CityFibre
Senior IP Capacity Planner
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Job Description
This is a predominantly remote role, with occasional travel required. The team meets in person twice per month in Irlam for collaboration and team sessions.
As the UK’s largest independent full fibre network and wholesale platform of choice, we’re busy setting new standards for what digital infrastructure can and should be.
Our network is greener, more reliable and designed for the future. The products we run over it lead the way on speed, value and service - helping businesses to innovate, communities to thrive, and people to live more connected digital lives.
At CityFibre, you’ll be part of something bigger, helping to build a better-connected Britain, together.
Joining us as a Senior IP Capacity Planner
You’ll play a critical role in ensuring the active network never runs out of capacity, covering core, edge, aggregation and access IP domains. Working within the Architecture & Engineering function, you’ll own end-to-end capacity planning, building accurate forecasts and scenario-driven models that enable proactive, strategic decision-making across the network lifecycle. This role goes beyond operational capacity management—you’ll translate demand signals into long-term capacity strategies, investment plans, and delivery priorities, ensuring the network scales efficiently and sustainably.
You’ll receive a competitive salary, a performance-related bonus, and a range of benefits to support you across your financial, physical and mental wellbeing.
This is some of what you can expect to be doing:
- Owning end-to-end capacity forecasts for active network equipment, including defining thresholds, risks, and augment triggers
- Building and maintaining proactive, scenario-based models covering growth, resilience, and failure planning
- Translating product growth and demand signals into long-term capacity strategies and budget plans
- Generating data-driven augment recommendations and partnering with Engineering and Delivery teams to ensure execution
- Using network telemetry, inventory, and performance data to build accurate, governed forecasting models
- Incorporating space, power, and peak utilisation metrics into all planning decisions
- Leading capacity reviews, influencing senior stakeholders, and ensuring zero capacity-driven incidents
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What you’ll bring to the role
You’ll bring deep, hands-on experience in IP capacity planning within a live telecoms environment, with a strong track record of owning strategic, end-to-end planning decisions. You’ll be comfortable operating at both a technical and strategic level, using data, modelling, and scenario planning to drive business-critical outcomes.
You’ll also have:
- Significant experience in IP capacity planning across core, edge, or backbone networks, with ownership of live network decisions
- Strong understanding of IP network architecture, including router platforms (e.g. Juniper MX, Nokia SR) and protocols such as MPLS, BGP, OSPF, IS-IS, QoS, and traffic engineering
- Proven experience developing and owning long-term forecasting and scenario models to support capacity strategy and investment planning
- Strong data and analytical capability, including experience with SQL and Python or R, and exposure to modern data platforms (e.g. Snowflake or similar)
- Experience working with telemetry, inventory, and performance datasets to build accurate, data-driven capacity plans
- Strong stakeholder engagement skills, with the ability to translate complex analysis into clear, actionable insights and influence decision-making
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Life at CityFibre
Everyone deserves to feel heard, valued and truly included. Working alongside our Employee Communities, we’re committed to creating a workplace where people feel a genuine sense of belonging and pride in what they do. That’s why we’re proud to be a Times Top 50 Employer for Gender Equality, endorsed by WORK180, a Disability Confident Leader, a Care Leaver Friendly Employer, and a signatory of the Armed Forces Covenant Gold Award.
We’ll support you to thrive inside and outside of work, with opportunities to grow your career and a flexible benefits package that adapts to your life – including generous annual leave (with an extra day off on your birthday), private medical insurance, health cash plans and family-friendly policies.
Find out more about our culture, communities and benefits on our careers site.
Additional Information
We want to create a sense of belonging for everyone. We celebrate our differences and work to ensure everyone has the best chance to succeed, starting with our recruitment process. No matter your background, family or carer status, ethnicity, sexual orientation, religion, age, disability, gender, or gender identity, we welcome your application. If you need any support or reasonable adjustments throughout the application process, please email us at [email protected]. We want to help!
Division: Architecture & Engineering
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