Responsibilities
Work Responsibilities
- Leverage data science and machine learning techniques to identify business challenges, develop and implement models, and enhance productivity and reliability through continuous improvement.
- Propose and prioritize key issues for resolution, focusing on medium to long-term business objectives and impact.
- Formulate hypotheses, design evaluation strategies, and develop suitable machine learning models using a data-driven approach.
Specific responsibilities:
- Develop and maintain machine learning models for the advertising domain, including recommendation systems, matching optimization, ad classification, etc.
- Apply statistical and data science techniques to uncover product insights and drive business logic-based optimizations.
- Utilize image and text embeddings to enhance the performance of advanced machine learning models.
- Design time series models to evaluate advertising effects and optimize ad spending strategies.
Unique and Bold Challenges
- Drive impact for over 20 million monthly active users (MAUs) through machine learning-based advertising solutions
- Ads business is Mercari's third revenue pillar and is poised to significantly influence the Japanese advertising market
- Utilize extensive product, fintech, and user behavioral data to tackle predictive modeling challenges and generate substantial business impacts
- Develop models with a focus on business impact and user experience (UX), not just accuracy. Engage in creating high-quality products with machine learning as a core competency.
- Participate in the entire lifecycle of machine learning products, from planning and proposal to development and deployment.
Qualifications
Required Skills
- Shared belief in the mission and values of Mercari Group and its various companies
- Programming skills in SQL and Python
- Deep understanding of the fundamentals of machine learning and software engineering
- Experience building models using machine learning libraries such as scikit-learn and LightGBM (1+ years)
- Begineer to Intermediate knowledge of statistics and data science
Preferred Skills
- Experience in advertising domain or advertising platform
- Strong mindset towards product engineering
- Experience developing ML systems using large-scale datasets
- Familiar with cloud platforms such as AWS, GCP, or Microsoft Azure
- Understanding of machine learning model serving and deployment in production environments
Screening Criterias:
- Ability to develop output hypotheses for a given topic using data driven mindset.
- Familiarity with multiple methods and the ability to select and combine the appropriate ones according to the project.
- Exhibit strong communication skills and ability to lead projects collaborating with multiple teams and stakeholders.
- For more details, please see this page.
Language Requirements
- English: Independent (CEFR - B2)
- Japanese: Independent (CEFR - B2) preferred
- For more details about CEFR, please see
About the Company
Circulate all forms of value to unleash the potential in all people
"What can I do to help society thrive with the finite resources we have?" The Mercari marketplace app was born in 2013 out of this thought by our founder Shintaro Yamada as he traveled the world. We believe that by circulating all forms of value, not just physical things and money, we can create opportunities for anyone to realize their dreams and contribute to society and the people around them. Mercari aims to use technology to connect people all over the world and create a world where anyone can unleash their potential.For more information about Mercari Group’s mission, see Mercari's Culture Doc.
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.
Working Conditions
Employment Status
Full-time
- Probationary period: First 3 months after joining the company. (During this period your contract conditions will be the same as that of a permanent employee.)
Office
Roppongi
- Smoking is prohibited within our offices
- Mercari has introduced a work style policy called “Your Choice.” Each member is free to choose whether they want to work in the office or work fully remote. *Exceptions made for certain kinds of work.
Work Hours
- Full flextime (no “core time” or “flex time”)
*Does not apply to all positions
Holidays
- Two days off per week (as well as national holidays, New Year's break, etc.)
- Paid leave, congratulatory and bereavement leave, relax days, sick leave
Salary
- Annual salary paid in 12 monthly installments (including fixed overtime allowance)
- Based on skills, experience, and abilities
- Reviewed twice a year
Benefits
- Complete health and social insurance
- Incentive program
- Support systems, including those that benefit the employee’s family members
*See this page for details.
Support
- Relocation support
- Language learning support
- Translation/interpretation support
*See this page for details.
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.