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Network Administrator - Senior 

Category Information Technology  

STR is hiring a Network Administrator to support the STR Enterprise Infrastructure. We are looking for a motivated Network Admin that’s looking for the opportunity to build upon their networking skills. The Network Administrator will also perform tasks in support of all aspects of IT infrastructure across all locations. Strong knowledge of the design, implementation, upgrades and operation of all of enterprise infrastructure with strengths in Systems, Networks and Project Management.

Duties will include but are not limited to:

  • Lead, manage, and execute projects across the enterprise infrastructure with accountability for the project outcome through sound project management skills
  • Support Data Center/Server Rooms and Cloud operations: Hardware and software system provisioning, configuration, monitoring/alerting, and administration of Linux, Windows, VMware/vSphere and Cloud computing
  • Support STR Enterprise networks including routers, switches and firewalls
  • Collaborate and communicate with Network Architect for completing networking project portfolio items
  • Troubleshoot complex interactions in storage, servers, networks and databases in collaboration with other systems administrators and technical teams
  • Administer computer and network infrastructure security and the associated data and access controls
  • Support Disaster Recovery planning, implementation and operations of all business systems a plus: propose service levels, data types, recovery point objectives (RPO) and recovery time objectives (RTO) that align with a business impact analysis outcome to meet company objectives
  • Perform patch updates and vulnerability remediation of computer systems and network components
  • Ensure high availability of all critical applications while meeting or exceeding Service Level Agreements (SLA’s)
  • Conduct internal reviews of infrastructure components and recommendations for improvements
  • Document all infrastructure, processes and procedures
Position Requirements


  • US Citizenship
  • Bachelor's Degree or higher in Computer Science, Information Technology, Engineering or related technical field preferred (equivalent experience and certifications may be considered)
  • 10+ years of progressive technical (hands-on) experience related to systems development, implementation and administration
  • Extensive experience as a Linux and/or Windows Administrator
  • Experience with centralized authentication technologies such as Active Directory, NIS and LDAP
  • Working knowledge of TCP/IP and Microsoft networking concepts with work experience in designing, deploying and supporting Local Area and Wide Area Networks
  • Experience with network and system security administration, including operating system security configuration and account management best practices for Linux (CentOS, Ubuntu, RedHat), Windows Server, Windows clients, Microsoft Exchange, and Cisco Systems equipment
  • Knowledge of at least one scripting language and automation
  • Ability to understand and act on the customer needs and priorities in a fast-paced, deadline driven environment
  • Willingness to travel occasionally to other office locations
  • Ability to mentor more junior members of the team
  • Available for occasional off-hours outages and to take part in service restoration efforts


  • Good problem-solving and communication skills
  • Strong project management skills
  • Customer service oriented, attentive to detail, and with strong team and collaborative mindset
  • Self-starter requiring limited direction and supervision
  • Flexibility in approach to finding solutions
  • Strong interest in learning new technologies
  • Ability to communicate with end users about complex issues in easy to understand terminology


  • Security Clearance
  • DoD 8570 Level II Compliant Certification (i.e. Security+, CASP or CISSP)
  • Cisco Certified Network Associate (CCNA) or equivalent certification
  • SharePoint, System Center Configuration Manager (SCCM) or Sophos Administration
About the Organization Systems & Technology Research (STR) is a rapidly growing technology company with locations north of Boston, MA, Arlington, VA and near Dayton, OH. We specialize in advanced research and development for defense, intelligence, and national security, trying to understand how to protect our society: from stopping malicious botnet attacks, to understanding cyber vulnerabilities, providing next generation sensors, radar, sonar, communications, and electronic warfare to developing artificial intelligence algorithms and analytics to make sense of the complexity that is exploding around us.

STR is committed to creating a collaborative learning environment that supports deep technical understanding and recognizes the contributions and achievements of all team members. Our work is challenging, but you go home at night knowing that you pushed the forefront of technology and made the world a little safer. We recognize that the world is changing, that it is becoming more connected than ever before, making things change faster than before, and reshaping society in the process. We all want to understand this changing world and leave it better for our work.

We're not just any company. Our people, culture, and attitude along with their unique set of skills, experiences, and perspectives put us on a trajectory to change the world. We can't do it alone, though - we need fellow trailblazers. If you are one, join our team and help to keep our society safe!

EOE Statement STR is fully dedicated to hiring the most qualified candidate regardless of race, color, religion, sex (including gender identity, sexual orientation and pregnancy), marital status, national origin, age, veteran status, disability, genetic information or any other characteristic protected by federal, state or local laws.

If you need a reasonable accommodation for any portion of the employment process, email us at and provide your name, phone number and email address.

US Citizenship is required for all positions.

This position is currently not accepting applications.

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