Marketing Manager (Events) in London

As a Marketing Manager, you’ll play a critical role within our International Marketing team, helping brand marketers connect with our sales teams through memorable, high‑impact experiences that drive real commercial outcomes. Reporting to the VP of Marketing, you will play a key role in planning, promoting, and running various company and partner events. These events include executive roundtables, trade events, webinars, and industry sponsorships. You’ll lead events from inception through execution and post‑event reporting, ensuring every initiative delivers measurable demand for the business.

You’ll work closely with Sales, Content, and Product, and external partners to craft compelling event narratives and engaging presentations that resonate with target accounts. If you’re a strategic marketer with a passion for events, storytelling and creating relevant connections for sales teams, this is your opportunity to join a collaborative, high-reaching team that values creativity, ownership, and results.

What You’ll Achieve

• Plan, implement, and optimise a portfolio of owned and sponsored in‑person events and webinars, leading all aspects from concept through post‑event analysis.
• Create compelling event presentations, sales decks, one‑pagers, and follow‑up materials used by Sales to advance conversations with leads and target accounts.
• Amplify marketing activity across multiple channels including email, social and sales channels to maximise attendance and engagement.
• Own event logistics end‑to‑end—including budgeting, forecasting, venue sourcing, vendor management, and on‑site execution.
• Lead event budgets responsibly, tracking spend and return on investment against targets and providing clear performance reporting to Senior Leadership.
• Drive post‑event momentum by developing content to engage leads and support pipeline progression.
• Track all event leads and engagement activity, ensuring accurate attribution, reporting, and timely sales follow‑up.
• Partner closely with Sales to support lead prospecting, account engagement, and follow‑up strategies tied to event activity.

What you’ll bring with you

• Proven experience in event, or B2B marketing, ideally within ad tech, martech, or digital media environments.
• Demonstrated success using events and webinars to generate demand, engage key accounts, and support sales pipeline growth.
• Excellent content and storytelling skills, with the ability to shape event narratives and collaborate on impactful keynote presentations.
• Experience in marketing automation tools to create compelling landing pages and invites (e.g. HubSpot, Marketo, Eloqua).
• Experience handling complex event logistics, budgets, vendors, and timelines with confidence and attention to detail.
• Highly detailed, proactive, and comfortable leading multiple events and deadlines in parallel.

Why you might stand out from other talent

• Understanding of retail media and/or the wider digital advertising ecosystem.
• Experience leading or coordinating marketing and advertising industry events, including sponsorships and partner activations.
• Confidence working closely with senior sales leaders and external collaborators.
• Hands‑on experience with Salesforce (or similar CRM) for lead tracking and reporting.

When You Join Us, We’ll Create Something EPIC Together. Epsilon is a global data, technology and services company that powers the marketing and advertising ecosystem. For decades, we’ve provided marketers from the world’s leading brands the data, technology and services they need to engage consumers.

Our pillars aren't just words. They're how we show up every day:

• People centricity: We focus on employee well‑being in an environment where colleagues truly care about each other.
• Collaboration: We work together, support one another, and collectively achieve goals.
• Growth: There are endless opportunities for growth through learning, development and career advancement.
• Innovation: We drive progress through cutting‑edge solutions and forward‑thinking approaches.
• Flexibility: We’ve created a balance between work and personal life, and we encourage adaptability to solve problems creatively.

We know that we have some of the brightest and most talented employees in the world, and we believe in rewarding them accordingly. If you work here, expect competitive compensation, a great benefits package and endless opportunities to advance your career. We offer hybrid working opportunities, with our office space located in the Iconic Television Centre, White City.

As part of our dedication to enhance our inclusive and diverse workforce, Epsilon is committed to equal access to opportunity for people without regard to race, age, sex, disability, neurodiversity, sexual orientation, gender identity, pregnancy and maternity, marriage and civil partnership or religion or belief. We are committed to providing reasonable adjustments for candidates in our application process.