Engineer network modelling Work, Jobs in Colchester, Ess (with Salaries)

Software Engineer - Network Modelling & Optimisation
BT —Ipswich
- Hybrid work
- SQL
- JavaScript
- APIs
- Gym membership

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Software Engineer - Network Modelling & Optimisation

BT -
Ipswich

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Job details

Benefits

Company pension
Gym membership

Qualifications

Cloud infrastructure
React
Kubernetes
Ansible
SQL
Docker
JavaScript
Terraform
APIs
TypeScript
Python

Full job description

Req ID: 59394

Job Function: Software Engineering

Posting Start Date: 21/07/2026

Posting End Date: 29/07/2026

Division: Networks

Job Location: GBR Ipswich - Orion Building

Advertised Salary: Competitive, with great BT benefits.

Flexible 3 days a week together out of our Ipswich site (flexible 2 days remote wherever).

About the role

This role sits at the heart of how we plan and evolve the UK’s core network – the infrastructure that keeps people, businesses and critical services connected every day.

Today, powerful modelling and optimisation tools help shape decisions across our network, but they’re largely accessed through specialist teams. We’re now transforming that approach — moving to a modern, cloud-based platform that makes these tools more accessible, scalable and impactful across the wider organisation.

As a Software Engineering Specialist, you’ll play a key role in that transformation. You’ll help modernise how network modelling is delivered, enabling teams to move faster, make better decisions, and focus on higher-value, forward-looking work.

This is an opportunity to combine software engineering with real-world impact — contributing to decisions that shape national-scale infrastructure.

What you’ll be doing

Designing and building a web-based application that brings network modelling and optimisation tools into a modern, accessible platform
Transforming existing desktop-based tools into scalable, cloud-hosted solutions used across Fixed Networks
Setting up and maintaining cloud infrastructure, including virtual machines, databases and secure environments
Developing APIs, data pipelines and integrations to bring together multiple data sources into a single modelling environment
Embedding secure-by-design principles, including identity access management and single sign-on for sensitive data
Improving code quality, automation and deployment pipelines to support reliable, scalable delivery
Enhancing and evolving existing modelling tools as they are migrated — enabling richer capability, improved performance and new use cases
Contributing to future network modelling, simulations and optimisation work as the platform evolves

Essential Skills / Experience

Experience building software using Python and JavaScript (e.g. React, NextJS, TypeScript).
Experience working with on-prem or private cloud environments, including hosting applications across virtual machines and internal platforms (rather than purely public cloud)
Demonstratable commercial background of security best practices, including identity and access management and secure application development
Infrastructure as Code (e.g. Terraform, Ansible).

Desirable Skills / Experience

Experience building or consuming APIs.
Knowledge of containerisation (e.g. Docker, Kubernetes).
Ability to design and work with databases (e.g. SQL, schema design)
Strong understanding of modern software engineering practices (e.g. CI/CD, automation, version control, testing)
Interest in algorithms, optimisation, or modelling problems.
Experience modernising or migrating legacy systems to cloud-based architectures.

Our Package

Tailored benefits make a real difference. That’s why we offer a comprehensive range to support your growth, wellbeing, and everyday life. You can design the package to suit you and your lifestyle. Your core benefits include:

10% on target annual bonus
Access to an online private GP 24/7 for you and your immediate family
Market-leading paid carers leave with up to 2 weeks off
Equalised maternity, paternity, and adoption leave – 18 weeks’ full pay and 8 weeks’ half pay
Discounted EE and BT products, including mobile and broadband
Market leading Pension scheme – 5% from you and 10% from us
Holiday purchase scheme

You can select additional benefits, including healthcare, dental, gym memberships and more when you’re ready.

BT Group is the UK’s leading communications group and the holding company behind some of the country’s most recognised brands – including BT, EE, Openreach and Plusnet. Our purpose is as simple as it is ambitious: we connect for good. Our customers include consumers, small, medium and large businesses, public sector organisations and other communications providers.

BT Group’s role is about setting direction, unlocking value and creating the conditions for our brands and businesses to thrive.

Having come through the most capital-intensive phase of our fibre investment, our focus now is on what comes next – simplifying how we operate, using technology and AI to work smarter, and organising ourselves to serve customers better and grow sustainably. Group teams shape strategy, policy, brand, capital allocation and transformation, helping the whole organisation perform at its best.

We have a singular culture that unites all our people: we are customer-first challengers, who are committed, clear and connected. These behaviours unite us as one team to deliver for our colleagues, our customers, our stakeholders and the country. Joining BT Group means working at the heart of a business that matters to the UK, with the opportunity to shape decisions, influence outcomes and help set the future course of one of the country’s most important companies.

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Software Engineer - Network Modelling & Optimisation

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