Director, Experimentation, Decision Science

At MERGE, we are Built Different
. We are a marketing and technology agency purpose-built for the intersection of health and wellness-where human impact matters most. By weaving storytelling through technology, we move beyond traditional engagement to Whole Human Marketing. This approach recognizes that humans are multidimensional and complex, and uses AI to ensure every brand interaction feels natural, contextual, and relevant. This commitment to human-first innovation is what brings us together and propels us forward.

We are united by our North Star: to unite people and brands to empower healthier, happier lives.

At MERGE, we strive to create a superior work experience where talented and ambitious people grow. An experience that encourages people to think higher and feel deeper. An experience where people engage their minds and hearts to do the best work of their careers.

Play a pivotal role on our consulting team, working directly with clients to design, manage, and scale high-impact experimentation and personalization programs. Serving as a trusted advisor across web, digital, and media channels, you will consult on scaling client experimentation programs and drive hands-on program execution. In this role, you will mature client testing capabilities, maximize ROI, and unlock deeper customer insights to drive business growth.

• Design comprehensive cross-channel experimentation roadmaps and learning agendas aligned with client business goals across web, app, and paid/owned media channels
• Formulate data-driven hypotheses, determine experiment feasibility, and define primary/secondary KPIs, target audiences, and statistical parameters (sample size, experiment duration, confidence intervals)
• Drive audience segmentation and personalization strategies to deliver tailored user experiences across key digital touchpoints
• Oversee and facilitate the complete experimentation workflow—from ideation, targeting setup, and variant build specs to post-launch quality assurance
• Collaborate closely with engineering, analytics, UX/UI, and media teams to validate tag implementation, audience integration, and parameter tracking prior to test launches.
• Translate multivariate, A/B, and personalization experiment results and insights, into compelling, executive-ready stories and strategic next steps
• Work with analysts to communicate program value through performance measurement and insights Act as a strategic consultant to assess client experimentation programs, benchmark maturity against industry standards, and deliver action plans to elevate client capabilities
• Advise and support clients on maturing their experimentation programs focusing on establishing and/or optimizing experimentation execution processes, governance, documentation, intakes, experimentation methodologies and frameworks and test prioritization.
• Upskill client and internal agency teams on experimentation best practices, statistical literacy, and testing tool capabilities
• Cross-pollinate winning experiment concepts across different media formats, site sections, and client portfolios to maximize output efficiency
• Assist with RFPs, contract renewals, client upsells, and identifying new strategic service opportunities

• Bachelor’s degree in Marketing, Business, Statistics, Psychology, Human Factors, or equivalent practical experience.
• 5+ years of web, digital or media experimentation experience
• Direct experience running A/B, multivariate, and personalization experimentation programs across web, mobile, or digital media platforms.
• Proven track record of managing external client relationships, presenting to key stakeholders, and…