Software Engineer - Network Modelling & Optimisation

In this role, you will help modernise BT Group's network modelling capabilities by building a cloud-based platform that makes modelling tools accessible across the organisation. You will contribute to shifting from desktop tools to scalable web apps and cloud infrastructure, enabling faster decisions on national-scale infrastructure. You will work with cross-functional teams to deliver secure, reliable software that supports evolving modelling and optimisation use cases. The opportunity combines software engineering with a tangible, real-world impact.

• 10% on target annual bonus
• Online private GP 24/7 for you and family
• Market-leading paid carers leave (up to 2 weeks)
• Maternity, paternity and adoption leave – 18 weeks full pay, 8 weeks half pay
• Discounts on EE and BT products
• Pension scheme – 5% employee, 10% employer

• Design and build a web-based application to host network modelling and optimisation tools
• Transform desktop tools into scalable, cloud-hosted solutions used across Fixed Networks
• Set up and maintain cloud infrastructure including VMs, databases and secure environments
• Develop APIs, data pipelines and integrations to consolidate data sources
• Embed secure-by-design principles, including IAM and single sign-on
• Improve code quality, automation and deployment pipelines for reliable, scalable delivery
• Enhance and evolve existing modelling tools during migration and future platform evolution
• Contribute to future network modelling, simulations and optimisation work as the platform evolves

• Python and JavaScript experience (React, NextJS, TypeScript)
• Strong understanding of modern software engineering practices (CI/CD, automation, version control, testing)
• Experience with on-prem or private cloud environments and virtual machines
• Experience with Linux-based environments and system-level troubleshooting
• Ability to design and work with SQL databases and schema design
• Awareness of security best practices including IAM and secure development

• Python
• JavaScript
• React
• NextJS
• TypeScript
• CI/CD