Job Title: Infrastructure Consultant – Windows/Linux, Network & Security
Location: London
Contract Term: 6 months (with potential extension)

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.

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.