Cyber Essentials, NIST, ISO 27001. An understanding of network security and compliance in regulated environments. Strong networking knowledge (LAN, WAN, DNS, DHCP, VPN, TCP/IP). Proficiency in firewall and load balancer technologies for secure environments. Hands-on experience with virtualization platforms (VMware, Citrix Xen) and backup solutions (Veeam or similar). Experience with monitoring tools (SolarWinds SentryOne, Zabbix More ❯
and modernise operations across the board, which includes furthering the skills of our colleagues. At DXC, building a better you, builds a better us. We are seeking a skilled Firewall Engineer to be based from our Erskine site to design, implement, manage, and troubleshoot firewall solutions to protect our organizations network infrastructure. The ideal candidate will have in-depth knowledge … of firewall technologies, network security principles, and best practices to ensure robust defense against cyber threats. Key Responsibilities: Design, deploy, configure, and maintain firewall infrastructure (e.g., Cisco ASA, Palo Alto, Fortinet, Check Point). Monitor firewall performance and analyze security logs to detect and respond to security incidents. Implement firewall rules, policies, and access control lists (ACLs) based on organizational … security requirements. Collaborate with network, security, and IT teams to ensure seamless integration of firewall systems. Conduct firewall rule reviews, audits, and compliance checks regularly. Troubleshoot and resolve firewall-related issues promptly to minimize downtime. Stay updated with the latest security threats and firewall technologies to recommend improvements. Document firewall configurations, changes, and procedures for audit and knowledge sharing. Participate More ❯
in existing multi-tenant cloud/virtualized platform on Azure Government (Azure-Gov) and Amazon Web Services Government (AWS-G). Responsible for assessing and facilitating network requests: including firewall policies, VPN, load balancing, cryptography, and network architecture. Design and implement security-first network policies and procedures to adhere with NIST 800.171 and CMMC compliance regulations. Communicates effectively with end More ❯
network engineers to diagnose and resolve LAN, WAN, and Wi-Fi connectivity issues Monitor critical network services like DNS and DHCP to ensure consistent system functionality Assist in reviewing firewall rules to support secure access to Windows servers Contribute to the planning and deployment of VPNs, remote access solutions, and network segmentation strategies Troubleshoot shared infrastructure issues, including domain name More ❯
storage solutions, preferably Dell hardware Backup and recovery systems implementation and monitoring Networking Cisco network device configuration, routing/switching, and troubleshooting Network segmentation and security hardening best practices Firewall and VPN management Cybersecurity & Compliance Understanding and application of NIST SP 800-53 security controls Familiarity with FISMA compliance requirements Experience with the system accreditation and authorization process (ATO lifecycle More ❯
Huntingdon, Cambridgeshire, East Anglia, United Kingdom Hybrid / WFH Options
Leidos Innovations UK Limited
Experience in the installation, configuration and maintenance of Windows Server Update Services (WSUS). Experience of SQL Server. Experience of network setup and configuration (TCP/IP, DNS, DHCP, Firewall skills). Knowledge of backup technologies. Experience of desktop rollout and configuration. Experience of cloud-based deployment. Experience configuring and maintaining monitoring tools and systems. Defence experience. ITIL Foundation Qualification. More ❯
role Strong knowledge of TCP/IP, DNS, DHCP, routing protocols, and network security best practices Experience with network hardware such as Cisco, Juniper, or equivalent equipment Proficient in firewall management and VPN configuration Excellent troubleshooting and problem-solving skills Familiarity with Microsoft Active Directory, Office 365, and network monitoring tools Strong communication and teamwork skills Scripting or automation skills More ❯
plans Researches, designs, and implements security solutions for network infrastructure Tracks and reports identified information system vulnerabilities Monitors, reviews, analyzes, performance tunes, and make recommendations to optimize network Manages firewall security appliances Keeps the Division abreast of emerging network technologies and the latest network standard Leads projects as an Engineering Lead and/or Project Manager to develop secure, resilient More ❯
plans Researches, designs, and implements security solutions for network infrastructure Tracks and reports identified information system vulnerabilities Monitors, reviews, analyzes, performance tunes, and make recommendations to optimize network Manages firewall security appliances Keeps the Division abreast of emerging network technologies and the latest network standard Leads projects as an Engineering Lead and/or Project Manager to develop secure, resilient More ❯
cross-team collaboration. Key Responsibilities: Deploy, configure, and manage a wide range of security technologies, including Zscaler services (ZIA, ZPA, ZDX), EDR, DLP, secure web gateway, email security, IDPS, firewall, SIEM, and identity protection tools. Responsibilities include policy configuration, SAML integrations, monitoring, and user onboarding for Zscaler platforms. Integrate security tools with Microsoft platforms such as Azure AD, Conditional Access More ❯
protection) • Familiarity with compliance frameworks (NIST, FedRAMP, FISMA) • CompTIA Security+, CISSP, or other cybersecurity certifications • Experience with automation and infrastructure as code practices • Knowledge of network security appliances and firewall management • Background in DevOps practices and CI/CD pipeline integration More ❯
and cross-team collaboration. Key Responsibilities: Deploy, configure, and manage Zscaler services (ZIA, ZPA, ZDX) and other security technologies such as EDR, DLP, secure web gateway, email security, IDPS, firewall, SIEM, and identity protection tools. Integrate security solutions with Microsoft platforms, including Azure AD, Conditional Access, Intune, and Microsoft Defender. Configure and manage policies, SAML integrations, monitoring, and user onboarding More ❯
using VMware, Hyper-V, or KVM Manage storage systems, including XFS NAS in virtualized environments (e.g., TrueNAS) Apply patches, monitor logs, and enforce cybersecurity policies using firewalld, SELinux, Windows Firewall, etc. Implement and manage VPNs, user access controls, and endpoint protection Troubleshoot network and system-level issues in hybrid Linux/Windows environments Automate tasks and deployments using Bash, PowerShell More ❯
eligible for a Public Trust clearance. Key Responsibilities: Deploy, configure, and manage Zscaler services (ZIA, ZPA, ZDX) and technologies such as EDR, DLP, secure web gateway, email security, IDPS, firewall, SIEM, and identity protection tools. Integrate security solutions with Microsoft platforms including Azure AD, Conditional Access, Intune, and Microsoft Defender. Configure and manage policies, perform SAML integrations, monitoring, and user More ❯
and troubleshooting Cisco, Palo Alto and Juniper routers, switches and Local Area Network (LAN) Collapse/Extension and migration Proficiency in Network Design, implementation, troubleshooting and optimization Experience in Firewall, VTC configuration deployment and troubleshooting Working knowledge of virtualization technologies (e.g, VMware, Hyper-V), services, architectures/designs, and best practices Strong understanding of network security principles and practices. Familiarity More ❯
flow performance prioritization, monitoring, and visibility • Automated network path selection for optimization of application performance • Packet replication across multiple network access segments to improve overall service robustness • Next-Generation firewall and intrusion detection/prevention capabilities for edge devices • Conduct advanced security analytics for encrypted networks • Willingness to stay updated with the latest trends and advancements in SD-WAN and More ❯
Over Internet Protocol (VoIP). Technical competency in one or more of the following supported platforms: MS Hyper-V/VMWare/ESXi/Xen Hypervisors, Enterprise networking and firewall systems, Group Policy configuration, WSUS, Bitlocker, SQL Server, Internet Information Service (IIS), Windows Server 2019/2022, and Windows 10/11 Works with Cybersecurity Personnel to establish Disaster Recovery More ❯
devices including, but not limited to the following: KG175, KG250, KG250xs, etc. • Experience with network security best practices, and technologies including, but not limited to, SSH, IPSec, RADIUS, TACACS, firewall policies, and 802.1x. • Experience implementing network performance management solutions (SolarWinds, NetScout Infini Stream, and Gigamon Deep Observability) and troubleshooting with packet, session and log data. • Working knowledge of Cisco IP More ❯
Oak Ridge, Tennessee, United States Hybrid / WFH Options
Mission Services LLC (MSI)
Infrastructure Operations Manager. Key Responsibilities: • Network Management: Configure, monitor, and troubleshoot enterprise-level network devices, including routers, switches, firewalls, and load balancers. • Security: Implement and manage security protocols, including firewall policies, VPNs, and IDS/IPS systems. • Remote and On-site Support: Provide both remote and on-site support, including racking and un-racking network equipment, and manage network infrastructure More ❯
IaC) tools such as Terraform, AWS CloudFormation, or Ansible. • Security: o Network security best practices. o Zero Trust network principles. o Cloud-native security services (AWS Security Groups, Azure Firewall, etc.). • Monitoring & Troubleshooting: o Cloud-native monitoring tools (e.g., AWS CloudWatch, Azure Monitor). o Third-party tools (Datadog, Splunk, SolarWinds). Professional Certifications • Cloud Certifications: o AWS Certified More ❯
and troubleshooting Cisco, Palo Alto and Juniper routers, switches and Local Area Network (LAN) Collapse/Extension and migration Proficiency in Network Design, implementation, troubleshooting and optimization Experience in Firewall, VTC configuration deployment and troubleshooting Working knowledge of virtualization technologies (e.g, VMware, Hyper-V), services, architectures/designs, and best practices Strong understanding of network security principles and practices. Familiarity More ❯
Monitor network performance and troubleshoot issues. • Maintain and upgrade routers, switches, firewalls, and other network devices (Cisco, Juniper, Palo Alto, etc.). • Implement and manage network security measures, including firewall rules, intrusion detection/prevention, and access controls. • Collaborate with cross-functional teams to support deployments and cross domain issues. • Lead or participate in network-related projects, migrations, and integrations. More ❯
back-end components. • Gather needed data to specify system/component performance and interface requirements. • Implement specific network solutions to support server requirements to include load-balancing, VPN's, firewall contexts, Traffic Shaping Voice over IP (VoIP), GRE Tunneling, IP Security (IPSec), IP Encryption, • Media over IP (MoIP), and network address translation (NAT) where appropriate. • Must have flexible working hours More ❯
