Networks Cost Modelling and Analytics Specialist

BT Group; Birmingham; Hybrid; GBP 75,000 - 110,000; Full time

Benefits offered by this job

Bonus program

Private GP

Carers leave

Pension scheme

Holiday purchase

BT product discounts

Job summary

BT Group in Birmingham is recruiting a Network Cost Modelling Specialist to design and maintain cost models across BT's fixed, mobile and core networks, enabling informed commercial and investment decisions. You will translate complex architectures into modelling frameworks and collaborate with engineers and finance to drive cost insights.

You will also drive automation to improve accuracy and efficiency in cost allocation, working in a hybrid setup with three days in the Birmingham office and

Qualifications

• Proven experience building cost models for large networks.
• Experience translating network architectures into modelling frameworks.
• Strong analytical and stakeholder communication skills.

Responsibilities

• Develop, maintain and enhance cost models for commercial and regulatory decisions.
• Translate network topology and traffic flows into cost causality.
• Collaborate with engineers, finance and SMEs to define requirements.
• Automate recurring reporting and modelling processes.

Skills

Cost modelling

Data analysis

Python

SQL

Excel/VBA

R

Tools

Python

SQL

Excel VBA

R

Job description

Req ID: 63171Job Function: Data & AIPosting Start Date: 02/10/2026Posting End Date: 10/10/2026Division: NetworksJob Location: GBR-Birmingham-Three SnowhillAdvertised Salary: Competitive, with great BT benefits!Hybrid 3 days a week together out of our Birmingham Snow Hill offices (flexible 2 days remote wherever).About the roleJoin a team that helps shape how one of the UK's largest networks invests, grows and delivers value.As a Network Cost Modelling Specialist, you'll combine network knowledge, commercial insight and analytical expertise to influence major business decisions. You'll develop and maintain cost models that provide a clear understanding of how costs are incurred and allocated across BT's products, services and network infrastructure.This is a role for someone who enjoys solving complex problems, challenging assumptions and translating technical concepts into meaningful business outcomes. You'll work closely with engineers, architects, finance teams and senior stakeholders, building a deep understanding of how BT's fixed, mobile and core networks operate and how costs flow through them.A key part of the role will be translating complex network architectures into robust cost modelling frameworks. You'll develop models that reflect network topology, traffic flows and underlying cost drivers, enabling the business to make informed commercial, investment and strategic decisions.Whether you're enhancing existing models, developing new capabilities or supporting major business decisions, your work will provide the insight that underpins how BT understands, manages and allocates network costs.What you’ll be doingDeveloping, maintaining and enhancing cost models that support commercial, regulatory and strategic decision-making.Translating complex network architectures into cost modelling frameworks that accurately reflect network topology, traffic flows and cost causality.Refactoring and improving existing modelling solutions to increase accuracy, efficiency and scalability.Gathering requirements from stakeholders and translating business needs into analytical and modelling solutions.Working closely with network engineers, architects, finance teams and subject matter experts to understand network costs and cost drivers.Analysing large and complex datasets to identify trends, opportunities, risks and insights.Automating recurring modelling and reporting processes where appropriate.Applying collaborative development practices, including version control, testing and continuous improvement methodologies.Presenting findings, recommendations and modelling outcomes to technical and non-technical stakeholders.Supporting the ongoing evolution of modelling methodologies, tools and analytical capabilities.Essential Skills / ExperienceProven experience developing, maintaining and enhancing models of complex real-world systems to generate analytical insights and support business decision-making.Successful background gathering requirements, translate business needs into analytical solutions, and communicating insights effectively to technical and non-technical stakeholder groups.Strong analytical and problem-solving skills, with the ability to understand complex technical environments and translate them into robust modelling approaches.Experience automating recurring reporting, analysis or modelling processes using Python, SQL or Excel VBA.Desirable Skills / ExperienceCommercial background of advanced Excel and Python practices, with experience working with large and complex datasets.Delivery-focused mindset with experience supporting Agile project delivery, using tools such as Jira or Trello to organise, prioritise, track and manage workflows, ensuring activity is delivered efficiently and to agreed timelines.Experience within telecommunications, network infrastructure or technology environments.Understanding of fixed, mobile and core network architectures.Experience allocating and modelling costs across products, services or technology platforms.Commercial background of network topology, traffic flows and cost causality principles.Experience applying data analysis and statistical forecasting techniques to model trends, develop projections and support decision-making, particularly where data inputs are incomplete or future outcomes require informed assumptions.Experience working within collaborative development environments using version control, testing and CI/CD practices.Experience using R.Experience influencing commercial, strategic or investment decisions through data-led recommendations.Our PackageTailored 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 bonusAccess to an online private GP 24/7 for you and your immediate familyMarket-leading paid carers leave with up to 2 weeks offEqualised maternity, paternity, and adoption leave – 18 weeks’ full pay and 8 weeks’ half payDiscounted EE and BT products, including mobile and broadbandMarket leading Pension scheme – 5% from you and 10% from usHoliday purchase schemeYou 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.