Software Engineer, Machine Learning & Search

About Mercari

We believe the world needs a place where people can exchange their loved goods. That’s why we built Mercari—to connect people who want to buy and sell things of emotional value through their mobile phones. Mercari has grown to become a leading community-powered marketplace that brings together millions of people every day.

Mercari Dev Meetups

Position

Remote work is also possible.

Mercari’s culture has been central to the company since our founding, with the three core values of Go Bold, All for One, and Be a Pro. In addition, the “Trust & Openness” value was introduced to embody our culture of mutual trust, where information remains transparent and rules are kept to a minimum. Regardless of how big Mercari gets, our culture is essential to achieving our mission and will be promoted throughout our organization.

Work Responsibilities

• Platform engineers for machine learning systems develop the functions and services of the marketplace app Mercari through the development and maintenance of infrastructure and platforms. Mercari is actively applying machine learning technology to provide a more convenient, safer, and more enjoyable marketplace. Machine learning platform engineers use the cloud and Kubernetes to operate and improve machine learning systems

Bold Challenges

• Develop libraries and frameworks to improve the availability of machine learning/search systems
• Improve the existing machine learning/search infrastructure and leverage industry-leading best practices to help the AI/search team operate
• Disseminate the best practices of machine learning/search engine operation, improve the development process, and improve the skills of engineers
• Develop and improve monitoring and logging systems for the evaluation of machine learning models/search experiments
• Collaborate with other teams to develop large-scale infrastructure

Your qualification

• Operating a web system
• Over 5 years of software development experience and over 3 years of Java, Python or Golang development experience
• End-to-end backend system development experience
• Basic knowledge and skills related to security, basic knowledge and troubleshooting skills related to RDBMS, SQL, network, Linux, monitoring system, logging, and operation
• Communication skills to carry out projects in collaboration with multiple teams and stakeholders

Will be a plus

• Developing and operating large-scale distributed systems (Kubernetes, Hadoop, etc.)
• Functional development and bug fixing skills necessary to improve system performance and reliability
• Using container technology such as Docker and Kubernetes
• Using the cloud (AWS, GCP, Microsoft Azure, etc.)
• Microservice development and operation experience with Docker and Kubernetes
• Using one or both of the following:
  • Machine learning: TensorFlow Serving, TensorFlow Lite, ONNX
  • Search: Elasticsearch, Solr or other OSS search engines

Language Requirements

• English: Business level
• Japanese: Conversational (preferred)

Related Articles

• Conversation between Machine Learning Engineers. Meet @ lain21 and @ chica #WeMakeMercari

What we offer

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 Location

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

• Scheduled working hours: 10 AM – 7 PM
• Currently, due to COVID-19 pandemic, we have introduced a full-flex system without core time to increase the choice of working hours and allow for more flexible working styles (*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 installments (monthly)
• Based on skills, experience, and abilities
• Reviewed twice a year

Benefits

• Complete health and social insurance
• Incentive program
• Support systems, including those that benefit employee family members
• Language learning support
• Translation/interpretation support
  *See this page for details

Additional details

Media

Corporate Sites

• Mercari, Inc.
• Souzoh, Inc.
• Mercari US

Owned Media

• Mercari Careers
• Mercari Engineering Portal
• Mercan - Introduces the people that make Mercari
• Mercari US Careers
• Mercari US Blog