Job Description
We’re creating something special. We are joining forces to create the biggest mobile network provider in the UK. Through our collective strengths and talents, we will transform customers’ experience and create a best-in-class network for coverage, connectivity, and reliability, delivering greater value and more choice for the nation than ever before.
There are very few moments in our careers where we can feel the ground shifting beneath us, where we can sense that something bigger than we’ve known before is taking shape. We’re not just building a company. We’re going to build a culture, a legacy and a future to be proud of. This will require remarkable leadership and together we can set the standard in the industry and beyond for both customer and employee experience, in what it is a career-defining opportunity.
The GTM Planning & Governance Specialist plays a key role in supporting unified, accurate, and scalable go‑to‑market planning across brands and channels. You’ll contribute to planning cycles, capacity analysis, governance forums, and process documentation. You’ll maintain essential trackers, coordinate intake, assist with tooling and automation, manage lessons learned, and provide operational support that keeps teams aligned and moving efficiently.
What you’ll do
* Support the preparation and coordination of quarterly GTM planning cycles.
* Maintain planning trackers, calendars, and shared artefacts to ensure visibility and alignment.
* Assist in consolidating planning information into clear, concise summaries for management.
* Log and track new requests through the GTM Front Door intake process.
* Support capacity planning by updating scorecards, dashboards, and utilisation trackers.
* Perform data analysis to identify trends, risks, and gaps in planning inputs.
* Provide coordination support for GTM governance forums, including scheduling, documentation, and action tracking.
Qualifications
Who you are.
* Strong organisational skills, with the ability to manage multiple tasks, deadlines, and moving parts with clarity.
* Comfort working with data, including spreadsheets or dashboards, and the analytical mindset to turn numbers into insight.
* Adaptability in fast‑paced, cross‑functional environments, where priorities shift and collaboration is key.
* Ability to build strong working relationships across brands, channels, and planning functions, fostering trust and alignment.
* Motivation to learn, grow, and develop within GTM operations and planning, with a proactive approach to expanding your skills.
Worried that you don’t meet all the desired criteria exactly?
We know that everyone is unique, with multiple aspects to their identity and different experiences behind them. We are passionate about Inclusion for All and creating a workplace where everyone can thrive, whatever their personal or professional background. If you’re excited about this role but your experience doesn’t align exactly with every part of the job description, we encourage you to apply as you may be the right candidate for this role or another role, and our recruitment team can help you see how your skills fit in.
Additional Information
Closing Date: 11/05/2026
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Need to know
We are regulated by the Financial Conduct Authority and all offers of employment for this role are subject to background checks, including criminal (DBS) and financial checks to meet the regulators standards.
We believe everyone should have the opportunity to interview for a role that matches their skills. In collaboration with our Talent, Diversity & Inclusion teams and our employee-led DEI Networks, we identified a range of reasonable adjustments to help you feel comfortable and perform at your best self during the interview process. If you require any reasonable adjustments or have an accessibility request as part of your recruitment journey, for example, extended time or breaks in between online assessments, a sign language interpreter, or assistive technology, please contact your recruiter directly or email jobs@three.co.uk for guidance.
We use AI in different parts of our business to boost innovation, improve efficiency, and create new opportunities. We know many candidates use AI to fine-tune their CVs or prepare for interviews, but what we really care about is your unique experiences and achievements.
During the interview, we want you to rely on your own knowledge and skills to show us who you really are—your personality, creativity, and abilities. Above all, we’re looking for authenticity and can’t wait to get to know the real you.
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