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What You'll Need Strong networking fundamentals (TCP/IP, DNS, VLANs, routing/switching) Hands-on experience with firewalls and secure proxy solutions Understanding of security protocols (IPSec, SSL/TLS, MFA, etc.) Familiarity with monitoring tools and packet capture analysis Eligibility for DV clearance (British citizens only, no extended time abroad) ?? What's On Offer Salary circa More ❯

Access Manager eDirectory, SSPR, Advanced Authentication Privileged Access Management Experience with: Windows/Linux administration Networking (TCP/IP, firewalls, proxies) Databases (PostgreSQL, Oracle, MS SQL) Web technologies (HTTP, SSL, web servers) Cloud platforms (AWS, Azure) Containers (Docker, Kubernetes) Scripting (Python, Java, Shell) Soft Skills Strong communication and stakeholder management. Analytical mindset with a proactive, customer-focused approach. Ability to More ❯

experience, focusing on automation Production experience with Monitoring and Observability tools (Prometheus, Grafana, Datadog, Thanos, New Relic, Open Telemetry) Understanding of Cloud Networking concepts (Mesh Networking, NAT, Load Balancers, SSL Certificates and TLS termination, API Gateways, proxies, etc) Strong written and verbal communication, organization, and documentation skills Benefits: At Zefr, we embrace a flexible work environment that empowers our team More ❯

physical/remote), customer inventory management, EOL, hardware, software. Technical Environment: Cisco ISE, F5, Checkpoint, Juniper, Bluecoat, Cisco Networking, Cisco IPT/QoS/802.1x, switches, wireless, Inflobox DNS, SSL VPN, DMVPN, IPsec, WAN, routing protocols. SC Security Clearance is essential for this contract. More ❯

link to vendor support for Network Security infrastructure incidents. Technical Environment: Strong experience Checkpoint, Juniper, Bluecoat, F5 , Cisco networking, Cisco IPT/QoS/802.1x, switches, wireless, Inflobox DNS, SSL VPN, DMVPN, IPsec, WAN, routing protocols. Technical support, change management (physical/remote), customer inventory management, EOL, hardware, software. Ensures designs and implementations comply with enterprise security policies, standards, and More ❯

Management (Artifactory, Nexus) Code Quality & Security Analysis Tools (Sonar) Key Responsibilities Routine Platform Maintenance Apply security patches to infrastructure and services Perform regular backups and validate backup integrity Rotate SSL/TLS certificates and other secrets as required Monitor platform health and apply basic remediations Infrastructure Hygiene & Upkeep Clean up unused or legacy infrastructure components Maintain and update internal runbooks More ❯

in Azure * Oversee backup, DRaaS, and BaaS solutions (Zerto, Commvault), perform DR tests and restore checks * Maintain networking (SD-WAN, switches, routers, firewalls, load balancers, VPNs) * Handle certificate management (SSL), DNS, DHCP, and authentication (ADFS, SAML, WAP) * Keep CMDB and capacity planning records up to date * Collaborate on security monitoring and compliance activities, including audit support * Write and maintain PowerShell More ❯

version control, CI/CD pipelines, and resource management Experience using Docker to package and run applications Experience with Web-related protocols and technologies, such as web servers, HTTP, SSL Familiar with AWS/Cloud technologies Team Collaboration tools (Jira, Confluence) Preferred Qualifications: Previous experience supporting the NGA customer. Proficient in AWS/Cloud technologies Certification in AWS or Python More ❯

Proven ability to deliver projects on time and to spec, while managing multiple priorities Nice to Have VMware vSphere and SAN Storage Management Exposure to Linux , web domains, and SSL certificate management Broader cloud experience (e.g. AWS, GCP) Understanding of factory/industrial IT environments, ideally with familiarity with .NET/VB programming and OT systems Why Join? This is More ❯

Proven ability to deliver projects on time and to spec, while managing multiple priorities Nice to Have VMware vSphere and SAN Storage Management Exposure to Linux , web domains, and SSL certificate management Broader cloud experience (e.g. AWS, GCP) Understanding of factory/industrial IT environments, ideally with familiarity with .NET/VB programming and OT systems Why Join? This is More ❯

Proven ability to deliver projects on time and to spec, while managing multiple priorities Nice to Have VMware vSphere and SAN Storage Management Exposure to Linux , web domains, and SSL certificate management Broader cloud experience (e.g. AWS, GCP) Understanding of factory/industrial IT environments, ideally with familiarity with .NET/VB programming and OT systems Why Join? This is More ❯

or equivalent certification an added advantage.Experience in performance and security engineering including experience with concepts of zero trust networking and a familiarity of Application Layer Network Protocols - TLS/SSL, DNS, DHCP, etc. an added advantageSkilled in lifecycle management of network products and services including requirements analysis, platform selection, technical architecture design, service design & development, testing and deployment at scale More ❯

or equivalent certification an added advantage.Experience in performance and security engineering including experience with concepts of zero trust networking and a familiarity of Application Layer Network Protocols - TLS/SSL, DNS, DHCP, etc. an added advantageSkilled in lifecycle management of network products and services including requirements analysis, platform selection, technical architecture design, service design & development, testing and deployment at scale More ❯

equivalent certification an added advantage. Experience in performance and security engineering including experience with concepts of zero trust networking and a familiarity of Application Layer Network Protocols - TLS/SSL, DNS, DHCP, etc. an added advantage Skilled in lifecycle management of network products and services including requirements analysis, platform selection, technical architecture design, service design & development, testing and deployment at More ❯

equivalent certification an added advantage. Experience in performance and security engineering including experience with concepts of zero trust networking and a familiarity of Application Layer Network Protocols - TLS/SSL, DNS, DHCP. Skilled in lifecycle management of network products and services including requirements analysis, platform selection, technical architecture design, service design & development, testing and deployment at scale, including proficiency in More ❯

equivalent certification an added advantage. Experience in performance and security engineering including experience with concepts of zero trust networking and a familiarity of Application Layer Network Protocols - TLS/SSL, DNS, DHCP, etc. an added advantage Skilled in lifecycle management of network products and services including requirements analysis, platform selection, technical architecture design, service design & development, testing and deployment at More ❯

or more of the following ten (10): Public Key Enabling (PKE); RESTful services and containers (Oracle WebLogic, JBoss, Tomcat), Java programming language, Perl programing language , Java EE, Secure web (SSL) and file encryption, LDAP (RedHat directory) Java, Linux (CentOS), Modern IDEs (IntelliJ, Eclipse, etc.), Agile Scrum process Use of automated testing tools like Selenium a plus Knowledge of ActiveMQ, Artemis More ❯

version control, CI/CD pipelines, and resource management • Experience using Docker to package and run applications • Experience with Web-related protocols and technologies, such as web servers, HTTP, SSL • Familiar with AWS/Cloud technologies • Team Collaboration tools (Jira, Confluence) PREFERRED QUALIFICATIONS: • Previous experience supporting the NGA customer. • Proficient in AWS/Cloud technologies • Certification in AWS or Python More ❯

willing/eager to learn. DESIRED SKILLS • Experience with Windows and network administration • Familiarity with web proxies (iptables, mod_proxy, digital certificates, etc.), common web servers (i.e. Apache, NGINX), SSL certificates, and DNS records. • Experience with installing, configuring and maintaining physical server hardware • Experience monitoring network activity and network traffic redirection. • Experience with KVM and/or Proxmox • Experience with More ❯

data structures such as ArcSight's CEF or Splunk's SPL Advanced knowledge of TCP/IP (Transport protocols geared to Network Engineering - Maybe change to encryption methods e.g. SSL/TLS and PKI) protocols, experience configuring and implementing various technical security solutions, extensive experience providing analysis and trending of security log data from security devices Must have demonstrated the More ❯

/IP, Firewall, Routing/Switching, InTune & Conditional Access Technologies CCNA certification is desirable Knowledge of Networking (S2S/P2S VPN, VLAN, LACP), Firewalls (NAT/PAT/ACLs), SSL Certificates, Voice support and email security is desirable Current and valid UK driving license is desirable Experience of MSP and or Hospitality is advantageous but not essential Personal Excited about More ❯

/IP, Firewall, Routing/Switching, InTune & Conditional Access Technologies CCNA certification is desirable Knowledge of Networking (S2S/P2S VPN, VLAN, LACP), Firewalls (NAT/PAT/ACLs), SSL Certificates, Voice support and email security is desirable Current and valid UK driving license is desirable Experience of MSP and or Hospitality is advantageous but not essential Personal Excited about More ❯

implementation and support to Layer-3 networking. Extensive experience with Cisco's routing and switching portfolio. Prior experience in implementing and supporting DoD secure network environments (firewalls, encryption/SSL, network separation, VLANs, tunnels, TACLANES etc.) • 3+ years firewall experience. Highly familiar with firewall implementation, routing, protocol analysis and troubleshooting. • DoD 8570 IAT-II compliant (Security+ CE, CCNA-Security, CND More ❯

and managing Check Point and FortiGate firewalls. Strong understanding of network routing and switching protocols (e.g., BGP, OSPF, EIGRP, VLANs, STP). Strong understanding of VPN technologies, including IPsec, SSL, and GRE. Experience with network design and architecture, including capacity planning and performance optimization. Familiarity with network monitoring and management tools (e.g., SolarWinds, Nagios, PRTG, Wireshark). Excellent problem-solving More ❯

and their application in secure system design and monitoring. Knowledge of common enterprise network architectures and defense mechanisms Experienced in analyzing TCP/IP, DNS, HTTP/S, SSL/TLS, SMB, and RDP protocols to identify vulnerabilities, misconfigurations, and indicators of malicious activity. Why Join Us: We don t just invest in our mission we invest in you. From More ❯