systems role and strong working knowledge of: • Microsoft 365 • Microsoft Azure • Microsoft Entra • Intune • Windows Server (2016/2019/2022) • Active Directory • Windows networking • Basic routing, switching, and firewall rules • Printer support and troubleshooting You’ll also need: • Excellent written and verbal communication skills • A strong customer-focused attitude • A proactive, can-do approach to problem-solving Why Join More ❯
Develop and implement scalable, reliable, and secure network infrastructures, including LAN, WAN, and cloud integrations, to support enterprise needs. • Routing & Switching Configuration - Design and configure network routing, switching, and firewall systems to optimize data flow, enhance performance, and ensure redundancy. • Troubleshooting & Optimization - Monitor network performance, identify bottlenecks or vulnerabilities, and provide solutions to ensure optimal connectivity, security, and uptime across More ❯
providing advanced troubleshooting. Strong knowledge of Linux and Windows systems, and experience with FreeSwitch. Experience with AWS infrastructure and cloud services. Deep understanding of SIP, VoIP, VoLTE, STUN, and firewall bridging. Proficiency in Node.js application support and server diagnostics. Hands-on experience using tools for SIP analysis, such as Wireshark, SIP Traces, or packet analysers. Excellent problem-solving and communication More ❯
providing advanced troubleshooting. Strong knowledge of Linux and Windows systems, and experience with FreeSwitch. Experience with AWS infrastructure and cloud services. Deep understanding of SIP, VoIP, VoLTE, STUN, and firewall bridging. Proficiency in Node.js application support and server diagnostics. Hands-on experience using tools for SIP analysis, such as Wireshark, SIP Traces, or packet analysers. Excellent problem-solving and communication More ❯
Active Directory, Group Policy, and Windows 10/11. Hands-on experience with DNS, DHCP, Exchange Online, and network protocols. Competence in VMware ESXi, Veeam backup solutions, and firewall configurations. Administration of Google Workspace (G Suite), Chromebooks, and Microsoft 365 (Teams, SharePoint). Experience managing 1st to 3rd line support operations. Strong understanding of IT security and safeguarding responsibilities. Desirable More ❯
Active Directory, Group Policy, and Windows 10/11. Hands-on experience with DNS, DHCP, Exchange Online, and network protocols. Competence in VMware ESXi, Veeam backup solutions, and firewall configurations. Administration of Google Workspace (G Suite), Chromebooks, and Microsoft 365 (Teams, SharePoint). Experience managing 1st to 3rd line support operations. Strong understanding of IT security and safeguarding responsibilities. Desirable 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 ❯
and DISA STIG implementations to maintain a secure and stable environment. • Configure and manage WSUS/SCCM for patching and application management. • Implement and enforce security best practices, including firewall configurations, intrusion detection, and access control measures. • Monitor system performance, troubleshoot issues, and implement optimizations for improved efficiency. • Develop and maintain comprehensive documentation of Linux and Windows infrastructure, including processes More ❯
in a team leader or supervisory role Installing, configuring and supporting Windows and/or Linux operating systems Detailed understanding of network architecture, with a focus on Palo Alto firewall and network security technologies In-depth knowledge of hypervisor technologies, including VMware, VxRail and Hyper-V Experience using a variety of IT administration and management applications Awareness of cyber security More ❯
knowledge of Cisco and Juniper platforms as demonstrated through extensive experience. CWNP and related certifications are strongly preferred.Additional skills that would be beneficial for this role include Palo Alto Firewall, Cisco ISE, and Microsoft Azure.Experience mentoring junior team members is also preferred. Excellent communications and analytical skills, strong technical project management skills will be essential for this position. Join our More ❯
and hardware skills Experience of Microsoft Windows Server/Desktop environments Detailed experience with Backup/DRaaS technologies, Azure Active Directory & IaaS Knowledge of networking technologies - TCP/IP, Firewall, Routing/Switching Ability to run, patch and terminate cabling to support installation of new hardware Strong knowledge of InTune & Conditional Access Technologies and security Experience of MSP and or More ❯
Backup and Recovery devices, Firewalls, and security appliances. Must have experience with typical data center related software such as Virtualization platforms, Microsoft/Linux server management, Network Switch and Firewall client applications, antivirus, and backup and recovery software. Must have at least seven (07) years of experience with infrastructure components Servers, Switches, Firewalls, and other Enterprise Infrastructure hardware . Must More ❯
to the network infrastructure. • Participate in on-call support rotation to address network incidents and outages as they arise. Required Skills/Qualifications: • Experience with Cisco switching, routing and firewall hardware and common network concepts such as LAN/WAN, perimeter, IPSec, routing/switching, packet filtering, IDS/IPS, authentication, cabling, and troubleshooting • Experience performing network security implementations or More ❯
experience Experience implementing various network technologies and end-user support. Demonstrated progressive experience in the use of routing protocols and switching technologies, LAN/WAN medias and protocols, and firewall configuration and protocols. Ability to plan and organize work and interact with technical and non-technical personnel translating user requirements into responsive applications. Demonstrated detailed knowledge of IA concepts and More ❯
experience Some experience implementing various network technologies and end-user support. Some experience in the use of routing protocols and switching technologies, LAN/WAN medias and protocols, and firewall configuration and protocols. Familiarity with Information Assurance concepts and requirements. Current certification in one of the following: Cisco Certified Network Associate (CCNA) or CompTIA Network+. DoD 8570 compliance with Information More ❯
STAR 2281 TBD - No LCAT Specified Position Requires ACTIVE TS/SCI Clearance with Polygraph No Level Required Chantilly The maximum number of FTEs is 0.5 (either .5 for a 1-year period or 1.0 for a 6-month period More ❯
for a security clearance Desired: • Advanced Experience configuring, deploying, and supporting network systems (E.g. Cisco, Cisco Nexus, Cisco ASA, Brocade) • Experience Troubleshooting Layer 2 and Layer 3 • Experience with Firewall Implementation and knowledge • Scripting in Python (preferred); Bash, Shell • Experience integrating with identity management, access management, and authorization solutions (PKI, LDAP). • Experience with Agile Development Methodologies More ❯
Proficiency in PC software like Microsoft WIN 10/11, Microsoft 365, Windows Server, AD administration, Virtualization, Cloud(AWS, Azure), Office/Mailer, Switch/Router/IPT, and Firewall products. Excellent written and verbal communication skill in English. Japanese is nice to have. Ability to investigate and source answers to various email and telephony enquiries about technical issues. We More ❯
testing methodologies. - Must have an understanding of the OSI Model, TCP/IP, routing protocols BGP and OSPF. - Must have network traffic analysis, diagnostic and troubleshooting skills. - Must have firewall knowledge in Juniper, Fortinet, and Palo Alto - Must have knowledge of UDP multicast, SONET, MSPP, VLANs, GRE Tunnels, and TCP/IP network designs. - Must have knowledge of multi-vendor More ❯
Complex Networks - 5 years Network Architecture - 5 years Networking experience (routers/switches/firewalls/servers) - 5 years Optimization of Distribution Networks - 5 years System Auditing, Hardening and Firewall Configurations - 5 years Troubleshoot and Resolve Complex Networking Issues - 5 years UDP Multicast and Unicast - 5 years 3rd party and subcontract staffing agencies are not eligible for partnership on this More ❯
Guildford, Surrey, England, United Kingdom Hybrid / WFH Options
4Square Recruitment Ltd
risks, and respond to incidents—all while driving continuous improvement in our systems. Key Responsibilities SIEM Management: Monitor and optimize Security Information and Event Management (SIEM) tools like Splunk. Firewall & Proxy Audits: Review configurations and coordinate changes with infrastructure teams. Incident Response: Act as part of the Cyber Security Incident Response Team (CSIRT) to address threats. Compliance: Ensure alignment with More ❯
Strong technical foundation equivalent to CCNP or JNCIP-ENT level Solid experience troubleshooting Layer 2/3 protocols, OSPF and BGP Hands-on experience with at least one enterprise firewall: Palo Alto , Fortigate , or Cisco ASA Proven ability to perform root cause analysis and resolve complex network issues Experience in a Managed Services Provider (MSP) environment Familiarity with cloud networking More ❯
City of London, London, Farringdon, United Kingdom Hybrid / WFH Options
83zero Ltd
Strong technical foundation equivalent to CCNP or JNCIP-ENT level Solid experience troubleshooting Layer 2/3 protocols, OSPF and BGP Hands-on experience with at least one enterprise firewall: Palo Alto , Fortigate , or Cisco ASA Proven ability to perform root cause analysis and resolve complex network issues Experience in a Managed Services Provider (MSP) environment Familiarity with cloud networking More ❯
Desktop OS Active Directory and Group Policy Microsoft 365 administration and SharePoint Online Core networking (DNS, routing, switching) Fibre installation and troubleshooting POS and AV/conferencing system installation Firewall configuration (Meraki/Draytek/Sophos) VoIP systems (preferably Gamma) Apple device support Full UK driving licence and the legal right to work in the UK Flexibility and willingness to More ❯
