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  • Software Engineer, Backend

Software Engineer, Backend

Tokyo, Japan

Mercari

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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.

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Position

Mercari's Backend Team is currently entering a major transition phase as part of the company's efforts to fulfill our mission of "creating value in a global marketplace where anyone can buy & sell”. The Mercari app has been growing at an incredible pace ever since its release and is now the largest C2C platform in Japan. The Mercari API codebase has also expanded in line with the service's growth and the variety of challenges faced. As we anticipate our service to grow at an even greater speed in the future, we are aiming to use microservices to help achieve Mercari JP's mission.

Although the Mercari API was designed and implemented as a monolithic API, we are working on migrating the API to microservices. This will allow us to divide responsibilities and make technological investments for a stronger system and organization capable of handling even greater expansion. Of course, we will continue to run our services as we implement these changes, and we aim to make daily improvements to provide an even better experience for our customers. Our backend engineers are expected to uphold the values “Go Bold” and “All for One” as they work to transform our systems and organization and contribute to our service's growth.

Mercari is looking for backend engineers who can work proactively and independently during the team's current stage, taking ownership over various discussions, developing features, providing spec feedback, and making technical decisions.


Responsibilities

  • Design, development, and operation of Mercari's API and web app using PHP and Go
  • Design, development, and operation of tools to support the customer support team and planning-related work
  • Design, development, and operation of various microservices making up the Mercari API
  • Lead the team's development

Your qualification

  • Strong understanding of the company mission and values
  • 5+ years back-end software development, or equivalent, experience
  • Experience with design, development, and operation of backend APIs using Go
  • Experience with software test including unit testing, functional testing, e2e testing
  • Experience with optimization of queries and data model design for the efficient usage of RDBMS and NoSQL databases
  • Cloud development experience (preferably GCP, or AWS)
  • Experience with team development using Git/Github or similar version management systems
  • Ability to design, develop and operate large-scale services in heavy traffic scenarios
  • Experience with project management and/or team leadership

Will be a plus

  • Developing and operating in a microservice architecture
  • Experience with on-call support for a service
  • Knowledge of web app security
  • Development using external APIs such as payment, delivery, etc.
  • Experience sharing and contributing to an OSS project
  • Experience with Scrum


Technical Environment

  • Languages: Go & PHP
  • Infrastructure: Dedicated servers, MySQL, memcached, Nginx, Elastic Search, Solr, Google Cloud Platform (Compute Engine, Kubernetes Engine, Spanner, Cloud SQL, Datastore, Storage, Stackdriver Logging, Dataflow, Pub/Sub, etc.)
  • Configuration management tool: Terraform
  • CI/CD: Circle CI / Spinnaker
  • Monitoring: Stackdriver Monitoring / PagerDuty / Datadog / Sentry / Mackerel / NewRelic / ELK Stack
  • Knowledge Tools: Confluence / Crowi
  • Other: GitHub / JIRA / Slack
  • Process: Scrum

What we offer

  • Health insurance
  • Incentive program
  • Employee stock ownership plan
  • Full transportation coverage
  • Visa support
  • Custom PC
  • Dual screen if needed
  • Company smartphone
  • New Employee Benefits at Mercari「mercibox」

Engineer Developer Software Backend Programmer Web PHP Back-end Software Developer AWS Amazon Go Cloud Git Software Engineer API Testing Database NoSQL Scrum Web Developer APIs Microservices google-cloud-platform GCP GitHub Back End RDBMS E2E Amazon Web Services Unit Testing Microservice Architecture Web Applications
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