Introduction
Our Mission
Building trust for a seamless society. We challenge ourselves daily to achieve this mission. Merpay's business started as a payment service, but that was just our first step towards achieving the mission we envision. We want to create a society where anyone can realize their dreams through a new ecosystem centered not only on this payment service, but on credit. Let's work together to update society's deinition of "payment," "credit," and society itself.
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, the culture will remain essential to achieving our mission and is evidenced throughout our organization.
Position Overview
Position Overview
Background
As Mercari continues to become a rising platform in the market attracting up to 100 million users, Merpay has laid out its mission to provide new value to customers on top of what Mercari already offers.
The ID Platform team is a dedicated team who provide the authentication and authorization platform for both Mercari JP and Merpay.
As a software engineer in the ID Platform team, you will support Mercari Group’s growth with not only skills in the backend domain, but also expertise in authentication and authorization domain.
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.
Job Description
Handle authentication and authorization platform development in Go
Providing authentication and authorization-related solutions to teams/projects across the whole Mercari group.
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
Bold Challenges
You will be able to work on a large-scale authentication and authorization platform that supports the huge customer base for both Mercari’s flea market and Merpay’s FinTech business. The platform is both internally and externally critical. It will not only support the internal microservices but also used by our partners for system integration purposes.
This platform is built on our own. You will tackle difficult security and user experience problems along with your expertised team members.
You will dive into the deep ocean of OAuth 2, OpenID Connect, working with your team to renew the legacy authentication feature in a monolithic service by creating new microservices following the OpenID Connect standard.
During the process of designing and building the platform, you can gain a deep insight into related RFCs and Internet Drafts.
You will work in a super diverse team with teammates from more than 8 countries and areas to support other teams who use both Japanese and English.
Required Conditions
Shared belief in Merpay’s mission and values
Knowledge and experience in web application development
Enthusiasm in solving problems in authentication and authorization domain
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
Preferred Experience
Experience in authentication and authorization development
Expertised knowledge in OAuth 2, OpenID Connect and other well-known auth schemes.
Experience developing and operating using Go, PHP, 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
Screening Criteria
Desire to use technology to push the finance industry forward
Ability to collaborate with members from diverse backgrounds to take on goals
Ability to continuously grow alongside teammates, without becoming complacent or satisfied with the status quo
Ability to resolve the organization’s challenges through excellent communication skills
Strong willingness to solve problems in authentication and authorization domain.
We want to get a thorough understanding of your experience and skills by asking interview questions about specific situations, tasks, actions, and results (STAR)
*Checkhere for more details
Technical Assessment Criteria
You will be working on a small backend project for 1 week.
It may take you around 8 hours to finish, though it depends on your experience.
You can choose Go or Java assessment.
Through your technical assessment, we would like to see if you are the engineer we want to work together with, including but not limited to the following points:
If your code is production ready.
If your codebase is easy for others to commit or take over.
If you or others can easily find the improvement points and work on them.
Language Requirements
English: Business level
Japanese: Business level (optional)
Related Articles
1st party client??OpenID Connect??? (Only available in Japanese)
WebAuthn????? | ???????????? (Only available in Japanese)
OAuth2?????????????????GNAP????? (Only available in Japanese)
The Merpay Backend Team looks for understanding and enthusiasm over expertise #WorkWithMerpay | Mercan (Only available in Japanese)
Working Conditions
Employment Status
Full-timeProbationary 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
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/interpretationsupport
*See this page for details.
Media
Corporate Sites
Mercari, Inc.
Mercari US
Owned Media
Mercari Careers
Mercari Engineering Portal
Mercan - Introduces the people that make Mercari
Mercari US Careers
Mercari US Blog
