Senior System Administrator

US-MD-Annapolis Junction


ASRC Federal - Vistronix is a national security solutions provider specializing in transforming big and complex data sets into mission critical intelligence.  Ingesting, processing, and exploiting Big Data is at the core of everything we do: Cyber & SIGINT Operations, C4ISR & Multi-INT Processing, and Enterprise & Open Source Analysis.  As a national security middleweight, we have a passion for our customers' mission and value ingenuity, agility, speed, and the ability to think and deliver at scale.  For more information, visit


ASRC Federal - Vistronix is currently seeking an experienced System Administrator for a role on one of our subcontracts.  This full time position affords the successful candidate the opportunity to work in an engaging, high-tech development environment, working with an excellent team and customer base. 




Monitor, maintain, performance-tune and upgrade system underlying COTs and GOTS products and infrastructure.  Identify and diagnose system issues.  Triage all user requests for production system component problems, respond to and take action to resolve requests caused by production system components.  Deploy tested components to the operational infrastructure.  Maintain a pulse on industry trends and apply to product as necessary.  Participate in a team-based, agile software development cycle.


Perform Linux system setup and management for both physical and virtual Operating Systems (OS), to include provisioning, configuration, patching and update management, platform securing/hardening.  Provide manual and automated system management across widely dispersed Linux systems.  Administer and configure virtual machines and VM clusters.  Communicate with software developers and other team members to gather requirements and implement solutions.  Develop technical documentation to include system administration architecture documentation and diagrams, configurations, baselines, administrative procedures and instructions.  Coordinate with developers to define operational system security requirements, develop System Security Plans and related security documentation and coordinate system security accreditation and authorizations.


  • Ten (10) years of experience in programs and contracts of similar scope, type, and complexity is required. 
  • BS degree in a technical discipline is required.  Five (5) years of additional system administration experience may be substituted for bachelor's degree.
  • Meets all requirements of previous level(s).
  • Provides support for the dispatch system and hardware problems and remains involved in the resolution process.
  • Provides in-depth experience in trouble-shooting IT systems.
  • Configures and manages UNIX and Windows (or other applicable) operating systems and installs/loads operating system software, troubleshoot, maintain integrity of and configure network components, along with implementing operating systems enhancements to improve reliability and performance.
  • Provides detailed analysis and feedback to management and internal customers for escalated tickets.

Job Specific Technical Skills Required:

  • Minimum 5 years’ experience administering LINUX/UNIX systems
  • General understanding and experience working with and configuring LINUX disk encryption
  • Experience with LINUX Volume Manager
  • Experience provisioning systems, configuring systems, patching and managing systems and securing/hardening systems
  • Experience administering virtual machines
  • Experience in developing and implementing system configuration scripts in Perl, Bourne, Bash and/or C-Shell
  • General working knowledge of Cisco and/or Dell routers and switches
  • Experience creating documentation to outline processes and procedures
  • Expertise with Accumulo, Hadoop and certificate management utilities.
  • Experience with:
    • Apache HTTPD
    • Apache Tomcat
    • SQL
    • MongoDB
    • Redis
    • Linux firewall configuration (ip tables)
    • Kickstart
    • NAT and gateway setup
    • Remove server management
    • Server certificates (environment specific), encryption and secure protocols
    • Puppet
    • Yum
    • Scripting languages to include but not limited to: Bash, Perl
    • Use of management tools
    • Building RPMs

Job Specific Desired:

  • Experience deploying software updates to remote systems
  • Software development and engineering practices
  • Oral and written communication, teaming, and time management
  • Knowledge of Computer/System Architectures, Software Development Life Cycle, Configuration Management Methods, and Software Testing Principles
  • Familiarity with Map/Reduce

This position requires an active Security Clearance.


Positions require a Top Secret security clearance, based on current background investigation (SBI), as well as the favorable completion of polygraph.  Clearance and polygraph processing will be completed by the U.S. Government.


ASRC Federal and its Subsidiaries are Equal Opportunity / Affirmative Action employers.  All qualified applicants will receive consideration for employment without regard to race, gender, color, age, sexual orientation, gender identification, national origin, religion, marital status, ancestry, citizenship, disability, protected veteran status, or any other factor prohibited by applicable law.


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