Unix​/Linux Network and Computer Systems Administrator

Unix/Linux Network and Computer Systems Administrator

B&A is seeking a Senior Network and Computer Systems Administrator who will be responsible for the design, implementation, and maintenance of enterprise network and server infrastructure to ensure secure, reliable, and high-performance IT operations. This role combines advanced networking expertise with comprehensive systems administration skills to support mission-critical environments.

At B&A, we foster and embrace values of dedication, commitment, partnership, trust, and recognition. Since 1988 we have built successful delivery for our customers, ensuring employees feel deeply connected, recognized for hard work, and given continuous learning opportunities. Our entrepreneurial thinkers combine mindset, vision, and experience to drive value for our organization and clients in a collaborative culture where everyone works as one team toward a common vision.

• Configure, monitor, and troubleshoot routers, switches, firewalls, and VPNs.
• Manage network performance, capacity planning, and QoS policies.
• Implement and maintain network security measures (ACLs, IDS/IPS, STIG compliance).
• Perform firmware upgrades, patching, and vulnerability remediation.
• Support disaster recovery and business continuity planning.
• Document network architecture, configurations, and change‑management processes.

• Bachelor’s degree in IT, Computer Science, or related field.
• 10‑15 years of experience in enterprise networking.

• Strong knowledge of TCP/IP, VLANs, routing protocols (OSPF, BGP), and network monitoring tools.

• U.S. Citizen
• Active Top Secret (T5)

B&A serves federal, state, local government, private sector, and higher‑education clients. Notable clients include Department of Homeland Security, U.S. Customs and Border Protection, U.S. Senate, U.S. Courts, U.S. Census Bureau, U.S. Navy, and more.

B&A offers robust individual and family medical and dental plans, vision, life & AD&D, disability, accident, hospital indemnity, and critical‑illness insurance. Employees enjoy paid time off, sponsored trainings and certifications, pet insurance, commuter transit benefits, and a free subscription to a virtual exercise platform (NEOU). The 401(k) plan includes a company matching contribution.

Employee engagement and wellness programs include:

• The B&A Cares program: 30/60/90‑day wellness check‑ins, personal development, financial management, and stress‑management seminars.
• A formal mentorship program
• Job shadowing and cross‑training opportunities
• Brand Ambassador program
• Employee Assistance Program (EAP) providing counseling, legal guidance, financial planning, and more
• Monthly team‑building events
• B&A Annual Wellness Challenges (#StepWithB&A, #Walk During Lunch With B&A, #Volunteering
  
  WithB&A, #Exercise During Lunch With B&A)

We also support charitable efforts in Northern Virginia, including Capital Area Food Bank pantry drives, book donations, the Hope for Henry Foundation, and others. B&A was named a Companies as Responsibly Employers (CARE) award recipient by Northern Virginia Family Services and was nominated for the Outstanding Corporate Citizenship Award by the Northern Virginia Chamber of Commerce.

B&A provides equal employment opportunities (EEO) to all employees and applicants for employment without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status, amnesty, or veteran status in accordance with applicable federal, state, and local laws. This policy covers conduct at B&A offices, client sites, and all other locations where B&A provides services.

EEO is the Law. B&A participates in e‑Verify and submits required I‑9 information for new employees.

• Seniority level:
  Mid‑Senior
• Employment type:
  
  Full‑time
• Job function:
  Information Technology
• Industries: IT Services and IT Consulting