HEARTS & SCIENCE INTERNATIONAL | OMNICOM MEDIA
JOB SPECIFICATION
Who We Are
A global media agency delivering connected, emotionally intelligent media through a proactive, boutique service for International clients.
We Are On A Mission
To turn change into competitive advantage for our clients—moving beyond superficial data to unlock the power of emotional connection. As Agents of Change, we help brands harness shifts in culture, technology, media and consumer behaviour to drive growth beyond borders.
How We Work
Our clients receive a high touch partnership that integrates the best of Omnicom’s reach, breadth and capability—making it easier, better and faster for brands to grow internationally.
What We Deliver
We identify growth audiences, orchestrate integrated media experiences and create predictable value worldwide. Powered by Omnicom, our ‘Heart & Science’ approach across audience creation, experience planning, digital, data, partnerships and operations, we deliver synchronized, value creating activation centrally and in collaboration with our local t network.
Role
Performance Director, EMEA
Hearts & Science | Omnicom Media
Raison d’Être
This role provides strategic oversight across the full international performance remit, ensuring Hearts & Science delivers market‑leading digital excellence for ON Running across EMEA. As a central leader within our London‑based hub, you will align global strategy with regional execution, driving clarity, consistency and measurable performance impact across markets.
You will steer the day to day orchestration of ON Running’s international performance initiatives—acting as a critical connector between global teams, regional leads and specialists. Your leadership ensures that data, insights and best practices are embedded across the network to elevate capability and accelerate growth.
As an Agent of Change, you bring a forward‑thinking, solutions‑oriented mindset, using emotional intelligence and commercial rigour to turn complexity into clarity, data into meaningful direction and ambition into tangible business outcomes.
Operating at the centre of our London led team, you will proactively support the Digital Agency Partner, guiding crossmarket collaboration and ensuring seamless coordination with our US counterparts through robust project management, governance frameworks and performance methodologies.
Responsibilities
Driving digital performance:
Performance Program
Performance planning and reporting:
This is a fast-paced environment, working and connecting with some of the industry’s best marketing and advertising professionals all around the world. This position reports to the Performance Lead, working closely with the global teams based in London.
Client experience
Team management
Skills/Experience:
Reporting
Reports to Agency Partner, Digital (EMEA).
Residence
Omnicom, Bankside 2, Southwark Street, London, with flexibility as required for EMEA collaboration.
Flexible Working
At Omnicom Media Group, we are committed to supporting flexibility for our people while fostering collaboration, innovation, and teamwork. We have a hybrid working model (three days in the office, two working remotely), to ensure that we meet the needs of both our people and our business, balancing the benefits of in-person connections with the flexibility of remote working. Our standard working hours are 9:30 – 17:30, but we offer the ability to flex around core hours of 10:30 – 16:30 to give our people flexibility on how they manage their working day, whether that’s in the office or working remotely. For example, you could start work at 8:30 and finish at 16:30 or start at 10:30 and finish at 18:30.
We encourage open conversations between our people and managers to help navigate high-need periods and individual circumstances. Our goal is to create an environment where people feel genuinely supported to do their best - both in their careers and in their lives outside of work.
Be Your Best
We want everyone to make the most of the opportunity to shine and showcase your talents and we are happy to make adjustments in the recruitment process so you can be your best. Please discuss any specific requirements with your dedicated Talent Team member or if you would feel more comfortable, you can email us confidentially at beyourbest@omnicommediagroup.com to let us know how we can support you.
Diversity, Equity & Inclusion at OMG
At OMG, our vision is to be an agency where difference is valued and everyone is able to thrive in a culture of equality, inclusion and belonging. We are committed to providing a truly inclusive environment that reflects today’s society, where everyone is able to bring their true selves to work, and where diverse voices and backgrounds are valued, heard, and well-represented.
We will process your personal data in accordance with our Recruitment Privacy Notice which is available on https://omnicommediagroup.com/recruitment-privacy-notices/.

OMG UK delivers transformational experiences for consumers, clients and talent. Powered by the Omni marketing orchestration system, OMG connects best-in-class capabilities that enable our full-service media agencies OMD, MG OMD, PHD and Hearts & Science to deliver more relevant and actionable consumer experiences, more productive and proactive client experiences, and more collaborative and rewarding talent experiences.
We are enormously proud of our Agency and Network of the Year accolades, including most recently, PHD named Adweek’s Global Media Agency of the Year, MG OMD named Thinkbox TV Planning Agency of the Year, and OMG Unite named Media Agency of the Year at the Leadership and Diversity Awards.
We are committed to providing a truly inclusive environment where everyone is able to bring their true selves to work, diverse voices and minority communities are valued, heard and well represented, and where everyone is able to thrive in a culture of equality, inclusion and fairness.