Hamburg Skyline

The team behind your campaigns

Account management, ad operations and project management are based with us in Hamburg. You have a dedicated contact who supports your campaign from planning to reporting and optimizes it continuously.

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Team

Our Team

Mathias Seidler
Chief Executive Officer

Mathias has been founder and CEO of Interactive Performance since 2017. With over 20 years of experience in performance marketing, he combines entrepreneurial vision, technical expertise and efficiency. His leadership shapes the strategic direction of the company and drives innovative campaigns and measurable results that clients value. He develops talent and creates an environment that enables lasting success.

ms@interactiveperformance.de
Sarah Oberlein
Head of Account Management

Sarah has been part of the team since November 2025, bringing over a decade of experience in sales and account management. She combines broad expertise from a variety of roles with a clear focus on performance growth. Her strategic perspective ensures that client potential is fully realised. Her commitment delivers not just efficient processes, but results.

so@interactiveperformance.de
Maria Langenbacher
Account Managerin

Maria has been strengthening the Interactive Performance team since July 2025. As project manager she brings valuable experience from working in large international corporations. With her structured way of working and fresh perspective, she ensures smooth processes and supports the efficient delivery of our client projects.

ml@interactiveperformance.de
Alexandra Knipper
Senior Software Developerin

Alexandra has been an integral part of the team since 2017. With many years of industry experience, much of it working alongside Mathias, she combines technical expertise with clear communication and strategic thinking. She ensures that client projects are delivered smoothly, efficiently and successfully.

ak@interactiveperformance.de
Lia Jo Köhler
Senior Projekt Managerin

Lia has brought her extensive project management experience to the team since 2023. As head of project management, she keeps the organization of every campaign on track, with a clear focus on what our clients need, so campaigns are delivered efficiently.

lk@interactiveperformance.de
Steffen Witte
Head of Ad Operations

Steffen strengthens the team with comprehensive expertise in media optimisation and programmatic advertising. His many years of experience mean he knows exactly how to scale campaigns efficiently. His focus is always on data driven decisions. With analytical sharpness and technical know how he ensures that budgets are deployed optimally and deliver measurable performance gains.

sw@interactiveperformance.de
Marie-Elène Vignol
Working Student, Ad Management

Marie has been part of the Interactive Performance team since April 2026, supporting ad management. She knows the operational side of performance marketing, works in a structured way and thinks analytically. She asks the right questions and brings solid practical experience alongside her online marketing studies at IU. Her work stands out for its calm, clean and reliable execution.

mv@interactiveperformance.de