Infrastructure Consultant - Windows/Linux, Network & Security

Infrastructure Consultant - Windows/Linux, Network & Security

Posted 3 days ago by Capula Investment Management LLP

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Negotiable
Undetermined
Onsite
London, England, United Kingdom
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Automation Bash (Scripting Language) CentOS Domain Name System (DNS) Servers Dynamic Host Configuration Protocol (DHCP) File Servers Financial Services Hardening Linux Microsoft Windows Network Infrastructure Oracle Linux Performance Tuning Scripting Technical Support Virtualisation VMware Certified Associate Vulnerability Windows Servers

Summary: The Infrastructure Consultant role focuses on providing hands-on support for server, network, and security systems, primarily in a Windows/Linux environment. The consultant will manage escalated technical issues and contribute to infrastructure projects while being required to work on-site five days a week. The position demands strong technical expertise and the ability to handle multiple priorities in a fast-paced environment. Candidates should have a minimum of five years of relevant experience and excellent communication skills.

Key Responsibilities:

  • Provide advanced technical support and resolution for server, networking, and security-related incidents and service requests
  • Manage and troubleshoot issues across Windows Server (2016/2019/2022) and Linux environments (primarily Red Hat/CentOS)
  • Respond to and resolve 2nd/3rd tier user escalations across desktop, server, and network domains
  • Support and maintain network infrastructure including firewalls, switches, VPNs, and wireless systems (primarily Cisco-based)
  • Conduct regular patching, hardening, and performance tuning of infrastructure systems
  • Assist with security operations, including endpoint protection, vulnerability remediation, and log analysis
  • Collaborate with other infrastructure and security teams to support project delivery and BAU enhancements
  • Create and maintain detailed infrastructure documentation and SOPs
  • Participate in an on-call rotation for critical support outside business hours

Key Skills:

  • Minimum 5 years of experience in systems and infrastructure support roles
  • Strong experience with both Windows Server and Linux (Red Hat, CentOS)
  • Solid understanding of networking concepts (TCP/IP, VLANs, VPNs, DNS, DHCP) and hands-on experience with Cisco technologies
  • Experience in implementing or supporting infrastructure security controls, including patching, endpoint protection, and identity/access management
  • Familiarity with virtualization technologies (VMware) and enterprise storage solutions (SAN/NAS)
  • Exposure to scripting (PowerShell, Bash) and automation tools is a plus
  • Prior experience in financial services or other regulated industries is preferred
  • Strong troubleshooting and analytical skills
  • Ability to manage multiple priorities in a fast-paced environment
  • Excellent communication skills; able to work effectively with users and technical teams
  • Self-driven, with the ability to take ownership of problems and see them through to resolution

Salary (Rate): undetermined

City: London

Country: United Kingdom

Working Arrangements: on-site

IR35 Status: undetermined

Seniority Level: undetermined

Industry: IT

Detailed Description From Employer:

Job Title: Infrastructure Consultant - Windows/Linux, Network & Security

Location: London

Contract Term: 6 months (with potential extension)

Role Summary

We are seeking a hands-on Infrastructure Consultant with strong expertise in server (Windows/Linux), network, and security domains. This role is primarily focused on supporting day-to-day user requests, managing escalated (2nd/3rd tier) technical issues, and contributing to ongoing infrastructure projects. Please note that this role requires being in the office five days per week.

Key Responsibilities

  • Provide advanced technical support and resolution for server, networking, and security-related incidents and service requests
  • Manage and troubleshoot issues across Windows Server (2016/2019/2022) and Linux environments (primarily Red Hat/CentOS)
  • Respond to and resolve 2nd/3rd tier user escalations across desktop, server, and network domains
  • Support and maintain network infrastructure including firewalls, switches, VPNs, and wireless systems (primarily Cisco-based)
  • Conduct regular patching, hardening, and performance tuning of infrastructure systems
  • Assist with security operations, including endpoint protection, vulnerability remediation, and log analysis
  • Collaborate with other infrastructure and security teams to support project delivery and BAU enhancements
  • Create and maintain detailed infrastructure documentation and SOPs
  • Participate in an on-call rotation for critical support outside business hours

Requirements

Qualifications & Experience

Minimum 5 years of experience in systems and infrastructure support roles

Strong experience with both Windows Server and Linux (Red Hat, CentOS)

Solid understanding of networking concepts (TCP/IP, VLANs, VPNs, DNS, DHCP) and hands-on experience with Cisco technologies

Experience in implementing or supporting infrastructure security controls, including patching, endpoint protection, and identity/access management

Familiarity with virtualization technologies (VMware) and enterprise storage solutions (SAN/NAS)

Exposure to scripting (PowerShell, Bash) and automation tools is a plus

Prior experience in financial services or other regulated industries is preferred

Soft Skills

Strong troubleshooting and analytical skills

Ability to manage multiple priorities in a fast-paced environment

Excellent communication skills; able to work effectively with users and technical teams

Self-driven, with the ability to take ownership of problems and see them through to resolution

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