Vision: To be the UK’s leading digital infrastructure partner, enabling a fully connected future
Mission: Deliver reliable, high quality site access, infrastructure and services that support our customers’ evolving connectivity needs.
For almost two decades, Cornerstone’s infrastructure has quietly supported the UK’s mobile networks. Whilst we continue to strengthen that foundation and extend its reach, we’re in an exciting period of acceleration and product development that will see us enable more connectivity and compute to more communities and industries across the UK.
As we accelerate into new products, new markets, and new opportunities, you will play a defining role in what our success will be.
The Role
The Assessment Lead helps spot smart new opportunities and shape them into commercially sound ideas worth backing.
You’ll work across Product, Sales, Technology and Finance to size up new ideas fast and turn them into clear, structured recommendations.
It’s a role for someone who can blend analysis, commercial thinking and technical understanding to help us back the right opportunities.
You’ll bring clarity to ambiguity and help make sure big ideas stack up before we scale them.
Why This Role Matters
This role sits at the front end of Cornerstone’s next phase of growth — helping us spot the right opportunities early, shape them with rigour, and focus investment where we can create the most value.
In a fast-moving environment with big ambitions, the Assessment Lead brings the clarity, commercial judgement and cross-functional perspective needed to turn promising ideas into scalable, customer-relevant propositions.
What You’ll Do ✨
🧭 Lead rapid assessment of new opportunities and shape clear go / refine / stop recommendations.
🚀 Turn complex business questions into structured analysis across market, demand, feasibility and delivery.
✍️ Build business cases and financial models covering revenue, cost, investment and return.
📣 Validate opportunities through market, customer and competitor analysis, highlighting risks and dependencies.
🧩 Shape solution concepts and assess delivery, operating model and partnership options.
🔁 Turn complex findings into clear executive insights, materials and senior leadership playbacks.
🌐 Support prioritisation across the new business portfolio using evidence-based commercial judgement.
📊 Partner across Sales, Product, Technology, Delivery and Finance to move opportunities toward launch.
What You’ll Bring
🧠 Sharp thinking and a talent for turning messy questions into clear answers.
💷 Strong commercial instinct backed by solid financial modelling skills.
🎯 You can get to the point fast and make complex ideas land with senior stakeholders.
⚡ Comfortable with ambiguity, energised by pace, and calm when the clock is ticking.
🤝 Collaborative by nature — you work brilliantly across commercial, product, tech and finance teams.
🌍 Bonus points for experience in telecoms, digital infrastructure, new ventures or product-led growth.
💼Previous consulting experience in telecoms, digital infrastructure, new ventures or product-led growth.
Why Join Us?
This is a great opportunity to step into a high-impact role at a pivotal point in Cornerstone’s growth. On a contract or permanent basis, you’ll have the chance to shape real opportunities, work closely with senior stakeholders, and bring structure, pace and commercial thinking to some of our most important new business decisions.
Our commitment to Equity, Diversity, and Inclusion (EDI) is fundamental to our success. We strive to cultivate an inclusive environment where every employee feels valued, respected, and empowered. By embracing unique perspectives and experiences, we drive innovation and drive our organisation forward, therefore, we recognise the importance of welcoming applications from candidates of all backgrounds.
We want to ensure everyone is able to present their best self throughout the recruitment process so if you require any adjustments, please let us know.
If this role is of interest to you and you would like to find out more, please do apply with an up to date version of your CV.