Software Engineer, Machine Learning & Search

Our Mission

• Mercari is a Japan-based company with the mission of “creating value in a global marketplace where anyone can buy & sell.” Having continuously worked toward this goal since our founding in 2013, we are now transforming from a startup into a global player. While this transformation brings its own specific set of challenges, we believe that solving them one after another will allow us to fully achieve our mission. Are you interested in working together to take on these exciting challenges?

Our Culture

• 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.

Position Overview

Work Responsibilities

• Platform engineers for machine learning/search 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/search technology to provide a more convenient, safer, and more enjoyable marketplace. Machine learning/search platform engineers use the cloud and Kubernetes to operate and improve machine learning/search 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

Required Experience

• 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
• Preferred Experience
• 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
• 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
• 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 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 employee family members
• Language learning support
• Translation/interpretation support