Senior Data Scientist, Product

About this team and role: The Senior Data Scientist will lead analytical support for a feature area to drive measurable user growth by framing ambiguous questions, designing measurement strategies, and delivering insights that shape product decisions. They will also contribute to the team’s forecasting and growth modeling efforts, helping translate statistical models into actionable growth strategies. This role emphasizes judgment, communication, and influence, supported by strong technical execution.

What you’ll do:

Own the analytical success for a feature area by defining north-star metrics, building datasets, establishing measurement strategies, and driving data-driven decisions

Provide deep-dive and root-cause analyses to guide feature development, such as understanding what’s driving a metric change or opportunity sizing of new features

Design and analyze experiments to understand feature impact, user behavior, and causal relationships

Design measurement plans to evaluate new growth initiatives and validate assumptions over time

Contribute to the team’s statistical forecasting models and help translate model outputs into actionable growth plans

Sit at the intersection between product, engineering, and leadership to advise, influence, support, and implement our product decisions

Cultivate a culture of measurement and advocate for strong analytical standards and methodologies across the organization

What you’ll bring:

6+ years of experience in data science, analytics, or applied quantitative analysis, with a track record of influencing business decisions through data

Advanced proficiency in SQL and Python for analysis, modeling, and validation

Background in experimentation (A/B testing) and causal inference for product development

Familiarity with time-series forecasting or statistical modeling techniques

Experience communicating models and findings to senior leadership and cross-functional partners

Ability to operate effectively in fast-paced environments with multiple viable options, delivering directional insights with clear rationale

Commitment to our values:

Being relationship-minded

Having grit

What you’ll get:

Generous performance-based bonus plans to all eligible employees – we share in our success as one team

Rich medical, dental, and vision coverage

Generous retirement contributions with 100% immediate vesting (regardless of whether you contribute)

Quarterly all-company wellness days where everyone takes a pause together

Country specific holidays plus a day off for your birthday

One-time home office stipend

Quarterly well-being stipend

Considerable paid parental leave

Employee referral bonus program

Other benefits (life/AD&D, disability, EAP, etc. varies by country)

Commitment to diversity, equity, inclusion, and belonging Mozilla understands that valuing diverse creative practices and forms of knowledge are crucial to and enrich the company’s core mission. We encourage applications from everyone, including members of all equity-seeking communities, such as (but certainly not limited to) women, racialized and Indigenous persons, persons with disabilities, persons of all sexual orientations, gender identities, and expressions.

We will ensure that qualified individuals with disabilities are provided reasonable accommodations to participate in the job application or interview process, to perform essential job functions, and to receive other benefits and privileges of employment, as appropriate. Please contact us at hiringaccommodation@mozilla.com to request accommodation.

We are an equal opportunity employer. We do not discriminate on the basis of race (including hairstyle and texture), religion (including religious grooming and dress practices), gender, gender identity, gender expression, color, national origin, pregnancy, ancestry, domestic partner status, disability, sexual orientation, age, genetic predisposition, medical condition, marital status, citizenship status, military or veteran status, or any other basis covered by applicable laws. Mozilla will not tolerate discrimination or harassment based on any of these characteristics or any other unlawful behavior, conduct, or purpose.

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