MDA Information Systems LLC

Returning Candidate?

Network Administrator - Linux

Network Administrator - Linux

# of Openings 
Job Location 
Posted Date 

More information about this job


Radiant Solutions is looking for a Systems and Network Engineer to join our team in Gaithersburg, MD 


General Summary


The Systems and Network Engineer position provides installation, configuration and maintenance of networked information systems across multiple locations. Duties include support for all network infrastructure equipment and security devices; troubleshooting network and communication issues and bottlenecks, assisting in network architecture reviews; documenting network topologies and configurations; securing network resources and communication; and working with business units to improve performance and speed. The position will also provide direct system administration support for Linux and Windows systems; large-scale storage devices; virtualization host environments; and layer 3 thru 7 security solutions.   The position will have opportunity to be exposed to numerous system, network, and security related projects in order to improve Radiant Solution's network and infrastructure capabilities while further enhancing IT security. This position requires a highly-motivated individual who can work effectively within a team as well as independently. Candidates must be able learn quickly to support a fast-paced environment.


The Company:


Maxar Technologies Ltd. (formerly MacDonald, Dettwiler and Associates Ltd.) is a leading global provider of advanced space technology solutions for commercial and government markets including satellites, Earth imagery, geospatial data and analytics. As a trusted partner, Maxar Technologies provides unmatched end-to-end advanced systems capabilities and integrated solutions expertise to help our customers anticipate and address their most complex mission critical challenges with confidence. With more than 6,500 employees in 21 locations, the Maxar Technologies portfolio of commercial space brands includes SSL, MDA, DigitalGlobe and Radiant Solutions. Every day, millions of people rely on Maxar Technologies to communicate, share information and data, and deliver insights that empower a better world. Maxar trades on the Toronto Stock Exchange and New York Stock Exchange as MAXR. For more information visit


Radiant Solutions provides multi-source data collection, enrichment, and analytic capabilities that reveal unique geospatial information and insights where and when it matters most. Our purpose is to help national security and commercial organizations understand and navigate our changing planet. No company has such strong roots in geospatial with our level of scale and a strong commercial mindset. MDA Information Systems, RadiantBlue, DigitalGlobe Intelligence Solutions, and HumanGeo are well known for delivering innovative capabilities across the entire geospatial intelligence value chain. Our combined team of over 1,000 aerospace engineers, geospatial analysts, weather and ocean experts, software developers, data scientists, and DevOps engineers apply disruptive technology and our unique intellectual property to both national security and commercial problems. Radiant Solutions is divided into three mission areas: Sensor and Ground Modernization, Data to Insight and Agile Intelligence.  



Radiant Solutions offers an excellent comprehensive benefits package including medical, dental, life, and short/long-term disability insurance, vacation and sick leave, 401(k) retirement plan, flexible spending account and tuition assistance. Radiant Solutions is an Equal Opportunity Employer.


To be qualified you must be a US Citizen and must have eligibility to receive a clearance




Primary Responsibilities:

  • Install, configure, and maintain network and security equipment and services
  • Provide Linux and Windows provisioning and administration across physical and virtual platforms
  • Document/diagram current and future networks and systems
  • Troubleshoot issues with networks, security, hardware, OS’s and applications from end to end
  • Assist in network security planning, implementation, and maintenance (firewall, ACL, etc.)
  • Implement and manage VPN, Next Generation Firewall, Virtualization, and Storage solutions

Additional Responsibilities:

  • Install new servers/workstations/other devices and connect to the network
  • Identify and implement best practices for network performance and security
  • Document IT processes, configurations, and policies for network and server configurations and security
  • Provide general Tier 2/3 end user support as requested
  • Other duties as assigned



  • Experience: At least 5 years of hands-on IT support in a medium to large organization
  • Certifications: (One or multiple of the following desired) CCNA, CCNP, CNE, Security+, CISSP, RedHat Certification, MCSE, Amazon Solutions Architect
  • Education: Bachelor’s Degree in Computer Science, Information Technology or related work experience
  • Systems: Cisco/Dell Routers and Switches; Juniper, CheckPoint, and/or Cisco security devices
  • OS: Windows Server, Linux (mainly CentOS/RHEL), VMWare ESXi experience recommended
  • Networking: General knowledge and hands on experience with switches, routers, and firewalls required. A working knowledge of VLANs, Subnetting, ACLs, STP, LAGs, LACP, and basic routing protocols also required.
  • Software: Ability to use terminal services (PuTTY, Hyperterm, or similar) to configure switches/routers via CLI required. A working knowledge of troubleshooting applications (Wireshark, ethereal, tcpdump, or similar) also required
  • Must have excellent troubleshooting skills with the ability to analyze and isolate network and system specific issues to identify and resolve the root cause.
  • Experience implementing PKI solution for device and user validation a plus
  • Ability to work independently to develop and present IT solutions that meet business unit’s needs
  • Excellent oral and written communication
  • Excellent focus on customer service and in building relationships with IT and non-IT staff
  • Experience with Network Load Balancers a plus
  • Cloud experience using Amazon Web Services or Google Cloud a plus