Customer Success Manager (German speaking)

InfoSum
London

InfoSum is the world’s leading data collaboration platform used by enterprise businesses to collaborate across data sources and deliver richer customer experiences, prioritising consumer privacy. Our client base is one of the most diverse and exciting portfolio’s on the market and this role will play an integral part in building strong relationships and helping to diversify our portfolio even further!

As a people-first organisation, we can offer you the personal and professional flexibility needed to get the job done, to grow with us, and help challenge the status quo. If you want to work with a business that encourages collaboration, champions the idea that the sum is greater than its parts, then we want to hear from you.

About you

We are looking for a passionate individual with ideally some experience within the AdTech space owning a portfolio of existing client relationships. Within the first year, you will find yourself managing a portfolio of 10 - 15 client relationships and starting to look for ways to attract new customer relationships, so a self-starter attitude and the ability to ask the right questions will see you succeed.

You would be a great fit if you are commercially astute, data-driven, detail-oriented, and able to manage a sophisticated and diverse portfolio of clients to ensure they receive the highest value from our platform.

About the role

You would be responsible for managing and growing strategic accounts by working with our clients’ engineering, product operations, and commercial teams to understand and implement an ever-growing set of use cases leveraging our platform. You can expect your day-to-day operational responsibilities to cover:

  • Driving daily interactions with a defined set of partners
  • Act as the client’s go-to advocate and navigate internal processes at InfoSum and the client to provide the best outcome for the client
  • Deliver analytical insights to client by providing actionable recommendations
  • Track performance and engagement of the platform to ensure we are driving towards the best possible outcome for the client / their partners
  • Create and establish go-to-market plans for the account and each of its multiple use cases
  • Run a reliable and organised account process that keeps InfoSum on top of deadlines and capable of seamlessly introducing new revenue growth initiatives

Requirements

  • German speaking
  • Demonstrable knowledge of how data and identity are activated in the digital media ecosystem
  • At least 1 years experience in the advertising technology industry (AdTech)
  • Clear communicator with emphasis on precision to detail complex solutions
  • Demonstrable track record of successfully growing complex partnerships
  • Ability to build and cultivate new relationships with potential and existing partners
  • An organised self-starter that pitches in as needed in a fast moving startup environment
  • Excellent interpersonal and customer-facing skills
  • Positive and community-oriented attitude, happy to roll up sleeves and pitch in
  • A high level of curiosity and willingness to understand complex solutions designed to service customer needs
  • Critical thinking to ask tough questions and help the team continuously evolve

Benefits

You will receive a competitive salary based on your experience and ability to perform in role between £45,000 - 50,000 basic, 25 days annual leave (excluding bank holidays), target led bonus scheme, 5% pension contribution, private health care, mental wellbeing support via our fantastic EAP, corporate discounts and salary sacrifice schemes.

We have a fantastic office in London complete with a fully stocked fridge, catered lunches 2 times a week and snacks. We have a hybrid working culture allowing you flexibility to collaborate with colleagues in office 2-3 times a week.

Posted 2025-07-29

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