Senior Growth Data Analyst/Scientist, US App

• From Profitability to Double-Digit GMV Growth: Inside Mercari US’s Diverse Team
• Through the Eyes of Two VPs: From Profitability to Entering a New Growth Phase

Work Responsibilities

• Strategic Advisory & Insight Discovery: Proactively identify trends and anomalies in complex datasets. Translate these findings into high-impact recommendations for senior stakeholders, moving beyond reporting to actively shaping the growth.
• End-to-End Project Ownership: Independently manage the full analytics lifecycle-from defining the business problem and gathering requirements to data cleaning, modeling, and final delivery.
• Advanced Data Modeling & Architecture: Design, build, and maintain sophisticated data models and automated dashboards that serve as single sources of truth for the organization.
• Stakeholder Partnership: Act as the primary point of contact for cross-functional teams (Product, Marketing, Ops). Distill technical complexities into clear, actionable narratives for non-technical audiences.
• Process Automation & Optimization: Identify and automate repetitive data tasks using SQL and Python etc. Champion best practices for data governance, documentation, and code efficiency.

Unique Challenges

• Cross-Domain Adaptability: Navigate and integrate complex data streams across diverse business functions such as shipping logistics, payment processing, product development, and marketing. This role requires the flexibility and curiosity to continuously master new operational domains and synthesize overarching business insights.
• Autonomy and Bias for Action: Operate independently within a fast-paced, highly ambiguous environment. You will be expected to proactively identify critical business problems, independently design analytical frameworks, and execute data-driven solutions with minimal oversight or predefined project scoping.
• Strategic Cross-Functional Leadership: Partner effectively with stakeholders across Product, Marketing, Operations, and Finance, often reconciling competing priorities and disparate data sources. This requires the ability to distill complex analytics into accessible narratives and influence strategic, cross-departmental decision-making without relying on direct organizational authority.

• Required Experience/Skills
• At least 7 years experience working in Data Analytics with large-scale data processing tools (SQL, Python etc)
• Strong track record in growth, marketing, and direct business impact, with a willingness to explicitly own business impact.
• Solid understanding of statistics, experimental design, and causal reasoning
• Preferred Experience/Skills
• Prior work experience in a C2C marketplace or in a similar domain.
• Experience with ML frameworks(e.g., scikit-learn, XGBoost, LightGBM, TensorFlow, or PyTorch)
• Familiarity with ML deployment and monitoring in production systems
• Experience with both RDBMS and NoSQL databases, as well as exposure to backend engineering practices (e.g., microservices, Go, gRPC) and cloud platforms.
• Proven experience applying machine learning to real, user-facing decisions and production environments.
• Language
• Japanese: Preferred
• English: Required

Mercari Engineering Principles are a shared understanding that serves as the foundation of engineering beliefs and behavior at Mercari. The Engineering Principles are designed to complement the organizational identity (Mercari’s mission, values, and culture) from an engineering viewpoint.

These principles ultimately help us achieve Mercari’s mission by defining the ideal state we seek to realize in the long term.

• Passion For The Product
• Grow Together
• Solve Through Mechanisms
• Collaborate Openly, At Mercari Group, we value empathizing with and embodying the mission and values of the Group and each company. To promote the creation of an organization that maximizes the total amount of value exhibited by all members, we would like to understand the experience and skills of each candidate as accurately as possible.

Recruiting cycle at Mercari Group

• Application screening
• Skill assessment: For engineering positions, you will be asked to complete a skill assessment on HackerRank or GitHub. For non-engineering positions, you may be asked to complete an assessment depending on the position. (The timing of the assessment may coincide with the interview process.)
• Interview: The number of interviews may vary depending on the position.
• Reference check: We will ask for online references around the timing of the final interview.
• Offer: Offers will be determined carefully in consideration of the final interview and the reference check.

Learn more about our recruiting process here.

Equal Opportunity Hiring

Here at Mercari, we work to realize a world in which no one’s potential is limited by their background and everyone has the opportunity to freely create value. We also firmly believe that a mindset of Inclusion & Diversity is essential for us to achieve our mission.

This, of course, extends to our hiring practices as well. Mercari is committed to eliminating discrimination based on age, gender, sexual orientation, race, religion, physical disability, and other such factors so that anyone who shares our mission and values can join us, regardless of their background. For more details, please read our I&D statement.

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About Mercari

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