mercari AI

People

The specialized team driving our AI technolgy

mercari

  • Engineering Manager

    Adam Malowiecki

    • Data Engineering
    • Infrastructure
    • MLOps

    Adam is an Engineering Manager working on the Mercari ML platform. He has had experience at startups in Australia as a Data Engineer and ML consultant mostly in the finance and legal sectors. He is interested in Machine Learning operations and cloud infrastructure. His goal is to create a best practice ML operations team and world-class ML platform.

  • EdgeAI Engineer

    Chica Matsueda

    • EdgeAI
    • iOS
    • MLOps

    Chica has worked as a game programmer and AI development consultant before joining Mercari. She has experience working as an MLOps Engineer for AI services, and currently works on EdgeAI technology to bring AI working on low-spec devices such as smartphones.

  • Engineering Manager

    David Cournapeau

    • Audio
    • Python

    Cournapeau has a background in Machine Learning, with a PhD in the domain of speech recognition. He has more than 15 years of experience working at the interface of software engineering and science. In the last 4 to 5 years, he moved into a leadership role to help organizations improve their products through data and Machine Learning.

    He used to be a core contributor to NumPy and SciPy, and was a regular speaker to python conferences, including as a keynote speaker in PyCon Colombia and PyCon Thailand.

  • ML Engineer

    Jie Yang

    • Causal Inference
    • Computer Vision
    • Marketing Strategy

    Jie joined Mercari as a ML Engineer in 2019. Her work is to support marketing strategies by Machine Learning to meet customer satisfaction and make marketing efforts efficient. Currently she is working on optimizing coupon distribution strategies by applying uplift modeling. Her research domain was computer vision at her master stage and she published papers on CVPR and ICCV. Check out her google scholar page here.

  • Engineering Manager

    Kazuaki Hiraga

    • NLP
    • OSS
    • Search

    Kazuaki has been working on the enterprise search platform, search engines, and Natural Language Processing libraries. Currently he works as an Engineering Manager for the Search feature team to improve search quality and user experience. He also works on the Lucene related open source projects.

  • Engineering Manager

    Keisuke Umezawa

    • Finance
    • OSS
    • Times Series

    Keisuke is a Software and ML Engineer with experience in financial modeling and recommendation engine development at web companies and Fintech startups. He is currently involved in multiple teams as an Engineering Manager. He is and was also involved in the development of OSS for deep learning frameworks and hyperparameter optimization, and as an evangelist, he strives to popularize the libraries.

  • Engineering Manager

    Kenta SHIMADA

    • Go
    • Item Moderation
    • Multimodal
    • Python

    Kenta joined Mercari in September 2018 as a Tech Lead for the Backend teams and currently Engineering Manager at Customer Reliability Engineering Camp. At the team, he is managing a feature team where Backend and ML Engineers belong. Before Mercari, he worked as a full stack engineer in the US and Japan for more than 10 years.

  • Engineering Manager

    Pablo Bordons Estrada

    • Computer Vision
    • Data Science
    • Experimentation

    Pablo is a Data Scientist and Engineering Manager in the ML Price Team, currently focusing on helping our users to successfully sell their items in Mercari. Other than price he has worked around data related topics and features such as Image Search. Before joining Mercari he was working as a Deep Learning Researcher in the field of edge AI, where he investigated quantization, compression, and other techniques in order to bring computer vision models into FPGAs. Before that he worked in the gaming industry as a Data Scientist, focusing on behavioral analysis, monetization, and data design.
    He is first and foremost passionate about data: from behavioral analysis to online experimentation and optimization, going through all steps in the data generation process such as schema definition.

  • Engineering Manager

    Reggie Lai

    • Search
    • Statistical Machine Learning
    • Text Mining

    15+ years of experience in developing software/web services of information retrieval, such as text search, keyword extraction and spam filter, as a Software Engineer and Engineering Manager. Passionate about AI technology and building data-driven applications assisted by Machine Learning techniques.

  • Search engineer

    Shi Qian

    • Deep Learning
    • NLP
    • Search

    QIAN is a Software and ML Engineer in Mercari search team. He mainly focuses on search quality evaluation, search relevancy improvement and query intent understanding. As a ML Engineer, he uses different ML algorithms (GBDT, BERT, and etc.) to model user behaviors and seek possibilities of improving search quality. Basically he is working on all tasks of the search A/B experiment pipeline: Modeling -> Implementation -> AB test -> Data analysis and judge -> Release.

  • Director of AI & Search

    Shunya Kimura

    • NLP

    Shunya has extensive experience developing recommendation engines and graph mining engines in a social platform, as well as adtech and marketing data development using natural language processing. Since 2017, he has been the Director in areas around Artificial Intelligence and Search Engines at Mercari.

  • ML Engineer

    Shunya Ueta

    • MLOps
    • Python
    • Search

    Shunya joined Mercari as a ML Engineer in February 2018. His first work is to improve the existing Machine Learning based content moderation system. This project result was accepted by OpML’20. Currently, He is working on optimizing ranking logic to improve the search experience for customers. He privately organizes the MLOps community which mainly discusses how to apply Machine Learning in the real world.

  • Tech Lead

    Suganprabu Nagarajan

    • Go
    • Multimodal
    • Python

    Suganprabu joined Mercari in October 2018 as a new graduate. He started his career in Machine Learning, to detect counterfeit items in the Mercari US marketplace. He moved to Mercari Japan and worked on content moderation using Machine Learning. Currently he works as the Tech Lead of the Trust and Safety team, which is a feature oriented team working on Machine Learning, backend and frontend projects to make Mercari a safe marketplace for our customers.

  • Engineering Manager

    Takeshi Matsumoto

    • Data Science
    • Marketing Strategy
    • Statistical Machine Learning
    • Times Series

    Data Science Specialist with over 20 years experience in making business strategy, developing a machine learning algorithm from large data sets. Clarify customer decision-making mechanisms and insights using advanced statistical models and formulate new marketing strategies.

  • Software Engineer

    Tomohiro Furusawa

    • Library Information Science
    • Personalization
    • Recommendation
    • Search

    Tomohiro has worked at a human resources company as a data scientist, and tackled on scale-up of existing services and establishing new business at the company, then he has been engaging in product development for Information Retrieval and Recommender Systems. He joined Mercari in 2019 and has worked on information access evaluation. After that, he started a recommendation team as a PM, and is now promoting R&D in the team as a Scrum Master and Software Engineer.

  • ML engineer / Tech Lead

    Yuji Oshima

    • EdgeAI
    • Go
    • MLOps
    • OSS

    Yuji joined Mercari in July 2019 as a SysML Engineer and he is currently a Tech Lead at EdgeAI team. In the team, he leads the development of features that perform Machine Learning inference on mobile apps and browsers. Before joining Mercari, he focused on OSS development, where he developed Docker and launched and led the development of KubeFlow/Katib.

  • ML Engineer / Backend Engineer

    Yusuke Shido

    • Deep Learning
    • Multimodal
    • NLP

    Since joining in 2019 Yusuke has been working on a Machine Learning model and backend development in the Customer Reliability Engineering field, such as violation detection systems. Since then he now handles data analysis and implementation for a team that finds tasks and develops solutions in quick iterations. He has been part of a research and development startup while still in school, and is good at coming up with solutions for difficult problems and tasks.