Software Engineer, Backend - Merpay
Mercari, inc., Japan

JD in Japanese follows. JD

Circulate all forms of value to unleash the potential in all people

"What can I do to help society thrive with the finite resources we have?" The Mercari marketplace app was born in 2013 out of this thought by our founder Shintaro Yamada as he traveled the world. We believe that by circulating all forms of value, not just physical things and money, we can create opportunities for anyone to realize their dreams and contribute to society and the people around them. Mercari aims to use technology to connect people all over the world and create a world where anyone can unleash their potential.For more information about Mercari Group’s mission, see Mercari's Culture Doc.

Equal Opportunity Hiring

Here at Mercari, we work to realize a world in which no one’s potential is limited by their background and everyone has the opportunity to freely create value. We also firmly believe that a mindset of Diversity amp; Inclusion is essential for us to achieve our mission.

This, of course, extends to our hiring practices as well. Mercari is committed to eliminating discrimination based on age, gender, sexual orientation, race, religion, physical disability, and other such factors so that anyone who shares our mission and values can join us, regardless of their background. For more details, please read our Damp;I Statement.

Working at Merpay

Merpay is home to some of the greatest experts within Mercari Group. Our commitment to a culture of openness allows members to discuss architecture on Slack channels organized by business domain, send pull requests to each other on GitHub, and share knowledge on the internal Wiki. We hold Go Friday and other weekly study groups for engineers but open to all, encouraging engineers to help one another grow. Some members have no experience developing in Go before they join, but we help turn them into Go enthusiasts early on through involvement in our internal Go community and Gopher Dojo, our short-term, intensive training. Members further develop their expertise while demonstrating their abilities at both internal and external engineering community events.

• Handle microservice and API development in Go
• API/interface design for microservices using Protocol Buffers and gRPC
• Improving services and measuring effectiveness using quantitative and qualitative analysis on user behavior logs, etc.
• Design architecture and select middleware based on application requirements
• Microservice performance tuning, monitoring, and alert handling

• Programming languages: Go
• Infrastructure: Google Cloud Platform (Compute Engine, Kubernetes Engine, Spanner, Cloud SQL, Storage, Stackdriver Logging, Dataflow, Pub/Sub, etc.)
• Configuration management tools: Terraform
• Analysis Platform: BigQuery / Looker / Data Studio
• Monitoring: Stackdriver Monitoring / Datadog / PagerDuty / Sentry
• CI/CD: Circle CI / Spinnaker
• Knowledge Tool: Crowi / Confluence
• Other: GitHub / Slack
• Development Method: Agile (Scrum, Kanban, etc.)

• Shared belief in Merpay’s mission and values
• Knowledge and experience in web application development
• Experience designing schemas and creating efficient queries for databases (such as RDB, NoSQL, etc.)
• Experience operating web applications and conducting performance tuning, knowledge in security
• Experience selecting middleware and designing software architecture
• Ability to take ownership and lead the software development process

• Experience developing and operating using Go and GCP
• Experience developing and operating large-scale, high traffic system
• Experience establishing new services and tackling the challenges in the growth phase of a service
• Experience as developer lead or management / experience improving the development process
• Experience in statistical data analysis

• English: Proficient (CEFR - C1) preferred
• Japanese: Independent (CEFR - B2)
  * For details about CEFR, see here

• Mercari Introduces New Normal Work Style Your Choice
• The Journey From Engineer to Engineering Manager at Merpay
• Vol.65 @ ksoichiroGrowthPlatformBackend(only available in Japanese)
• Vol.64 @ genBackend(only available in Japanese)
• 0.1"" (only available in Japanese)
• (only available in Japanese)

Full-time

• Probationary period: First 3 months after joining the company. (During this period y

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