Senior Infrastructure Engineer

Senior Infrastructure Engineer - Central London (4 days per week onsite / 1 day per week WFH) Please note: candidates MUST hold a valid CCNA £550 - £600 p/d, inside IR35 3 months initial term, highly likely to extend A leading construction engineering business is seeking an Senior Infrastructure Engineer to their team. They are a well-established business about to enter considerable operational change making it an exciting time to join and be a part of their journey. Reporting into the IT Manager, you will oversee core infrastructure and networking. You'll work closely with managed service providers to ensure seamless operations and business continuity whilst taking a lead on regular site set-ups. Key Responsibilities: * Lead and manage office and site networks, aligning with business strategy * Act as an escalation point for the Service Desk Team * Set up and configure Local Area Networks (LANs), including hardware deployment and support * Coordinate with third-party MSPs for network and infrastructure management * Manage firewall operations and connectivity with ISPs * Oversee network IP addressing and VPN setups * Support business continuity through proactive incident management * Rapid deployment of site connectivity solutions, including 4G routers * Monitor network health and performance, ensuring high availability and resilience * Maintain inventory and configuration records for infrastructure and software * Collaborate with the Security Operations Centre (SOC) on network security * Support software licensing and upgrades * Support data privacy and security audits * Provide technical support and mentoring * Maintain server rooms and ensure operational efficiency * Develop and implement business processes and documentation Requirements: * Strong knowledge of Azure infrastructure management * Strong in network protocols (TCP/IP, DHCP, DNS, etc.) * Experience with FortiGate Firewalls and Windows Operating Systems * Familiarity with WAN, LAN, VPN, and wireless networks * Possess excellent communication skills with a proactive and self-motivated approach