london (city of london), south east england, united kingdom
Mondrian Alpha
My client, a leading multi-strategy hedge fund, is seeking an mid level (3-10 years of exp) Infrastructure Engineer to join their high-performing team. This individual will help support and evolve the firm’s multi-cloud technology estate More ❯
Central London, London, United Kingdom Hybrid / WFH Options
4C Resourcing
site Requirement:Tuesdays plus additional days as needed. Key Responsibilities VLAN, subnet, and security zone migrations Switch and WiFi configuration, installation, and replacement 802.1x and NAC deployment DDI (DNS, DHCP, IP) cleansing and consolidation Firewall and Citrix Netscaler upgrades (including Panorama and MFA) Monitoring and alerting setup Technical documentation for approval boards Essential Skills 5+ years in senior network roles More ❯
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 & deployment. More ❯
test scripts; perform detailed data analysis. Produce clear technical reports and communicate results effectively to internal teams and stakeholders. Apply strong Linux administration, networking (TCP/IP, HTTP, DNS, DHCP), and Scripting (Python/Bash/Perl) skills. Work collaboratively within a dynamic engineering team, demonstrating autonomy, precision, and adaptability. Posted Date: 08 Oct 2025 Reference: JSINTEGRATION TEST ENGINEER Employment More ❯
a customer-facing role, strong communication skills are essential. Key responsibilities: Manage, maintain and support on-premise infrastructure, including firewalls, switches, wireless networks, Windows Server roles (Active Directory, DNS, DHCP, NTFS), and virtualisation platforms (ESXi, Hyper-V). Administer and support backup and disaster recovery solutions, primarily using Veeam whilst leveraging the cloud for offsite solution. Deliver intermediate-level troubleshooting … networking technologies (switches, wireless networks, NPS). Expertise in virtualisation platforms, including VMware ESXi and Microsoft Hyper-V. Proficient in administering and supporting Windows Server environments (Active Directory, DNS, DHCP, NTFS). Working knowledge of Veeam for backup and disaster recovery solutions. Basic to intermediate working knowledge of SQL Intermediate to advanced server hardware knowledge (Dell, HP, SANs, clusters) Strong More ❯
teams. YOU'RE GOOD AT Architecture and Design Develop end-to-end network architectures that integrate AWS, GCP, Azure, and Cisco IOS platforms Design Core Network Protocol (DNS, NTP, DHCP) deployments with tools like Infoblox Design secure perimeter and segmentation strategies with Palo Alto Firewalls Lead SD-WAN design and deployment using VeloCloud to optimize global connectivity Implementation and Optimization … and GDPR Collaboration and Leadership Partner with cloud, security, network, and DevOps teams to deliver integrated solutions Serve as subject matter expert for cloud networking, SD-WAN, DNS/DHCP/IPAM, and firewall technologies Provide mentorship and guidance to engineers and operations teams Monitoring and Troubleshooting Establish proactive monitoring and alerting systems across cloud and on-prem networks Lead … measures What You'll Bring The ideal candidate will demonstrate appropriate experience in the following: Networking Protocols and Platforms Strong Knowledge of TCP/IP, BGP, OSPF, MPLS, DNS, DHCP, NAT, VPNs Advanced proficiency in Cisco IOS (routers, switches, firewalls) Infoblox for enterprise-grade DNS solutions VeloCloud SD-WAN deployment and optimization Cloud Networking (required AWS or GCP) AWS: Transit More ❯
rollouts) Support and evolve infrastructure design, ensuring best practices are followed Collaborate with cybersecurity, network, storage, and application teams on cross-domain initiatives Implement or maintain Active Directory, DNS, DHCP, Group Policy, DFSR, WDS, etc. Automate deployment, configuration, and infrastructure provisioning (Infrastructure as Code) Work with virtualisation (VMware/vSphere, etc.) Configure/manage SAN/storage, Fibre Channel, zoning … current or active within the last 12 months (non-negotiable) Strong track record with Windows 11 deployment (imaging, upgrade, Autopilot, Intune, SCCM, etc.) Solid experience with Active Directory, DNS, DHCP, Group Policy Experience in a 3rd line/senior infrastructure role Familiarity with both BAU support and project-based change Virtualisation experience (VMware, vSphere) Working knowledge of SAN/storage More ❯
rollouts) Support and evolve infrastructure design, ensuring best practices are followed Collaborate with cybersecurity, network, storage, and application teams on cross-domain initiatives Implement or maintain Active Directory, DNS, DHCP, Group Policy, DFSR, WDS, etc. Automate deployment, configuration, and infrastructure provisioning (Infrastructure as Code) Work with virtualisation (VMware/vSphere, etc.) Configure/manage SAN/storage, Fibre Channel, zoning … current or active within the last 12 months (non-negotiable) Strong track record with Windows?11 deployment (imaging, upgrade, Autopilot, Intune, SCCM, etc.) Solid experience with Active Directory, DNS, DHCP, Group Policy Experience in a 3rd line/senior infrastructure role Familiarity with both BAU support and project-based change Virtualisation experience (VMware, vSphere) Working knowledge of SAN/storage More ❯
rollouts) Support and evolve infrastructure design, ensuring best practices are followed Collaborate with cybersecurity, network, storage, and application teams on cross-domain initiatives Implement or maintain Active Directory, DNS, DHCP, Group Policy, DFSR, WDS, etc. Automate deployment, configuration, and infrastructure provisioning (Infrastructure as Code) Work with virtualisation (VMware/vSphere, etc.) Configure/manage SAN/storage, Fibre Channel, zoning … current or active within the last 12 months (non-negotiable) Strong track record with Windows 11 deployment (imaging, upgrade, Autopilot, Intune, SCCM, etc.) Solid experience with Active Directory, DNS, DHCP, Group Policy Experience in a 3rd line/senior infrastructure role Familiarity with both BAU support and project-based change Virtualisation experience (VMware, vSphere) Working knowledge of SAN/storage More ❯
London, South East, England, United Kingdom Hybrid / WFH Options
Proactive Appointments
managing the firm’s hybrid identity environment, ensuring secure, efficient, and scalable access to critical enterprise systems. If you’re a specialist in Active Directory, Entra ID, DNS/DHCP/IPAM, and IAM strategy, this is an opportunity to lead impactful initiatives within a highly regulated, enterprise-scale financial services environment. The Role As Senior IAM Engineer, you will … complex hybrid environment What We’re Looking For 10+ years’ experience in enterprise-scale IAM and directory services engineering Deep technical expertise in Active Directory, Entra ID, DNS/DHCP/IPAM (Infoblox experience highly desirable) Strong knowledge of PKI, certificates, authentication flows, access automation, and compliance requirements Advanced PowerShell scripting and automation skills Experience with IAM governance tools (SailPoint More ❯
