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Principal Engineer Network III (26-391)

Northrop Grumman

Principal Engineer Network III (26-391)

full-timePosted: Aug 31, 2026Updated: Sep 1, 2026United States-Colorado-Colorado Springs

Job Description

RELOCATION ASSISTANCE: No relocation assistance availableCLEARANCE REQUIRED FOR START: YesCLEARANCE TYPE: Top SecretTRAVEL: Yes, 10% of the TimeDescriptionAt Northrop Grumman, our employees have incredible opportunities to work on revolutionary systems that impact people's lives around the world today, and for generations to come. Our pioneering and inventive spirit has enabled us to be at the forefront of many technological advancements in our nation's history - from the first flight across the Atlantic Ocean, to stealth bombers, to landing on the moon. We look for people who have bold new ideas, courage and a pioneering spirit to join forces to invent the future, and have fun along the way. Our culture thrives on intellectual curiosity, cognitive diversity and bringing your whole self to work — and we have an insatiable drive to do what others think is impossible. Our employees are not only part of history, they're making history.Northrop Grumman Space Systems—Missile Defense Integration offers an excellent opportunity for a Principal Engineer Network III (26-391) to join our team of skilled and diverse professionals. Based in Colorado Springs, CO, this role is essential to supporting the U.S. President, the Secretary of Defense, and combatant commanders at the strategic, regional, and operational levels.This position does not provide relocation assistance and requires on-site work with no remote options.Position Overview:The Command and Control, Battle Management, and Communications (C2BMC) program is a key component of the Missile Defense System. It is a vital operational system that enables the U.S. president, the Secretary of Defense, and combatant commanders at strategic, regional, and operational levels to plan ballistic missile defense operations systematically, collectively monitor the battle, and dynamically control networked sensors and weapon systems to achieve global and regional mission goals. C2BMC supports layered missile defense capabilities that enable an optimized response to threats across all ranges and flight phases. It serves as a force multiplier by networking, integrating, and synchronizing autonomous sensor and weapon systems and operations, both globally and regionally, to improve performance. C2BMC is essential for all ground and flight tests that verify and demonstrate the current and future capabilities of missile defense systems.In this role, the candidate will serve as a Network Development Engineer, supporting build-out and deployments to the operational environment as needed. The candidate will work within an agile Scrum team and plan work based on customer requirements and program contractual agreements. The candidate will be a primary Network Engineer supporting the C2BMC Program.Essential Functions:Candidate will be responsible for planning, deploying, integrating, and testing upgrades to the C2BMC network to operational sitesCandidate will be responsible for traveling to remote locations to lead and perform network installations, independently perform troubleshooting, and provide status updates to Program personnelBasic Qualifications: Please list your current security clearance and IAT or relevant certifications on your resume, if applicable. A Bachelor’s Degree in Computer Science, Network Engineering, Engineering, Mathematics, Physics, or a related field from an accredited university, along with 5 years of experience; or a Master’s degree in a related field with 3 years of relevant work experience; or 9 years of relevant work experience may be considered as an alternative to a degreeApplicants must have a current, active Government-Issued 8140 certification at IAT Level II or higher (such as Security+, GSEC, SCNP, SSCP, CISSP, CISA, GSE, SCNA, etc.) at the time of application, which is required to start. The candidate is responsible for maintaining their 8140 certifications throughout the entire contract periodApplicants must have a current, active in-scope Government-issued Top Secret security clearance at the time of application, which is required to startThis role necessitates holding either a CCNA or JNCIA certificationThe position is based at an LM facility in Colorado Springs, CO, on a long-term basis. However, this role must be able to travel to alternate work locations, such as Schriever Space Force Base, Alaska, Guam, and Europe, to perform job duties, including deployments.Must be a proven network engineer with hands-on mid-level experience and knowledge of network design, development, and testing methodologiesMust understand the OSI Model, TCP/IP, and routing protocols BGP and OSPFMust have network traffic analysis, diagnostic, and troubleshooting skillsMust have firewall experience – especially Juniper, Fortinet, and Palo AltoMust have experience with UDP multicast, SONET, MSPP, VLANs, GRE tunnels, and TCP/IP network designsMust possess practical experience with multi-vendor switching and routing (Juniper, Cisco), WAN optimizers, TACLANEs, and optical transport equipmentMust possess strong communication skills, excellent writing and presentation abilities, and proficiency in Microsoft Office, particularly PowerPoint and VisioMust thrive and perform your best in a collaborative, Agile environmentMust understand standard DOD security practices, such as STIG compliance and system accreditation implementation effortsPreferred Qualifications:Familiarity with virtualization technologies – NFV, SDWAN, VMware, VMware Cloud Foundation, NSX, vSAN, and Aria is desiredExperience with network automation using Ansible is desiredPrior C2BMC experience is desiredWhat We Can Offer You:Northrop Grumman provides a comprehensive benefits package and a supportive work environment that encourages your growth, benefiting both employees and the company. The benefits are flexible and customizable, enabling you to choose options that suit your individual and family needs. Your benefits will include the following:Health PlanSavings PlanPaid Time OffEducation AssistanceTraining and DevelopmentFlexible Work Arrangementshttps://benefits.northropgrumman.com/us/en2/BenefitsOverview/Pages/default.aspx#NGSpace#COSpace#NGFeaturedJobs#C2BMCPrimary Level Salary Range: $94,200.00 - $141,200.00The above salary range represents a general guideline; however, Northrop Grumman considers a number of factors when determining base salary offers such as the scope and responsibilities of the position and the candidate's experience, education, skills and current market conditions.Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay. Annual bonuses are designed to reward individual contributions as well as allow employees to share in company results. Employees in Vice President or Director positions may be eligible for Long Term Incentives. In addition, Northrop Grumman provides a variety of benefits including health insurance coverage, life and disability insurance, savings plan, Company paid holidays and paid time off (PTO) for vacation and/or personal business.The application period for the job is estimated to be 20 days from the job posting date. However, this timeline may be shortened or extended depending on business needs and the availability of qualified candidates.Northrop Grumman is an Equal Opportunity Employer, making decisions without regard to race, color, religion, creed, sex, sexual orientation, gender identity, marital status, national origin, age, veteran status, disability, or any other protected class. For our complete EEO and pay transparency statement, please visit http://www.northropgrumman.com/EEO. U.S. Citizenship is required for all positions with a government clearance and certain other restricted positions.

Locations

  • United States-Colorado-Colorado Springs

Skills Required

  • network designintermediate
  • UDP multicastintermediate
  • multi-vendor switchingintermediate
  • Microsoft Officeintermediate
  • virtualization technologies – NFVintermediate
  • network automation using Ansible is desiredintermediate

Required Qualifications

  • Please list your current security clearance and IAT or relevant certifications on your resume, if applicable. (certification)
  • A Bachelor’s Degree in Computer Science, Network Engineering, Engineering, Mathematics, Physics, or a related field from an accredited university, along with 5 years of experience; or a Master’s degree in a related field with 3 years of relevant work experience; or 9 years of relevant work experience may be considered as an alternative to a degree (experience, 5 years)
  • Applicants must have a current, active Government-Issued 8140 certification at IAT Level II or higher (such as Security+, GSEC, SCNP, SSCP, CISSP, CISA, GSE, SCNA, etc.) at the time of application, which is required to start. The candidate is responsible for maintaining their 8140 certifications throughout the entire contract period (certification)
  • Applicants must have a current, active in-scope Government-issued Top Secret security clearance at the time of application, which is required to start (experience)
  • This role necessitates holding either a CCNA or JNCIA certification (certification)
  • The position is based at an LM facility in Colorado Springs, CO, on a long-term basis. However, this role must be able to travel to alternate work locations, such as Schriever Space Force Base, Alaska, Guam, and Europe, to perform job duties, including deployments. (experience)
  • Must be a proven network engineer with hands-on mid-level experience and knowledge of network design, development, and testing methodologies (experience)
  • Must understand the OSI Model, TCP/IP, and routing protocols BGP and OSPF (experience)
  • Must have network traffic analysis, diagnostic, and troubleshooting skills (experience)
  • Must have firewall experience – especially Juniper, Fortinet, and Palo Alto (experience)
  • Must have experience with UDP multicast, SONET, MSPP, VLANs, GRE tunnels, and TCP/IP network designs (experience)
  • Must possess practical experience with multi-vendor switching and routing (Juniper, Cisco), WAN optimizers, TACLANEs, and optical transport equipment (experience)
  • Must possess strong communication skills, excellent writing and presentation abilities, and proficiency in Microsoft Office, particularly PowerPoint and Visio (experience)
  • Must thrive and perform your best in a collaborative, Agile environment (experience)
  • A Bachelor’s Degree in Computer Science, Network Engineering, Engineering, Mathematics, Physics, or a related field from an accredited university, along with 5 years of experience; or a Master’s degree in a related field with 3 years of relevant work experience; or 9 years of relevant work experience may be considered as an alternative to a degree (experience, 5 years)
  • Applicants must have a current, active Government-Issued 8140 certification at IAT Level II or higher (such as Security+, GSEC, SCNP, SSCP, CISSP, CISA, GSE, SCNA, etc.) at the time of application, which is required to start. The candidate is responsible for maintaining their 8140 certifications throughout the entire contract period (certification)
  • Applicants must have a current, active in-scope Government-issued Top Secret security clearance at the time of application, which is required to start (experience)
  • This role necessitates holding either a CCNA or JNCIA certification (certification)
  • The position is based at an LM facility in Colorado Springs, CO, on a long-term basis. However, this role must be able to travel to alternate work locations, such as Schriever Space Force Base, Alaska, Guam, and Europe, to perform job duties, including deployments. (experience)
  • Must be a proven network engineer with hands-on mid-level experience and knowledge of network design, development, and testing methodologies (experience)
  • Must understand the OSI Model, TCP/IP, and routing protocols BGP and OSPF (experience)
  • Must have network traffic analysis, diagnostic, and troubleshooting skills (experience)
  • Must have firewall experience – especially Juniper, Fortinet, and Palo Alto (experience)
  • Must have experience with UDP multicast, SONET, MSPP, VLANs, GRE tunnels, and TCP/IP network designs (experience)
  • Must possess practical experience with multi-vendor switching and routing (Juniper, Cisco), WAN optimizers, TACLANEs, and optical transport equipment (experience)
  • Must possess strong communication skills, excellent writing and presentation abilities, and proficiency in Microsoft Office, particularly PowerPoint and Visio (experience)
  • Must thrive and perform your best in a collaborative, Agile environment (experience)
  • Must understand standard DOD security practices, such as STIG compliance and system accreditation implementation efforts (experience)
  • Must understand standard DOD security practices, such as STIG compliance and system accreditation implementation efforts (experience)

Preferred Qualifications

  • Familiarity with virtualization technologies – NFV, SDWAN, VMware, VMware Cloud Foundation, NSX, vSAN, and Aria is desired (experience)
  • Familiarity with virtualization technologies – NFV, SDWAN, VMware, VMware Cloud Foundation, NSX, vSAN, and Aria is desired (experience)
  • Experience with network automation using Ansible is desired (experience)
  • Experience with network automation using Ansible is desired (experience)
  • Prior C2BMC experience is desired (experience)
  • Prior C2BMC experience is desired (experience)

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