Infoblox Systems Engineer - TS/SCI with Polygraph

Public Trust: None

Requisition Type: Regular

Your Impact

Own your opportunity to serve as a critical component of our nation’s safety and security. Make an impact by using your expertise to protect our country from threats.

Job Description

SYSTEMS ENGINEER SR PRINCIPAL

GDIT is your place.  Make it your own by bringing your ideas and unique perspective to our culture.  By owning your opportunity at GDIT, you are helping us ensure today is safe and tomorrow is smarter.  Our work depends on an Infoblox Systems Engineer joining our team to support Government activities in Annapolis Junction, MD, Sterling, VA, or Colorado Springs, CO.

At GDIT, we foster a people-focused and customer-centric environment in delivering Network Engineering Services.  As an Infoblox Systems Engineer supporting the Government, you will be trusted to provide Enterprise Infoblox DDI and related services to the Government Agency’s internal/external partners and clients with a focus on stability and performance.

HOW A INFOBLOX SYSTEMS ENGINEER WILL MAKE AN IMPACT:

• Investigating and diagnosing incidents and problems relating to DDI (Infoblox DNS, DHCP, IPAM) and related services

• Ensuring the platforms and services are managed and maintained

• Helping identify and manage risks within the DDI platform

• Working with the Government lead and other service areas’ Architecture, Engineering & Operations leads and technical specialists, as well as professional services staff from vendors to implement the plan to deliver a strategic DDI platform and migrate all in-scope services from existing platforms

• Ensuring that system improvements and changes are implemented and monitoring effects of modifications

• Defining the capacity and performance standards, metrics and thresholds and helping build the instrumentation to effectively manage the environment

WHAT YOU’LL NEED TO SUCCEED:

• Active TS/SCI clearance with Polygraph
• Meet DoD 8570 IAT Level II requirements (e.g. Security+ CE, SSCP, GSEC, GICSP, CySA+, etc.) 
• Certification Requirement:
  • Infoblox NIOS DDI Operator (INO) and Infoblox NIOS DDI Administrator (INA) prior to start
• Bachelor’s degree in an IT-related field, or 12+ years of relevant IT experience in lieu of a degree
• Extensive recent experience configuring and managing DNS in a large enterprise.
• Strong knowledge of DNS, DHCP, IPAM, BIND, and NTP
• Understanding of broader technology domains such as storage, virtualization, networking, and data center operations
• Proven ability to troubleshoot complex cross-system issues, document root cause, and develop remediations
• Experience with Python and APIs 
• Self-driven, able to manage multiple tasks with minimal supervision

• Strong collaboration skills and ability to work across diverse technical teams
• Excellent verbal and written communication skills

GDIT IS YOUR PLACE:

• 401K with company match 

• Comprehensive health and wellness packages 

• Internal mobility team dedicated to helping you build your skills and own your career 

• Professional growth opportunities including paid education and certifications 

• Cutting-edge technology you can learn from

• Rest and recharge with paid vacation and 10 company-paid holidays  

#GDITCareers

#WeAreGDIT

#MD_Alumni2026

#VA_Alumni2026

#JET

OWN YOUR OPPORTUNITY
Explore an enterprise IT career at GDIT and you’ll find endless opportunities to grow alongside colleagues who share your desire to drive operations forward.

Work Requirements

Years of Experience

15 + years of related experience

* may vary based on technical training, certification(s), or degree

Certification

Security+ CE - CompTIA - CompTIA

Travel Required

None

Citizenship

U.S. Citizenship Required