An introduction
Stefan Keller
Turning customer understanding into enduring brand value.
Europe · Global perspectiveOpen to Board appointments · Advisory roles · Speaking invitations
Start a conversationMy approachStrong brands begin with a precise understanding of the customer and become valuable through consistent commercial choices. I connect positioning, experience and growth measurement, while staying honest about what the evidence can attribute to marketing.
- Category brand
- #1
- From fourth in three years
- Customer lifetime value
- 2.6×
- Through loyalty and experience redesign
- Markets launched
- 19
- One brand, locally fluent
- Effectiveness awards
- 34
- For work that moved the business
Work worth discussing.
01Brand transformation
An expanding portfolio had blurred the organisation's proposition. I led work to understand the choices customers were making, clarify the role of each offer and establish a more coherent brand architecture. The programme aligned leadership around a common narrative and gave customer-facing teams a practical framework for communicating it.
02Customer growth
Acquisition activity and customer experience were managed in separate conversations. We brought the journey into a single view, identified the moments that shaped confidence and linked marketing priorities with product and service decisions. The work created clearer accountability for the experience behind the campaign promise.
03Market creation
Entering an unfamiliar segment required more than a new campaign. I worked with commercial teams to test the proposition, understand adoption barriers and develop evidence that helped customers evaluate the offer. We sequenced market activity around what we were learning, rather than committing every channel before the proposition had been tested.
The leadership record
Trusted with consequential decisions.
In the boardroom
- Aurelia ConsumerIndependent Director · 2023 — Present
- The Creative Futures TrustTrustee · 2019 — Present
Recognition
- Marketer of the YearThe Brand Effectiveness Awards · 2024
- Women in Leadership — MarketingThe Boardroom Review · 2022
In conversation
- “How a fourth-placed brand became the category leader”The Brand Effectiveness Journal · 2025
- “Why the board should own brand risk”The Boardroom Review · 2024
- “Episode 104 — Customer truth over campaign noise”The Leadership Ledger podcast · 2023
Brought the customer into every boardroom conversation, with evidence rather than adjectives.
An invitation
The most consequential work begins with a conversation.
For board, advisory and leadership conversations where brand strategy matters.
- Board appointments
- Advisory roles
- Speaking invitations
office@stefankeller.example