Tokyo, JP

Software Engineer, Flutter [Merlogi]


Our Mission

Mercari is a Japan-based company with the mission of “create 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

  • Merlogi, Inc. is a Mercari Group company established on October 28, 2021, with the mission of “Relaying value far and wide for kinder living.” With our unique data and technology, we aim to provide logistics services kinder to all people involved and to society as a whole. We’re working to expand Mercari Posts and other Mercari touchpoints to more locations and build a package pickup distribution network, creating an even better experience for Mercari’s more than 20 million monthly users.

  • The main components of the role are as follows:

    • Understanding of full product development cycle of Flutter

    • Develop multi-platform applications for iOS and Android using Flutter

    • Build user interfaces designed by our user interface team

    • Integrate internal and external APIs

  • Depending on your motivation and ability, there are opportunities to be involved in web, backend and mobile application development. In addition to your core skills.

Bold Challenges

  • We are looking for people that are interested in our services, mission, and values, and want to work where engineers can go bold, use the latest technology, make autonomous decisions, and take on challenges at a rapid pace.

Required Experience

  • Shared understanding and belief in our company’s mission and values

  • Good communication and interpersonal skills with the ability to collaborate with multiple stakeholders

  • Developing, operating, making decisions when selecting technology, and continuous improvement of large-scale product codebases

  • Ability to design and develop with performance and scalability in mind

  • Experience with Building Flutter application for Android or iOS

  • Solid understanding of mobile development

Preferred Experience

  • Project management and/or team leadership

  • Cloud development experience (preferably GCP or AWS)

  • OSS contribution experience / familiarity with the OSS community

  • Android or iOS development experience

  • Experience working for backend and frontend

Screening Criteria

  • Check here for more details

Technical Assessment Criteria

  • Github based project that will take 2-3 hours to complete.

Language Requirements

  • English: Independent (CEFR – B2) or Japanese: Independent (CEFR – B2)

  • Click here for more information about CEFR

Related Article

  • What makes a truly strong “organization and person”

Working Conditions

Employment Status


  • 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.)



  • 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)


  • 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


  • Annual salary paid in 12 monthly installments (including fixed overtime allowance)

  • Based on skills, experience, and abilities

  • Reviewed twice a year


  • 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.


  • Relocation Support

    *See this page for details.

About Mercari

About Mercari Mercari is a marketplace app that makes it easy for people to safely sell and ship their things. Launched in 2013, the Mercari app has been downloaded over 100M times in Japan and the US. It's now among the largest peer-to-peer selling platforms globally. From fashion to toys, shoes to electronics and beyond, Mercari's mission is to create value in a global marketplace where anyone can buy and sell. Our Values (Go Bold, All for One, Be a Pro) We work together to create a global marketplace, but the road to this goal is by no means easy. In order for us to make new innovations and take on new challenges that no one has taken before, all of us take ownership of our work and make use of our knowledge so that we can create the best product possible as one team. To achieve this, we all take action based on our three company values (Go Bold, All for One, and Be a Pro).