What you’ll do
We are seeking an IT Network Manager to join our team based from our Head Office in London Bridge (hybrid working). You will provide inspirational leadership to your network team responsible for keeping southeastern’s mission‑critical network running smoothly across over 200 sites in the South East — including stations, depots, offices, and data centres. Our train operations depend on this network, so reliability and performance are key. As we finalise our transition from a legacy setup to a modern Fortinet SD‑WAN infrastructure, you’ll play a vital role in shaping the future of our connectivity. Supporting the Head of IT, you will be accountable for the performance and security of the organisation’s network and work with our network circuit providers and core switch support partners to ensure network uptime is maximised whilst ensuring the integrity, security and performance of the network traffic is maintained. You will also lead on ad‑hoc business projects as our network SME and play a vital role in IT governance.
The Experience You’ll Need
* SD‑WAN experience – ideally Fortinet/Fortigate (critical requirement).
* Strong understanding of networking fundamentals and implementations.
* Knowledge of network security principles and securing networks against threats.
* Familiarity with traffic management, performance monitoring, and automation.
* Awareness of external threats and ability to keep the network resilient.
* Focus on continual improvement and leveraging full capability of existing kit.
* Ability to lead, coach, and develop a team.
* Ability to balance large workloads and prioritise effectively.
* Able to communicate clearly and manage stakeholder expectations.
* Calm under pressure – can drop everything in a crisis and be hands on.
Other Things To Know
* This vacancy may close early if we receive a large number of applications. So, make sure you get yours in early.
* All offers of employment are subject to satisfactory references, a right to work verification, a basic criminal record check, and a pre‑employment medical assessment. Work visa sponsorship isn’t available for this role.
* If you applied but weren’t successful in getting a similar role at southeastern, please wait six months before applying again.
What You’ll Get In Return
* a final salary pension.
* 25 days annual leave allowance (plus bank holidays).
* free rail travel across our networks.
A Bit About southeastern
We’re one of Britain’s busiest train operators, serving London, Kent and parts of East Sussex. We run over 1,700 trains a day, carrying more than 500,000 passengers and serving 180 stations. However, working on our railway is more than getting passengers from A to B. It’s about all the little moments that make a difference to their journey. It’s also about making our railway a great place to work. With a team that represents the communities we serve. This is a journey we’re fully committed to and we’re proud to have been named a ‘Great Place to Work’ at the 2023 National Rail Awards and endorsed as a WORK180 Employer for Women.
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