Network Engineering Specialist

Job Description Network Engineering Specialist Req

Start Date:

19/05/2026

Job Function:
Engineering Division:
Networks

Job Location:

G  Ipswich - Gemini Buildings Advertised Salary:
Competitive with great benefits

Recruiter:
Luke Byrne Career Grade: DInternal Closing Date: 2nd June 2026

About the role

Our internal Networks unit is responsible for designing, building and running the networks and technology platforms that BT, and our customers, rely on.

Across our fibre, mobile, WiFi and core networks, BT is a connectivity powerhouse, leading the world in the adoption of converged, automated, programmable network technologies. Bringing together network strategy, transformation, and the modernisation of our mobile and fixed network assets - along with direct partnering with Enterprise, Global and Consumer on leading edge, converged services and experiences – our Networks division designs, builds and runs the technology platforms that BT, and our customers, rely upon every  Networks, we play our part, every day, to make this true.

We are responsible for the heart of BT, making sure our networks stay reliable, resilient, secure, and ahead of changing demands.

Our networks – both fixed and mobile – play an essential role in our 30 million customers’ lives, their businesses, and the economies of the 180 countries we operate in. We’ve built a team of the world’s best communications technology experts. Our engineers have achieved extraordinary things: constantly upgrading and reimagining the network to stay ahead of the game, innovating using the latest network cloud, AI, virtualisation and advanced optical tech to build and maintain our world class global infrastructure.

Every year, we file more than 100 new inventions to keep BT, our customers and the UK at the cutting edge.

Thanks to our investments, we were able to satisfy peak demand in our core network of 22.7 Tb/s in 2020, a 30% increase over the same period in  the past year, average download speeds on our broadband network increased by more than 15% despite this huge increase in demand for  the UK, 96 % of people can now receive superfast broadband at more than 30

Mbps.

On mobile we’ve seen a 36% increase in data usage over the last 12 months, with highest recorded peak on 18th March – a throughput peak of 802

Gb/s for Europa League football.

Every day, we work to give BT customers the fastest, best connected networks there are, supporting truly world class solutions and services. Put simply, we make the network... work

The Gemini Environment Specialist is responsible for the end‑to‑end management and evolution of the power, cooling and environmental estate that underpins Gemini Evolution’s test facilities. The role provides technical leadership across environment management, operational resilience and engineering best practice, ensuring environments are safe, energy‑efficient and capable of supporting future innovation.

With a strong understanding of BT’s environmental standards and obligations, the Environment Specialist ensures Gemini’s non‑live environments are reliable, sustainable and cost‑effective. By embedding best practice in power and cooling performance, driving continuous improvement and supporting estate rationalisation, the role strengthens the engineering foundations that enable a more efficient and sustainable Gemini environmental estate.

What you’ll be doing

Act as the technical authority for all power, cooling & environmental infrastructure within Gem Evo control, providing expert direction on design, operational capability and in-life best practice

Works with the Environment Architect to provide support and input into Gemini’s Environment and Model Strategy ensuring all power and cooling opportunities are understood and shared.

Own the co-ordination of power distribution, resilience and energy‑efficiency across model environments, ensuring solutions support long‑term platform and service‑team needs.

Act as the escalation lead for environmental incidents, directing fault isolation, recovery activity, root‑cause analysis, and engineering remediation plans.

Provides environment consultancy for teams looking to transition models/labs into Gemini…