Group Manager Client Service (all genders)

Hearts & Science Germany; Berlin; On-site; EUR 65,000 - 95,000; Full time

Job summary

Hearts & Science Germany, part of the Omnicom Media Group, is seeking a senior media strategy professional to own integrated media strategies and drive full‑funnel growth across online and offline channels. You will connect branding with performance, orchestrate projects, and act as a strategic thought leader for clients and teams.

You will lead, develop, and empower a team, establish quality standards, and build client‑specific measurement frameworks to derive actionable insights and measurable

Qualifications

• Several years of experience in media planning/consulting.
• Strong strategic depth and consulting expertise.
• Excellent English proficiency; German is a plus.

Responsibilities

• Own integrated media strategies from concept to execution across channels.
• Drive full-funnel growth by connecting branding and performance.
• Act as a strategic challenger and thought leader to elevate client solutions.
• Take on end-to-end responsibility: manage projects and orchestrate agencies/partners.
• Lead, develop, and empower a team with clear quality and performance standards.
• Think measurement strategically and develop client-specific frameworks.

Skills

Media planning

Media consulting

Strategic thinking

Analytical thinking

Presentation skills

English proficiency

German language

Leadership experience

Entrepreneurial mindset

Client engagement

Job description

Welcome to Hearts & Science – one of the fastest-growing full-funnel agencies. With offices in Düsseldorf, Hamburg, Berlin, Cologne, Munich, and Ludwigsburg, more than 200 employees skillfully blend branding and performance marketing.

Through our intuitive understanding of brands and media and our focus on maximum efficiency, we expertly transform emotions – with heart and mind – into effective activations.

In this role, you will…

• Own integrated media strategies – from strategic concept to excellent execution across all relevant channels.
• Drive full-funnel growth by intelligently connecting branding and performance and scaling strategies across online and offline channels – from TV to e-commerce.
• Act as a strategic challenger and thought leader: You question existing approaches, drive innovation forward, and continuously elevate the quality of our solutions for clients and teams.
• Take on end-to-end responsibility: You ensure we deliver our best work for every brief, manage projects, and orchestrate agencies and partners.
• Lead, develop, and empower a team – both professionally and personally – and establish clear quality and performance standards.
• Think measurement strategically: You work with the team to develop client-specific measurement frameworks and derive well-founded insights.

What do you need to get started with us?

• Several years of experience in media planning/consulting (approx. 4+ years), ideally from a media agency, with clear strategic depth and consulting expertise.
• A pronounced passion for media strategy – from contact class optimization to complex DSP setups and cross-channel orchestration.
• Strategic, analytical thinking, excellent language skills, and confident presentation abilities.
• Excellent English proficiency in spoken and written form. German is a plus.
• High personal responsibility, an entrepreneurial mindset, and proven first leadership experience.
• The ambition to actively develop Hearts & Science – not just in your role, but as a space for shaping the future.

What do we offer?

Our hierarchies are as flat as Brandenburg, creating space for openness and promoting dynamic exchange. You work independently and with a team of exciting people in an extraordinary work environment on diverse projects for renowned clients.

As the newest addition to the Omnicom Media Group, we benefit from a global network of top-tier teams, expertise, and insights, keeping us technologically up-to-date at all times.

So, if you're ready to ignite data-driven excitement in real-time and values like "You Never Score A Goal Without A Pass" or "Drive It Like You Stole It" make your heart skip a beat, then: Let's talk!

Everyone is welcome here – regardless of gender, nationality, ethnic and social background, religion/belief, disability, age, or sexual orientation. We believe in a culture of knowledge exchange and mutual respect based on the wellbeing of every individual team member.

We value diversity and welcome all applications – regardless of gender, nationality, ethnic and social background, religion/belief, disability, age, or sexual orientation.