Senior Engagement Strategist in London

OLIXIR is a next‑generation healthcare agency, created by uniting FCB Health London and McCann Health London as part of Omnicom Health’s evolving European structure. By bringing our teams together and combining our strengths, we’re building something entirely new: a more agile, more connected, and more ambitious partner for healthcare brands. OLIXIR blends award‑winning creative excellence with deep scientific expertise, strategic thinking that drives meaningful brand growth, and fully integrated production at scale. We’re also unlocking new innovation opportunities, powered by AI and future‑focused ways of working.

Working within the Engagement Strategy team, the Senior Engagement Strategist is responsible for leading the development of integrated, omnichannel engagement strategies and customer experiences for our clients’ brands. At its core, the role is about understanding audiences, their behaviours and needs, and the environments in which they engage with healthcare brands. The Senior Engagement Strategist brings together audience insight, customer experience, channel strategy, content, data, technology and measurement to create clear, actionable engagement strategies that deliver against client and brand objectives.

About You: You’re a strategic thinker who understands how people engage with healthcare brands and can turn complex information into clear, actionable recommendations. You’re confident working across the full omnichannel ecosystem and understand how audience needs, content, channels, data, technology and measurement connect to create effective customer experiences. You’re comfortable taking ownership of a project from brief through to recommendation, while bringing the right people together to strengthen the thinking. You can confidently engage clients, lead workshops and present your point of view, and you know how to balance strategic ambition with practical delivery. You’re curious about people, behaviours, technology and the changing healthcare landscape. You’re collaborative by nature, able to work effectively across disciplines, and are ready to provide guidance and support to more junior members of the team.

Essential Functions:

• Lead engagement strategy projects and pitches end-to-end, turning complex or unclear briefs into a clear strategic approach and activation‑ready, client‑ready recommendations, with little senior oversight.
• Develop integrated omnichannel engagement strategies and customer experiences across HCP, patient and wider healthcare audiences.
• Apply audience segmentation, persona development and behavioural/customer insight to inform engagement strategy, synthesising qualitative, quantitative, attitudinal, behavioural and performance evidence alongside relevant data, research and market inputs.
• Develop engagement frameworks across the customer journey or adoption ladder, identifying key moments, barriers, triggers, content needs and engagement opportunities, and translating these into clear strategic priorities and actions.
• Develop channel strategies across markets and specialties, defining the role of paid, earned, shared and owned touchpoints and translating channel analysis and audience behaviours into actionable omnichannel plans.
• Define how engagement should be sequenced and orchestrated across moments, including messages, content needs, behavioural triggers, channel roles and next‑best actions.
• Develop joined‑up omnichannel ecosystems that define how content, channel roles, data flows and technology work together across those moments.
• Develop both global and local customer engagement strategies, including launch planning and optimisation of established brands.

Client Leadership & Workshops:

• Build strong and trusted relationships with clients, acting as a strategic engagement partner and confidently articulating the agency's point of view.
• Design and facilitate client workshops that move strategic thinking forward, including audience development and prioritisation, journey mapping, channel planning, tactical ideation and engagement ecosystems.
• Present complex thinking clearly and persuasively, challenging assumptions where appropriate and turning strategic recommendations into a clear course of action.
• Identify engagement opportunities within existing and prospective client business and help shape the strategic response, contributing to organic growth and new business.

Cross‑functional Activation:

• Work closely with media, data and analytics, creative, and account teams to turn engagement strategy into practical, integrated campaign plans.
• Bring together, brief and challenge specialist inputs across media, data, technology and other disciplines, ensuring they contribute to a coherent, customer‑centric engagement strategy and activation‑ready plan.
• Inspire and empower creative teams by providing a clear strategic foundation for ideas that can work effectively across channels.
• Develop relationships with relevant external partners, platforms and technology providers where appropriate.

Measurement & Optimisation:

• Define KPIs, learning agendas, optimisation frameworks and reporting requirements in partnership with data and analytics teams as part of the engagement strategy.
• Use performance data and learning to identify opportunities to optimise customer experiences, channel activity and engagement plans.
• Build learning and optimisation loops that help teams refine the experience and improve future activation based on performance.
• Stay abreast of developments in data, technology, platforms and healthcare engagement to identify opportunities for innovation and effectiveness.

Team Contribution:

• Support the development of engagement strategy capabilities across the wider team through knowledge sharing and by providing guidance and constructive support to more junior team members within project work.
• Share relevant learning and developments in omnichannel engagement, customer experience, data and innovation across the agency.
• Model high standards of collaboration, responsibility, accountability and inclusive working.

What You'll Bring:

• Strong relevant experience in digital and omnichannel engagement strategy, with healthcare or pharmaceutical experience and a strong understanding of HCP, patient and wider healthcare audiences.
• A proven ability to independently own complex engagement strategy work from an ambiguous brief through to a high‑quality, actionable client deliverable, while working with little senior oversight.
• Strong strategic storytelling and presentation skills, with the ability to make complex information simple and create clear, compelling, decision‑ready recommendations.
• Confidence engaging senior clients, facilitating decisions and bringing together multidisciplinary teams without relying on formal authority.
• Strong analytical and organisational skills, with curiosity, rigour and sound judgement in interpreting audience, behavioural, market and performance evidence.

We value difference and believe in creating an inclusive environment where everyone can belong and succeed. If you need any support or adjustment due to a disability during the application process, please let us know.