Senior Client Success Director

What you’ll do:

We are seeking a Senior Client Success Director with deep expertise in Marketing effectiveness and econometrics to lead our most strategic client relationships and shape the future of our client success function.

In this senior leadership role, you will serve as a trusted advisor to C‑suite executives, ensuring advanced analytics solutions deliver measurable business outcomes while driving account growth and retention.

The Client Success Senior Director will be responsible for client leadership across a selection of Gain Theory’s portfolio and serve as the primary point of contact for senior client stakeholders.

Key Responsibilities:

Project Delivery

• Ensures projects within remit are managed to time and scope.
• Puts in place robust quality assurance techniques and follows them to ensure work going to clients is right first time.
• Uses data and analytics interpretation skills to bring insights to life for a mid‑senior audience.
• Is a strong data storyteller who can explain complex insights at a simple, impactful level.
• Ensures clients have full knowledge and training of Gain Theory Interactive, highlighting any bugs or enhancements to the GTI team.
• Ensures projects are following Operational Excellence process and that there is full adherence from Client Success team.

Financial

• Looks for opportunities to drive profitable growth for clients and take on incremental (e.g. 1‑30% growth) opportunities.
• Identifies value driven for clients and looks to assist clients in recognising that value.
• Understands how decisions made on projects will impact profitability and looks to run more efficient processes or tighter management of scope.
• Understands how actions they take will impact overall Gain Theory profitability and looks to make the right decisions at all times.
• Is involved in new business pitches as part of a wider team; may be expected to lead opportunities that do not need a large team.

Client Management

• Manages against SOW to ensure limited scope creep and slippages.
• Implements plans to drive higher client satisfaction across every metric, highlighting any issues to client leadership.
• Helps to increase the number of stakeholders and advocacy at the right level (e.g. most senior day‑to‑day stakeholder). Works with client leadership to embed plan.
• Works with client leadership on risk mitigation process, highlighting any risks early and working on plans to mitigate.

Thought Leadership

• Has sufficient knowledge of most of Gain Theory solutions, systems and ways of working to have a healthy conversation with a client in any aspect of Gain Theory’s offering.
• Maintains a solid understanding of the clients’ industries, keeping up to date with key trends and seeking opportunities for growth.
• Maintains a good understanding of the marketing effectiveness industry, assessing threats, challenges and opportunities that the industry presents to client relationships.

Values & Team

• Is an inspirational leader for Client Success Managers.
• Implements initiatives to improve Client Success team satisfaction within squad.
• Facilitates collaborative learning and knowledge sharing to boost team capabilities.

KPIs & Success Factors

• Net Sales Growth
• Client Stakeholders
• Client Influence
• Client Advocacy
• Client Satisfaction
• Client Success Practice Area ESAT
• OPEX Implementation
• Value generated for Clients
• Awards entered

What you’d need to succeed:

• 8+ years of experience in client success, consulting, or marketing analytics roles with significant client‑facing responsibility.
• Demonstrated expertise in Marketing Mix Modeling and econometrics (model interpretation, ROI analysis, elasticity, attribution methods).
• Proven ability to lead, manage, and develop high‑performing Client Success teams.
• Demonstrated success in managing enterprise portfolios and influencing C‑suite stakeholders across global brands.
• Excellent communication, presentation, and stakeholder management skills.
• Strong strategic thinking and problem‑solving skills.
• Strong commercial mindset with experience identifying new opportunities.
• Proven project management experience, with the ability to manage multiple projects simultaneously.
• Skilled in tools such as Excel, PowerPoint, and at least one analytics environment (R, Python, or similar).
• Bachelor’s or Master’s degree in a quantitative field (e.g., Statistics, Economics, Mathematics).

Equal Opportunity Employer

WPP (VML) is an equal opportunity employer and considers applicants for all positions without discrimination or regard to characteristics. We are committed to fostering a culture of respect in which everyone feels they belong and has the same opportunities to progress in their careers.

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