Senior Infrastructure Delivery Engineer - MSSP

Southampton Hybrid 3 4 days in the office

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Were a fast-growing Managed Services and Security Provider delivering connectivity, networks, Microsoft cloud, and cybersecurity solutions to UK customers. As we expand our managed network and security services, were looking for a Senior Infrastructure Delivery Engineer who takes pride in high-quality delivery and lives our values.
Our values Be Fast. Stay Curious. Get It Done. Always Growing. Go Further. define how we work, how we solve problems, and how we support our customers.
The role
This is a senior, hands-on engineering role focused primarily on customer solution delivery , with additional responsibility for third-line escalations across our core network and infrastructure . Youll design, build, and secure complex network environments, moving quickly while maintaining accuracy and quality.
What youll do
Get It Done: Deliver Fortinet- and Cisco-based network and security solutions for customers
Be Fast: Drive efficient, high-quality implementations across LAN, wireless, firewall, VPN, SD-WAN, and MPLS environments
Act as a senior escalation point during complex delivery or incident scenarios
Contribute to planning, documentation, and clean handover into support
Support core network maintenance, upgrades, and improvements
Go Further: Mentor junior engineers and raise delivery standards across the team
About you
7+ years experience in a service provider / MSP / MSSP environment
Strong Fortinet expertise (NSE7 essential) with hands-on firewall, LAN, and wireless delivery experience
Solid Cisco routing knowledge (IOS/IOS-XE/XR, BGP, xwzovoh OSPF, MPLS)
Confident designing and implementing secure, scalable networks
Stay Curious: Interested in automation, tooling, and improving how services are delivered
Customer-focused, communicative, and comfortable owning outcomes
Why join us
Always Growing: Ongoing training and certification support (Fortinet, Cisco, automation)
Exposure to modern network, security, and automation technologies
Hybrid working (office/home split)
A technically strong, delivery-focused culture where ownership and improvement are expected