Sr. Staff Marketing Data Scientist

About Quizlet :

At Quizlet, our mission is to help every learner achieve their outcomes in the most effective and delightful way. Our $1B+ learning platform serves tens of millions of students every month, including two-thirds of U.S. high schoolers and half of U.S. college students, powering over 2 billion learning interactions monthly.

We blend cognitive science with machine learning to personalize and enhance the learning experience for students, professionals, and lifelong learners alike. We're energized by the potential to power more learners through multiple approaches and various tools.

Let's Build the Future of Learning

Join us to design and deliver AI-powered learning tools that scale across the world and unlock human potential.

About the Team :

Our Data Science team at Quizlet partners with the Product, Marketing, and Finance teams to define the metrics that matter and to turn noisy signals into clear, causal decisions. This role builds and operates the TOF measurement system that informs spend, audiences, creative, and channel mix.

About the Role :

You'll design trusted incrementality and MMM measurement, stitch multiparty data (ad platforms, AppsFlyer / MMP, web / app analytics, internal events), and turn models into concrete budget and targeting decisions. You will not manage people; you'll lead through technical depth and repeatable delivery.

We're happy to share that this is an onsite position in our San Francisco office. To help foster team collaboration, we require that employees be in the office a minimum of three days per week : Monday, Wednesday, and Thursday and as needed by your manager or the company. We believe that this working environment facilitates increased work efficiency, team partnership, and supports growth as an employee and organization.

In this role, you will :

• Own cross-channel incrementality : stand up and analyze geo / user holdouts, heavy-ups, synthetic controls, CUPED / diff-in-diff, and brand-lift; produce incremental qualified visits / sign-ups with uncertainty
• Build an always-on testing calendar and power analyses; automate ingestion and readouts
• Triangulate MMM + experiments + platform signals
• Operate or co-own an MMM (in-house or vendor) and calibrate to holdouts; define decision rules (MMM for budgeting, experiments for validation, platform MTA for ops)
• Produce response curves and marginal dollar recommendations by channel / geo / audience; model payback windows (30-day to multi-year LTV) and saturation guardrails
• Wrangle multiparty data (imperfect by default)
• Join ad platform exports / APIs (Meta, Google, YouTube, TikTok, Snap, DV360 / TTD, affiliate / influencer), MMP data (AppsFlyer / Adjust / Branch), GA4 / GTM, and internal product / financial events
• Handle ID fragmentation, SKAN / ATT, cookie loss, missingness, and deduplication; document assumptions and data quality SLAs
• Ship decision-driving reporting : build exec-ready views (e.g., brand search, share of voice, qualified-visit rate, creative learning) tied to sign-ups, retention, and LTV
• Run source-health monitoring with forward projections and risk flags
• Evaluate and manage MMM vendors, GTM / analytics implementers, survey / brand trackers, CDPs, and clean-room partners; write SOWs, define success metrics, and QA their models / tags
• Make buy-vs-build recommendations and own integrations end-to-end

What you bring to the table :

Multiparty data fluency in the following :

Bonus points if you have :

Compensation, Benefits & Perks :

Why Join Quizlet?

Massive reach : 60M+ users, 1B+ interactions per week

Cutting-edge tech : Generative AI, adaptive learning, cognitive science

Strong momentum : Top-tier investors, sustainable business, real traction

Mission-first : Work that makes a difference in people's lives

Inclusive culture : Committed to equity, diversity, and belonging

We strive to make everyone feel comfortable and welcome!

We work to create a holistic interview process, where both Quizlet and candidates have an opportunity to view what it would be like to work together, in exploring a mutually beneficial partnership.

We provide a transparent setting that gives a comprehensive view of who we are!

In Closing :

At Quizlet, we're excited about passionate people joining our team-even if you don't check every box on the requirements list. We value unique perspectives and believe everyone has something meaningful to contribute. Our culture is all about taking initiative, learning through challenges, and striving for high-quality work while staying curious and open to new ideas. We believe in honest, respectful communication, thoughtful collaboration, and creating a supportive space where everyone can grow and succeed together."

Quizlet's success as an online learning community depends on a strong commitment to diversity, equity, and inclusion.

As an equal opportunity employer and a tech company committed to societal change, we welcome applicants from all backgrounds. Women, people of color, members of the LGBTQ+ community, individuals with disabilities, and veterans are strongly encouraged to apply. Come join us!

To All Recruiters and Placement Agencies :

At this time, Quizlet does not accept unsolicited agency resumes and / or profiles.

Please do not forward unsolicited agency resumes to our website or to any Quizlet employee. Quizlet will not pay fees to any third-party agency or firm nor will it be responsible for any agency fees associated with unsolicited resumes. All unsolicited resumes received will be considered the property of Quizlet.

#LI-FT

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.