IT Network Engineer

London & Southeastern Railway; Greater London; On-site; GBP 80,000 - 100,000; Full time

Job summary

A leading train operator in Greater London is seeking a dedicated Network Engineer to maintain and enhance their network infrastructure. You will be pivotal in transitioning to a modern Fortinet SD-WAN setup, ensuring high performance across multiple sites. Ideal candidates should possess robust experience with Fortinet technologies and relevant network certifications. Enjoy a range of benefits including a final salary pension and free rail travel as part of your compensation.

Benefits

Final salary pension

25 days annual leave plus bank holidays

Free rail travel across networks

Qualifications

• Demonstrated experience in Fortinet SD‑WAN operations.
• Ability to manage collaborative partnerships with service providers and suppliers.
• Hands-on experience in network operations center environments.

Responsibilities

• Maintain the network infrastructure for optimal performance.
• Work closely with network partners to maximize uptime.
• Lead IT projects to ensure network requirements are fulfilled.
• Drive service improvements through innovative solutions.

Skills

Experience of operating, maintaining and implementing Fortinet SD‑WAN

CCNA Enterprise

CCNP (R+S/Wireless) / Security accreditation

Experience working with service providers

Experience working with suppliers

NOC experience

Job description

Are you looking for a career where your expertise keeps one of the UK’s busiest rail networks connected, secure, and moving every day?

Can you move people? Apply now.

What you’ll do

You will join a small, dedicated team responsible for keeping SE’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 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. This is your chance to be part of a major transformation journey.

Your responsibilities will include:

• Maintaining and improving SE’s network infrastructure to ensure high availability, integrity, and optimal performance.
• Working closely with network delivery and support partners to maximise uptime and proactively resolve issues.
• Leading and supporting IT projects, ensuring network requirements are met, capacity is planned, and services are successfully introduced.
• Driving continuous service improvements by applying best practices and innovative solutions to enhance network reliability and security.

The experience you’ll need

To be considered for this role we recommend you demonstrate the below in your application;

• Experience of operating, maintaining and implementing Fortinet SD‑WAN(essential)
• CCNA Enterprise <> CCNP (R+S/Wireless) / Security accreditation or equivalent (essential)
• Experience working with service providers (essential)
• Experience working with suppliers (essential)
• NOC experience – with desire to be more hands on/project based

As proud members of the ArmedForces Covenant and Disability Confident Scheme, we will offer you an interview if you apply under these schemes and meet the minimum criteria for the role. Find out more here.

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 SE, please wait six months before applying again.

Find out more about our recruitment process and get tips to help you apply.

What you’ll get in return

Along with your salary, the rewards you’ll get include:

• a final salary pension
• 25 days annual leave allowance (plus bank holidays)
• free rail travel across our networks.

Meaning you can finally secure in your career as well as fulfilled by your work. Click here to see our full range of amazing benefits.

A bit about SE

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.

Our ways of working are what we expect of everyone at SE. They are powerful. Tiny moments, every day, from every one of us, add up to massive, positive change. Improving how it feels to work here and how it feels to travel with us.

At the heart of everything we do, our Safeguarding Team works to keep our customers, colleagues, and the public safe by improving safeguarding measures and knowledge making sure everyone gets home safe, every day.

Learn more about our railway