Network Engineer Principal
We are seeking aNetwork Engineer Principalto join our enterprise infrastructure team supporting a large, complex environment spanning cloud and enterprise network services. This is a hands-on engineering role responsible for implementing, operating, and continuously improving critical network capabilities that support secure access to applications, services, and the internet. The ideal candidate brings deep experience inenterprise networking, secure internet access, authentication, and cloud-connected SaaS infrastructure. This role focuses on maintaining and enhancing existing architecture while partnering closely with security, identity, and cloud engineering teams to ensure reliable and secure connectivity across the organization. You will join a collaborative engineering team responsible for internet edge services, secure access platforms, and foundational network services used by thousands of users and applications across hybrid cloud environments. MEANINGFUL WORK AND PERSONAL IMPACT Operate and enhance secure internet access servicesManage enterprise web traffic filtering and cloud-based secure web access platformsImplement and maintain URL filtering, SSL inspection, and threat protection policiesTroubleshoot user connectivity issues related to secure web access and policy enforcementSupport secure connectivity and network accessConfigure and maintain secure network tunnels using technologies such as GRE and IPSecSupport enterprise implementations ofZero Trust security modelsand access controlsImplement policies that enable secure access to modern business applications, including AI-enabled services, while maintaining organizational security postureDeliver secure browser and remote access capabilitiesConfigure and troubleshoot cloud browser isolation solutionsSupport secure access platforms that provide controlled access to internet and SaaS applicationsSupport enterprise authentication and application deliveryMaintain network services that support authentication mechanisms such as SAML and KerberosWork with application delivery and load balancing technologies, including global traffic distribution, SSL offloading/bridging, URI redirection, and HTTP profile configurationMaintain critical network infrastructure servicesManage DNS infrastructure, including record creation, monitoring, and troubleshootingImplement DNS security and protection capabilitiesSupport DNS integration with directory services and DHCP systemsCollaborate across engineering teamsWork closely with security, identity, and cloud engineering teams to implement network controls that support enterprise security initiativesMentor junior engineers and contribute to operational best practices and documentationParticipate in troubleshooting, change management, and incident response activities across network infrastructureWHAT YOULL NEED TO SUCCEEDBring your cyber expertise and drive for innovation to GDIT. The Network Security Engineer Principal must have: Education: Bachelors degree. In lieu of degree, 14+ years of experience supporting enterprise networking environments required. Experience: 10+ years of experience supporting enterprise networking environments Technical skills:Strong experience operatinginternet edge and secure access networking platforms; SASE toolsExperience implementing and troubleshootingsecure web access controls, including URL filtering and SSL inspectionHands-on experience configuringsecure tunnels and encrypted network connectivity(e.g., GRE, IPSec)Experience working in environments implementing SASE tools Zero Trust security principles Familiarity withcloud-connected networking environments, particularly in large hybrid infrastructuresExperience supportingapplication delivery and load balancing technologies, (F5 and/or CloudFlare) including authentication integration and SSL handlingStrong troubleshooting skills acrossnetwork, authentication, and application access layersExperience managingDNS infrastructure, including security, monitoring, and integration with directory servicesStrong understanding of networking fundamentals including routing, switching, encryption, and identity-aware access controlsZscaler and or cloudflare experience is required Role requirements: Ability to collaborate effectively across network, security, and identity teams in a large enterprise environment US Person Preferred skills and abilities:Industry certifications in networking, cloud networking, or security disciplinesExperience supporting networking within large-scale cloud SaaS (Zscaler/CloudFlare) platformsExperience supporting secure access solutions within enterprise-scale organizationsApplication delivery and load balancing technologies such as F5 and CloudFlareDNS infrastructure experience with BlueCat and CloudFlare GDIT IS YOUR PLACEAt GDIT, the mission is our purpose, and our people are at the center of everything we do. Growth: AI-powered career tool that identifies career steps and learning opportunities Support: An internal mobility team focused on helping you achieve your career goals Rewards: Comprehensive benefits and wellness packages, 401K with company match, and competitive pay and paid time off Community: Award-winning culture of innovation and a military-friendly workplace OWN YOUR OPPORTUNITYExplore a career in cyber at GDIT and youll find endless opportunities to grow alongside colleagues who share your focus on defending and protecting what matters.
