51 to 75 of 77 DNS Jobs in the City of London

Software support - installation & deployment. IP Telephone support. Antivirus & Anti-Spam support. Network Printer support. Basic Networking - Network Connectivity, Domian Controllers, Internet Access, Email, etc. Basic Networking - TCP/IP, DNS, VLAN, VPN, SSL & IPSec, Switches, Routers, Wi-Fi Aps. Basic Understanding - issues involved in administering & maintaining, LAN & Wireless Network, Firewalls etc. Good organizational skills, combined with a proactive approach. Excellent More ❯

. A solid grasp of cloud security best practices and tools, including IAM, firewalls, and encryption. Experience managing hybrid and multi-cloud networking (TCP/IP, subnets, load balancing, DNS). A track record of leading small technical teams, providing guidance and mentorship. Experience in site reliability engineering (SRE) or IT operations, including incident response and troubleshooting. Strong problem-solving More ❯

. A solid grasp of cloud security best practices and tools, including IAM, firewalls, and encryption. Experience managing hybrid and multi-cloud networking (TCP/IP, subnets, load balancing, DNS). A track record of leading small technical teams, providing guidance and mentorship. Experience in site reliability engineering (SRE) or IT operations, including incident response and troubleshooting. Strong problem-solving More ❯

infrastructure or 3rd-line engineering role. • Experience working within a Managed Service Provider (MSP) or multi-client environment. • Proven expertise in the Microsoft tech stack: Windows Server, Active Directory, DNS, DHCP, GPOs, WDS, Azure AD, Azure Virtual Machines, and Azure Storage • Strong understanding of networking and security principles: VLANs, VPNs, subnetting, firewalls (Fortinet, WatchGuard, Palo Alto, or similar) • Experience with … processed for this vacancy only. KEY SKILLS – Senior Infrastructure Engineer, MSP, 3rd Line, Windows Server, Azure AD, VMware, Hyper-V, Veeam, Fortinet, WatchGuard, Palo Alto, Networking, VPNs, VLANs, DHCP, DNS, Infrastructure Projects, Cloud Solutions, IT Architecture More ❯

Microsoft Exchange Online and Exchange Server 2016/2019/SE , including configuration, administration, troubleshooting, and version upgrades. Practical experience managing email security and continuity platforms Working knowledge of DNS, SPF, DKIM, and DMARC configuration and management, ideally using tools such as Valimail . Strong understanding of Intune for BYOD and corporate device management , Demonstrated ability to identify, design, and More ❯

Microsoft Exchange Online and Exchange Server 2016/2019/SE , including configuration, administration, troubleshooting, and version upgrades. Practical experience managing email security and continuity platforms Working knowledge of DNS, SPF, DKIM, and DMARC configuration and management, ideally using tools such as Valimail . Strong understanding of Intune for BYOD and corporate device management , Demonstrated ability to identify, design, and More ❯

Install and configure Dell Blade and Rackmount server hardware, including firmware updates, BIOS configurations, and hardware lifecycle management. Roll out, maintain, and troubleshoot Microsoft Active Directory, including Group Policy, DNS, DHCP, and replication. Deploy and manage Microsoft Certificate Services (PKI infrastructure) — handling certificate lifecycle management, issuance, and renewal. Implement Microsoft Exchange Server (on-premise) and Exchange Online in a hybrid … depth expertise with VMware vSphere 7.x and VMware Site Recovery Manager (SRM). Strong understanding of Dell Blade and Rackmount server hardware. Skilled in Microsoft Active Directory, Group Policy, DNS, and DHCP administration. Experience managing Microsoft Certificate Services (PKI infrastructure). Hands-on experience with Microsoft Exchange Server (on-premises) and Exchange Online/Office 365 hybrid environments. Strong working More ❯

many hats to achieve the impact of a much larger one) Preferred Qualifications: (Bonus Points) Experience or familiarity with the CyberSecurity industry. Understanding of common OS, Browser, OSI Stack, DNS, Domain Registration, TCP/IP and networking technologies. Good understanding of various firewall and web proxy technologies. Working knowledge of SIEM/TIP/SOAR platforms. Familiarity with JSON/ More ❯

many hats to achieve the impact of a much larger one) Preferred Qualifications: (Bonus Points) Experience or familiarity with the CyberSecurity industry. Understanding of common OS, Browser, OSI Stack, DNS, Domain Registration, TCP/IP and networking technologies. Good understanding of various firewall and web proxy technologies. Working knowledge of SIEM/TIP/SOAR platforms. Familiarity with JSON/ More ❯

languages such as Python, C++, or assembly for developing analysis tools and scripts. Expertise in creating and maintaining YARA rules. Strong understanding of networking protocols, including TCP/IP, DNS, and how malware utilises these protocols. Ways of working Focusing on Clients and Customers. Working as One NCC. Always Learning. Being Inclusive and Respectful. Delivering Brilliantly. Our company At NCC More ❯

uptime-focused projects across networking, cloud and security Drive hardening, compliance and platform security standards Improve performance across identity, access and connectivity Design and manage Azure services: VNETs, RBAC, DNS, VPN, firewalls Own platform documentation and operational best practice Troubleshoot complex incidents and enable engineering teams Required Experience 5+ years in infrastructure engineering or systems engineering Strong Microsoft environment expertise … Windows Server, AD/Entra ID, Group Policy, O365, Intune Solid networking foundations: TCP/IP, VLANs, DNS, VPNs, Wi-Fi Security engineering knowledge: System hardening, endpoint security, SIEM, incident handling ISO27001, GDPR or PCI compliance exposure Certificates (SSL/TLS), WAF/DDoS, email security Azure engineering background: Governance, networking, identity and security configuration Ownership mindset and strong troubleshooting More ❯

uptime-focused projects across networking, cloud and security Drive hardening, compliance and platform security standards Improve performance across identity, access and connectivity Design and manage Azure services: VNETs, RBAC, DNS, VPN, firewalls Own platform documentation and operational best practice Troubleshoot complex incidents and enable engineering teams Required Experience 5+ years in infrastructure engineering or systems engineering Strong Microsoft environment expertise … Windows Server, AD/Entra ID, Group Policy, O365, Intune Solid networking foundations: TCP/IP, VLANs, DNS, VPNs, Wi-Fi Security engineering knowledge: System hardening, endpoint security, SIEM, incident handling ISO27001, GDPR or PCI compliance exposure Certificates (SSL/TLS), WAF/DDoS, email security Azure engineering background: Governance, networking, identity and security configuration Ownership mindset and strong troubleshooting More ❯

in React. This includes a deep understanding of the DOM, component design, CSS, and state management. Familiarity with Kubernetes-specific platform components and principles , such as load balancers, cluster DNS, autoscalers, API/SDK toolsets, and the operator pattern. Experience developing and containerizing microservice applications is a plus. Proficiency in integration and unit testing, with a strong commitment to code More ❯

and investigative mindset with demonstrable curiosity and attention to detail • Familiarity with common attacker techniques and MITRE ATT&CK mapping • Hands-on experience analysing logs from Defender for Identity, DNS, Windows event logs and endpoint telemetry • Comfortable navigating enterprise-scale environments and understanding host, user and application behaviours • Knowledge of threat hunting methodologies and ability to articulate detection gaps clearly More ❯

to relevant approval boards. Essential: Creating and reviewing High and Low level technical documentation, technical standards and processes. As part of the role you will need experience in. DDI (DNS DHCP IP) cleanse, config, consolidation. VLan, subnet & security zone config & migrations. Edge, distribution switch config, installation/replacements. Core switch replacement. WiFi AP config, installation/replacements. 802.1x & NAC config More ❯

to relevant approval boards. Essential: Creating and reviewing High and Low level technical documentation, technical standards and processes. As part of the role you will need experience in. DDI (DNS DHCP IP) cleanse, config, consolidation. VLan, subnet & security zone config & migrations. Edge, distribution switch config, installation/replacements. Core switch replacement. WiFi AP config, installation/replacements. 802.1x & NAC config More ❯

and containerisation workloads (VMware, Hyper-V, Kubernetes). Hybrid Cloud & Virtualisation Manage hybrid workloads between on-premises data centres and Azure . Deploy and support Azure VMs, VNets, Private DNS zones , and Defender for Cloud Arc integrations . Troubleshoot connectivity between physical servers, virtualised environments, and cloud-based services. Skills & Experience Required Core Technical Expert-level knowledge of Windows Server … administration (2016–2022) and/or Linux. Practical experience in Active Directory , DNS , DHCP , Group Policy , and PowerShell scripting . Hands-on experience with Azure Cloud services , particularly IaaS , Defender for Cloud , and Azure Arc . Security & Governance Working understanding of Microsoft Defender for Endpoint , Defender for Identity , and Azure Policy . Desirable Certifications Microsoft Certified: Windows Server Hybrid Administrator More ❯

and containerisation workloads (VMware, Hyper-V, Kubernetes). Hybrid Cloud & Virtualisation Manage hybrid workloads between on-premises data centres and Azure . Deploy and support Azure VMs, VNets, Private DNS zones , and Defender for Cloud Arc integrations . Troubleshoot connectivity between physical servers, virtualised environments, and cloud-based services. Skills & Experience Required Core Technical Expert-level knowledge of Windows Server … administration (2016–2022) and/or Linux. Practical experience in Active Directory , DNS , DHCP , Group Policy , and PowerShell scripting . Hands-on experience with Azure Cloud services , particularly IaaS , Defender for Cloud , and Azure Arc . Security & Governance Working understanding of Microsoft Defender for Endpoint , Defender for Identity , and Azure Policy . Desirable Certifications Microsoft Certified: Windows Server Hybrid Administrator More ❯

platforms: Microsoft 365, Azure, Windows Server, Entra ID (Azure AD), Intune, SharePoint, Exchange , etc. Troubleshoot a variety of technical issues including workstations, cloud services, user access, software, and networking (DNS, VPN, firewalls). Attend client sites across London for onsite support, installations, and project delivery. Provide remote helpdesk support using RMM and PSA tools on days not spent on-site. … Looking For 3+ years of experience in an MSP or fast-paced multi-client IT environment. Solid knowledge of: Microsoft 365, Azure, Windows Server, Intune, Entra ID Networking fundamentals (DNS, firewalls, VPNs, VLANs) RMM/PSA tools such as NinjaOne, ConnectWise, Datto Excellent client-facing skills with a strong focus on communication and service delivery. Self-starter with the ability More ❯

platforms: Microsoft 365, Azure, Windows Server, Entra ID (Azure AD), Intune, SharePoint, Exchange , etc. Troubleshoot a variety of technical issues including workstations, cloud services, user access, software, and networking (DNS, VPN, firewalls). Attend client sites across London for onsite support, installations, and project delivery. Provide remote helpdesk support using RMM and PSA tools on days not spent on-site. … Looking For 3+ years of experience in an MSP or fast-paced multi-client IT environment. Solid knowledge of: Microsoft 365, Azure, Windows Server, Intune, Entra ID Networking fundamentals (DNS, firewalls, VPNs, VLANs) RMM/PSA tools such as NinjaOne, ConnectWise, Datto Excellent client-facing skills with a strong focus on communication and service delivery. Self-starter with the ability More ❯

Cantor Fitzgerald’s Global Information Security team is seeking an Information Security Operations Engineer with background and knowledge of Linux systems and Cloud infrastructure. The successful candidate will need to be able to work in a fast-paced environment, planning More ❯

Cantor Fitzgerald’s Global Information Security team is seeking an Information Security Operations Engineer with background and knowledge of Linux systems and Cloud infrastructure. The successful candidate will need to be able to work in a fast-paced environment, planning More ❯

threat modelling and secure coding. Conducting security assessments, monitoring for vulnerabilities and leading remediation efforts. Operating and extending monitoring, logging and alerting systems for both performance and security. Managing DNS, CDN, caching, firewalls, load balancers and WAFs for secure web delivery. Responding to incidents and driving continuous improvement of platform security. Tech Stack: Cloud: AWS (EC2, Lambda, RDS, Route53, ELBs … OWASP frameworks, SAST/DAST tools, dependency scanning Web & Systems: LAMP stack (Varnish, Nginx, Apache), MySQL/Postgres, MongoDB Networking & Security: SSL/TLS, TCP/IP, Firewalls, WAFs, DNS, Load Balancers If youre passionate about combining DevOps with security to solve large-scale cloud challenges, this role offers the opportunity to work in a major media enterprise serving millions More ❯

threat modelling and secure coding. Conducting security assessments, monitoring for vulnerabilities and leading remediation efforts. Operating and extending monitoring, logging and alerting systems for both performance and security. Managing DNS, CDN, caching, firewalls, load balancers and WAFs for secure web delivery. Responding to incidents and driving continuous improvement of platform security. Tech Stack: Cloud: AWS (EC2, Lambda, RDS, Route53, ELBs … OWASP frameworks, SAST/DAST tools, dependency scanning Web & Systems: LAMP stack (Varnish, Nginx, Apache), MySQL/Postgres, MongoDB Networking & Security: SSL/TLS, TCP/IP, Firewalls, WAFs, DNS, Load Balancers If you’re passionate about combining DevOps with security to solve large-scale cloud challenges, this role offers the opportunity to work in a major media enterprise serving More ❯

you a versatile contributor in a fast-paced, collaborative environment supporting cutting-edge technology. Role and Responsibilities Administer, operate, and maintain enterprise network infrastructure, including LAN/WLAN, VPNs, DNS/DHCP/IPAM, firewalls, and cloud networking (AWS, GCP). Proactively monitor and troubleshoot performance, availability, and connectivity issues, taking ownership of incident resolution end-to-end. Support systems … outside regular business hours. Skills and Experience Experience in enterprise network operations and troubleshooting. Proven ability to configure and support LAN/WLAN environments, routing/switching, VLANs, and DNS/DHCP. Knowledge of routing protocols and networking technologies such as BGP, VRRP/HSRP, TCP/UDP, LACP. Strong diagnostic skills using packet capture and other troubleshooting tools. Excellent More ❯