Trust & Safety Specialist - Mercari Marketplace (Commerce New Service)
ð¯ðµ Japan
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Trust & Safety Specialist - Mercari Marketplace (Commerce New Service)
from ð¯ðµ Japan
JD in Japanese follows. è±æã®åŸã«åæJDãã芧ããã ããŸãã
Trust & Safety Specialist - Mercari Marketplace (Commerce New Service)
- Employment Status:ãFull-time
- Work Hours: Full Flextime (no core time)Â Â
- Office: Roppongi
For more details, see theOverview of Our Positions section on our Careers site.
About Mercari
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 Groupâs mission, seeMercariâs Culture Doc
Organization/Team Mission
Mercari is evolving its marketplace by introducing new, dynamic, and interactive user experiences that enable more immediate and engaging transactions between users. As part of this effort, the Trust & Safety team plays a critical role in ensuring that these emerging surfaces remain safe, trustworthy, and scalable.
This position will focus on building and operating risk mitigation frameworks for rapidly evolving user behaviors, working closely with cross-functional teams to proactively identify risks and enable safe product growth.
Work Responsibilities
- Monitor and identify abuse patterns in real-time or near real-time user interaction environments, and respond quickly through data analysis and operational insights
- Design and continuously improve scalable operational workflows and playbooks to handle time-sensitive risk scenarios and high-volume user interactions
- Collaborate closely with Product, Engineering, and Operations to design and implement risk mitigation strategies aligned with new product features and user experiences
- Drive end-to-end execution from risk identification to solution deployment, including rule design, workflow optimization, and tooling improvements
- Triage and make decisions on sensitive or high-risk cases, balancing platform safety and user experience under time constraints
- Design and optimize monitoring coverage and operational readiness based on risk levels and workload fluctuations (including resource allocation and prioritization)
- Actively engage in operational handling when needed, bringing hands-on insights to drive continuous improvements
- Improve detection accuracy and operational efficiency through data-driven iteration, including leveraging automation and semi-automated solutions
- Contribute to policy refinement and enforcement strategies to address newly emerging behaviors and edge cases
Unique Challenges
- Build Trust & Safety frameworks for new and evolving marketplace experiences where user behavior changes rapidly in real time
- Operate in a highly ambiguous, fast-paced environment and establish risk mitigation and operational models from scratch (0â1 phase)
- Balance speed, scalability, and user experience while maintaining a high standard of platform safety
- Work cross-functionally to influence both product design and safety mechanisms simultaneously
Qualifications
- Required Experience/Skills
- Empathy with Mercari Groupâs mission and values
- Experience in Trust & Safety, Risk Operations, or Anti-abuse domains
- Proven ability to make sound decisions in high-volume, time-sensitive, or ambiguous situations
- Experience collaborating with cross-functional teams (Product, Engineering, Operations, etc.)
- Strong problem-solving skills with a data-driven mindset
- Preferred Experience/Skills
- Experience in online marketplaces, social platforms, or user-generated content services
- Experience in highly interactive or real-time environments (e.g., live features, chat platforms, gaming, streaming services)
- Experience in content moderation, monitoring, or real-time review operations
- Experience handling incidents or conducting rapid response to policy violations or abuse
- Experience designing operational workflows, playbooks, escalation frameworks, or coverage models
- Familiarity with data analysis tools such as SQL or BigQuery
- Experience contributing to policy development or rule design
- LanguageÂ
- Japanese: Proficient (CEFR â C1) required
- English: Basic (CEFR â A2) preferred
For details about CEFR, seehere. ã
Learn More About Mercari Group
- Careers site:https://careers.mercari.com/en/Â Â Â
- Mercan:https://mercan.mercari.com/en/Â Â
- Social media:X /LinkedinÂ
Recruiting at Mercari
At Mercari Group, we value empathizing with and embodying the mission and values ââof 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.
ãLearn more about our recruiting processhere.
Equal Opportunity Hiring
Here at Mercari, we work to realize a world in which no oneâs 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 ourI&D statement.
Please read and acknowledge ourPrivacy Policy prior to submitting your application.
Trust & Safety Specialist - Mercari Marketplace (Commerce New Service)
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