Senior Network Administrator

Job description

Title: Senior Network Administrator KBR Sustainable Technology Solutions (STS) provides holistic and value-added solutions across the entire asset life cycle. These include world-class licensed process technologies, differentiated advisory services, deep technical domain expertise, energy transition solutions, high-end design capabilities, and smart solutions to optimize planned and operating assets. KBR is looking for a Senior Network Administrator to be responsible for the administration, maintenance, security, and operational reliability of enterprise network infrastructure supporting KBR operations. You will provide advanced technical administration across network, connectivity, security, and related infrastructure platforms, ensuring the availability, performance, and resilience of critical services. You will require deep technical knowledge of enterprise networking technologies, the ability to resolve complex operational issues, and the capability to work independently with minimal guidance. You will also contribute directly to service stability, operational excellence, and infrastructure modernization initiatives while acting as a technical resource for colleagues within the team. This role does not include supervisory or people management accountability. Functional job responsibilities will include but are not limited to: Network Administration Administer enterprise network infrastructure, including: LAN, WAN, wireless, and data center networking platforms Routing and switching technologies Software-defined networking and SD-WAN environments Network access control and identity-aware networking services Install, configure, maintain, and upgrade network infrastructure in accordance with operational standards. Perform routine lifecycle management activities, including software updates, hardware maintenance, and technology refresh activities. Maintain accurate network documentation, configuration standards, and operational records. Network Security & Connectivity Administer and support enterprise network security technologies, including firewalls, VPN services, and secure remote-access solutions. Maintain network segmentation, access control, and secure connectivity frameworks. Support vulnerability remediation and implementation of network security controls. Ensure network services comply with organizational security standards and governance requirements. Data Centre & Cloud Networking Support enterprise data center networking environments and associated connectivity services. Administer load balancing and application delivery platforms. Support hybrid cloud and cloud networking services. Maintain reliable connectivity between on-premises infrastructure, cloud platforms, remote locations, and hosted environments. Support network architecture and capacity growth initiatives. Infrastructure Integration Collaborate with server, storage, backup, cloud, and cybersecurity teams to ensure reliable infrastructure operations. Support infrastructure services where networking dependencies exist. Maintain a working understanding of compute, virtualization, storage, and application dependencies to support effective troubleshooting and escalation. Contribute to infrastructure availability, resilience, and recovery initiatives. Operational Support Monitor network health, availability, performance, and capacity using established operational tools and procedures. Diagnose and resolve complex networking and infrastructure incidents. Support incident, problem, and change management processes. Participate in major incident investigations and root-cause analysis activities. Maintain technical documentation, operational runbooks, and support procedures. Recovery, Resilience & Security Support network-related disaster recovery and resilience initiatives. Participate in infrastructure recovery testing and operational readiness activities. Maintain network configurations and controls that support business continuity objectives. Ensure network services remain compliant with organizational security and audit requirements. Collaboration & Technical Contribution Work independently on assigned systems and operational activities. Collaborate with related IT teams, service providers, and project teams to resolve technical issues. Act as a technical resource and provide guidance to colleagues with less experience. Contribute to operational improvements, technical standards, and infrastructure modernization initiatives. Support project delivery and technology implementation activities as required. Required Education, Experience, & Skills: Technical Skills & Experience Strong hands-on experience supporting enterprise networking environments. Experience with routing, switching, network segmentation, and secure connectivity technologies. Experience with network access control, identity-aware networking, and enterprise security platforms. Experience supporting firewall technologies, VPN solutions, and secure remote access services. Experience with load balancing and application delivery technologies. Experience supporting cloud networking and hybrid connectivity solutions. Experience supporting enterprise infrastructure environments including Windows, Linux, and virtualization platforms. Familiarity with structured IT operational environments and service management processes. Experience troubleshooting complex networking and infrastructure-related issues. Professional Capability Able to work independently with minimal supervision. Demonstrated ability to analyze and resolve complex technical problems. Exercises sound technical judgement using multiple sources of information. Strong operational discipline and attention to detail. Effective written and verbal communication skills. Ability to collaborate effectively across technical and business teams Install, configure, maintain, and upgrade network infrastructure in accordance with operational standards. Perform routine lifecycle management activities, including software