Infrastructure Consultant - Windows/Linux, Network & Security

Infrastructure Consultant - Windows/Linux, Network & Security

Posted 1 week ago by Capula Investment Management LLP

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Negotiable
Undetermined
Undetermined
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 System Support Technical Support Virtualisation VMware Certified Associate Vulnerability Windows Servers

Summary: We are looking for a hands-on Infrastructure Consultant with expertise in Windows/Linux server environments, networking, and security. The role involves providing advanced technical support, managing escalated issues, and contributing to infrastructure projects. The consultant will also be responsible for maintaining network infrastructure and collaborating with other teams to enhance project delivery. A strong background in systems support and security operations is essential for success in this position.

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: undetermined

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.

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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