Growth Marketing Intern in London

We're UserTesting—the leader in human insight. Our mission is to help organizations craft exceptional customer experiences through fast, actionable feedback. We empower teams to build the best products and experiences by embedding real human perspectives into every stage of the development process—from ideation to launch. With the world's strongest participant network, AI-powered analysis, expert services, and seamless integrations, we help companies eliminate guesswork, align stakeholders, and bring customer needs into sharp focus. Trusted by more than 3,000 organizations worldwide—including 75 of the Fortune 100—UserTesting delivers measurable business outcomes, reduces risk, and helps teams deliver with confidence. Joining our team means being part of a passionate group focused on transforming how companies understand and connect with their customers. Let's build experiences people love—together.

The Growth Marketing Intern – Participant Engagement & Experimentation will join the Growth team to support engagement and retention initiatives across the UserTesting Network. Reporting to the Growth Lead, this role will focus on ideating, documenting, executing, and analyzing engagement experiments across Klaviyo and Intercom. Working closely with the Panel Growth team members, you will help translate the Participant Engagement strategy into structured experimentation. This includes building audience segments, launching campaigns, tracking performance, documenting insights, and iterating based on results. This is a hands-on growth role designed for someone who is curious about experimentation, data-driven marketing, and lifecycle optimization. You will gain direct exposure to real-world growth experimentation frameworks and performance analysis in a high-impact environment.

Responsibilities

• Ideate and propose engagement experiments aligned with activation and retention goals
• Build audience segments and execute campaigns within Klaviyo and Intercom
• Design and run structured A/B tests across messaging, subject lines, timing, and targeting
• Track and analyze campaign performance (open rate, CTR, activation rate, reactivation rate)
• Maintain a structured experimentation log including hypotheses, KPIs, results, and learnings
• Iterate on campaigns based on performance insights and recommend optimizations
• Collaborate with Growth Managers to prioritize experiments and align with broader growth objectives

Requirements

• Currently pursuing or recently completed a degree in Marketing, Business, Economics, Data Analytics, or a related field
• Strong analytical mindset and comfort working with data (Excel/Google Sheets required)
• Hands-on experience with engagement and retention, CRM, or email marketing platforms (e.g., Klaviyo, Intercom) is a plus
• Basic understanding of A/B testing and experimentation principles
• Strong attention to detail and ability to manage multiple manual processes accurately
• Clear written communication skills
• Fluent in English (Our corporate language is English. Please submit your application in English.). French or German would be a plus.

Nice To Have

• Experience in analyzing campaign performance and extracting actionable insights
• Familiarity with growth experimentation frameworks

Don't meet every single requirement but excited about the role? We encourage you to apply! Research shows that underrepresented groups may hesitate to apply unless they meet every qualification. But your unique background could be just what we need to build a stronger, more innovative team. We're committed to creating a diverse and inclusive environment—because different perspectives drive better experiences.

Accommodations

At UserTesting, we're committed to providing inclusive and accessible experiences for candidates. If you require any accommodations or have specific requests to tailor the interview process to your needs, please contact us at talentexperience@usertesting.com.

UserTesting is an Equal Opportunity Employer and a participant in the U.S. Federal E-Verify program. Women, minorities, individuals with disabilities and protected veterans are encouraged to apply. We welcome people of different backgrounds, experiences, abilities and perspectives. UserTesting will consider qualified applicants with criminal histories in a manner consistent with the San Francisco Fair Chance Ordinance, as applicable.