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Network Engineer/DNS Administrator

Crystal Management
Arlington, VA
  • Expired: over a month ago. Applications are no longer accepted.
Job Description


Since 2005, Crystal Management provides information technology (IT) infrastructure, systems integration, cybersecurity, facility design and transition, and professional services to customers in the defense, civilian federal agencies, homeland security, intelligence, and commercial sectors. We understand the mission demands innovative approaches, technology, and people. With talented professionals deployed worldwide, Crystal Management delivers IT enterprise solutions, systems engineering, and management consulting services for the largest transformation and restationing programs in defense history. Crystal Management is a service-disabled veteran-owned small business.

Position Summary

The Network Engineer/DNS Administrator is responsible for the administration and management of the enterprise with primary responsibility towards BINDS / DNS for more than 8000 networked devices. The position will provide comprehensive system administration, security enhancements and remediation, and troubleshooting of InfoBlox, DNS, and Operating Systems. This position requires an understanding of best practices pertaining to network security and may require the development, deployment, and integration of network services such as InfoBlox. Must be able to work both independently and as part of a team.


  • Provides administration and management of Infoblox IP Address Management (IPAM) Platform
    Creation and de-commission of IP space for multiple customers
    DHCP Management and configuration
    Provides problem and incident resolution, including dealing with software and hardware vendor technical support
    Deploy and maintain network hardware, peripherals, services, and settings in accordance with industry standards and project/operational requirements
    Performs daily system monitoring; verifies the integrity and availability of hardware, services, systems, and key processes; reviews system and application logs
    Documents and performs network upgrades and modifications during ASI windows
    Provides on-call troubleshooting and issue resolution as required
    Develops and maintains installation and configuration procedures
    Partner with the information security personnel to assess potential exposure to vulnerabilities, identify mitigation plans, and ensure compliance with enterprise security baselines and standards
    Acts as a liaison with other groups to provide information sharing pertaining to the needs of the diverse set of computer users supported by the client as a whole.
    Develop scripts and other automation solutions to aid in the completion of migration and integration tasks.
    Review problems to understand the root causes of issues and ensure proper fixes are implemented
    Inform management in a clear, concise, and timely manner of any customer or technical issues
    Be responsive and decisive on adjusting architecture as customer requirements and technology evolves
    Coordinate with on-site support personnel while troubleshooting
    Use enterprise service management tools to initiate, respond, and track service requests
    Create reports and analyze performance metrics
    Adhere to change management processes and procedures

Education/Certification Requirements

  • Bachelor's degree in a related field or work experience considered in lieu of degree.
  • Masters degree may be substituted for two (2) years experience; or a doctoral degree may be substituted for three (3) years experience. Four (4) years experience (in addition to minimum experience requirements) may be substituted for a Bachelors degree.
  • Must have a DoD 8570 IAT Level II certification (e.g., CCNA Security, CySA+, GICSP, GSEC, Security+ CE, CND, or SSCP)
  • Networking Certification required (e.g., InfoBlox, Linux Administration, Cisco (CCNA/CCNP), Juniper (JNCIA/JNCIS/JNCIP), Aruba, or Arista)
  • Aruba Certification (ACSA orACSP) preferred

Required Qualifications

  • 8+ years of related experience
  • Experience managing and troubleshooting DNS, DHCP, IPAM, and NTP in a large multi-site environment
  • Possess flexibility to operate in a highly dynamic environment while ensuring a high level of operational effectiveness
  • Detail-oriented with the ability to work well in a team environment
  • Extensive experience troubleshooting, managing, and monitoring services such as BIND (DNS)
  • Experience building configurations using CLI
  • Experience creating & updating network topologies using Visio
  • Creating and documenting processes and creating work instructions
  • Experience working as a part of a large team and working directly with customers
  • Excellent hardware troubleshooting experience.
  • Experience creating scripts to automate routine administration tasks
  • Excellent verbal skills and ability to communicate effectively with people who have varying degrees of technical expertise
  • Strong customer service skills

Preferred Qualifications:

  • Experience with F5 load balancers to include troubleshooting, configuring, upgrading, maintaining, and monitoring an enterprise F5 load balancer network architecture (F5 Network certification a plus)
  • Experience with Infoblox IP Address Management (IPAM) and DHCP Administration
  • Experience utilizing Remedy ITSM
  • Experience administering and troubleshooting server operating systems such as Linux, Windows, or UNIX
  • Experience with LDAP/PKI preferred
  • Broad understanding of network infrastructure topologies, security policies, firewalls, and the L2/L3 switch and router infrastructure
  • Experience with Network Management & Performance platforms, such as NetScout / Science Logic

Clearance Requirements

  • Active TS/SCI clearance

COVID-19 Vaccination Requirement: To protect the health and safety of its employees and to comply with customer requirements, employees in certain positions may be required to be fully vaccinated against COVID-19. Vaccination requirements will depend on the status of the federal contractor mandate and customer site requirements

Crystal Management, LLC provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state or local laws.

This policy applies to all terms and conditions of employment, including recruiting, hiring, placement, promotion, termination, layoff, recall, transfer, leaves of absence, compensation, and training.



Crystal Management


Arlington, VA
22202 USA



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