216k)
- Most requested AI skills in engineering jobs #1 AI tools in daily work (6.1%)
- AI tools named most often in engineering jobs #1 Claude (1.7%)
- Employers with the most engineering jobs #1 Amazon (2,992 roles)
Skills this job asks for
Say which you have and which you want to build. We use it to match you to jobs like this one.
About the job
Residency
All applicants must reside in the United States at the time of application.
Overview
Senior Systems Administrator Location: On-Site at Customer Location (Annapolis Junction, MD)
Clearance Required: TS/SCI with Poly
Are you ready to take your systems administration expertise to the next level and support mission-critical operations? BigBear.ai is seeking a Senior Systems Administrator to join our team and assist in meeting the needs of our government customer. In this role, you’ll work onsite at the assigned customer location, ensuring optimized system performance, security, and reliability. If you’re passionate about Linux systems, virtual environments, and delivering innovative solutions in a fast-paced environment, we want to hear from you!
What you will do
Manage & Optimize Systems: Oversee the customer’s Risk Management Framework and related systems to ensure optimal performance and security.
Support System Upgrades: Patch, upgrade, and migrate Linux systems and virtual machines (VMs) to maintain system integrity and performance.
Contribute to Agile Development: Participate in agile activities, including release planning, sprint planning, and retrospectives, to incorporate lessons learned into engineering processes.
Collaborate with Developers: Work closely with developers throughout the application development lifecycle to build features that deliver value to our customers.
What you need to have
Experience: Bachelor’s degree and 10+ years of systems administration experience.
Clearance: TS/SCI with Poly (required).
All applicants must currently reside in the United States
Technical Expertise: Proficiency with Linux, including a minimum of 3 years of Linux system administration experience (within the last 3 years).
Knowledge of physical and virtual servers.
Experience researching and creating solutions to close Information Assurance Vulnerability Alerts (IAVAs).
Hands-on experience with Ansible for automation.
Proven ability to build and maintain VMware environments.
Certifications: Security+ certification (required).
What we'd like you to have
Experience with AWS cloud environments.
Scripting experience (Python/Perl) for automation and task optimization.
Familiarity with Docker for containerization.
Pay transparency
Please note the targeted compensation range is provided as an estimate, and any actual compensation offer may vary depending on the needs of the company, or an applicant's skillset, competencies, experience, education, certifications, location, or other factors. The estimated range does not include the value of any benefits offered.
About BigBear.ai
BigBear.ai is a leading provider of AI-powered decision intelligence solutions for national security, supply chain management, and digital identity. Customers and partners rely on Bigbear.ai’s predictive analytics capabilities in highly complex, distributed, mission-based operating environments. Headquartered in McLean, Virginia, BigBear.ai is a public company traded on the NYSE under the symbol BBAI. For more information, visit https://bigbear.ai/ and follow BigBear.ai on LinkedIn: @BigBear.ai and X: @BigBearai.
BigBear.ai is an Equal opportunity employer all protected groups, including protected veterans and individuals with disabilities.
Manage & Optimize Systems: Oversee the customer’s Risk Management Framework and related systems to ensure optimal performance and security.
Support System Upgrades: Patch, upgrade, and migrate Linux systems and virtual machines (VMs) to maintain system integrity and performance.
Contribute to Agile Development: Participate in agile activities, including release planning, sprint planning, and retrospectives, to incorporate lessons learned into engineering processes.
Collaborate with Developers: Work closely with developers throughout the application development lifecycle to build features that deliver value to our customers.
Experience: Bachelor’s degree and 10+ years of systems administration experience.
Clearance: TS/SCI with Poly (required).
All applicants must currently reside in the United States
Technical Expertise: Proficiency with Linux, including a minimum of 3 years of Linux system administration experience (within the last 3 years).
Knowledge of physical and virtual servers.
Experience researching and creating solutions to close Information Assurance Vulnerability Alerts (IAVAs).
Hands-on experience with Ansible for automation.
Proven ability to build and maintain VMware environments.
Certifications: Security+ certification (required).