Software Engineer, Backend (foundation) - Mercari Marketplace at Mercari, inc.

Minato, , Japan -

Full Time

Start Date

Immediate

Expiry Date

15 Oct, 26

Salary

0.0

Posted On

17 Jul, 26

Experience

2 year(s) or above

Remote Job

Yes

Telecommute

Yes

Sponsor Visa

Skills

Go, Backend Development, Google Cloud Platform, SQL, Relational Databases, API Design, Distributed Systems, Microservices, gRPC, Protocol Buffers, Kubernetes, Cloud Spanner, CloudFlare Streams, Amazon S3, Amazon SES, On-call Operations

Industry

Software Development

Description

本ポジションは日本語JDの用意がありません。 Software Engineer, Backend (foundation) - Mercari Marketplace Employment Status: Full-time Work Hours: Full Flextime (no core time) Office: Roppongi For more details, see the Overview of Our Positions section on our Careers site. About Mercari 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 Organization/Team Mission Mercari Engineering Principles Mercari Engineering Principles are a shared understanding that serves as the foundation of engineering beliefs and behavior at Mercari. The Engineering Principles are designed to complement the organizational identity (Mercari’s mission, values, and culture) from an engineering viewpoint. These principles ultimately help us achieve Mercari’s mission by defining the ideal state we seek to realize in the long term. Passion For The Product Grow Together Solve Through Mechanisms Collaborate Openly For more details, please see the following link: Engineering Culture The Foundation Backend team builds and operates the core business services that nearly every part of Mercari depends on, including notifications, user settings, and media.. These are high-throughput, business-critical systems written in Go on Google Cloud Platform. Our work ranges from day-to-day reliability and support of these services to large company initiatives such as platform globalization, growth-related initiatives, marketing campaign improvements, enabling agentic SaaS-like experience for core services, and modernization and rearchitecturing of legacy systems. We keep the foundation stable, scalable, and evolving so product teams can move quickly on top of it. See here for more information about our mission and values. Work Responsibilities Develop, maintain, and operate backend services in Go across the Foundation domain (notifications, user attributes, media). Investigate and resolve operational support and inquiry tickets raised by internal teams and Customer Support, improving reliability and reducing recurring toil. Join the on-call rotation after onboarding to support incident response for Foundation services. Contribute to platform initiatives such as the global rollout, growth-related initiatives, campaigns, enabling agentic SaaS-like experience for core services, modernization and rearchitecturing of legacy systems, and more. Write tests and documentation, and participate actively in code reviews. Proactively identify improvement opportunities in the team's services, code, and operational processes, and drive them through to implementation. Unique Challenges Foundation services are used by almost all of Mercari; changes demand strong attention to reliability, scale, and backward compatibility. Balancing a meaningful operational/support load alongside feature and migration work requires good prioritization and communication. Contributing to a large-scale data migration that touches core user and notification data. Operating core services at very high volume such as notifications across various types and channels (InApp, push, email, SMS/Voice), where fan-out, delivery reliability, all have to load up under load. Working across several distinct domains and maintaining enough operational familiarity with each service to support and run all of them. Qualifications Required Experience/Skills Backend software development experience (Go preferred; strong experience in another server-side language with the willingness and ability to learn Go). Solid understanding of designing, building, and operating web services / APIs. Familiarity with relational databases and SQL. Experience working in a cloud environment (GCP preferred) with containerized deployments. Operations experience with on-call and customer support. Preferred Experience/Skills Experience with distributed systems and microservices at scale. Experience with messaging/notification systems (push, email, SMS). Exposure to Google Cloud Spanner or large-scale data migrations. Experience with gRPC / Protocol Buffers and Kubernetes. Experience with CloudFlare Streams/Images. Experience with Amazon S3 and SES. Language Japanese: Welcomed but not required English: Business-level, working proficiency For details about CEFR, see here. Learn More About Mercari Group Careers site: https://careers.mercari.com/en/ Mercan: https://mercan.mercari.com/en/ Social media: X / Linkedin Recruiting at Mercari At Mercari Group, we value empathizing with and embodying the mission and values of the Group and each company. To promote the creation of an organization that maximizes the total amount of value exhibited by all members, we would like to understand the experience and skills of each candidate as accurately as possible. Recruiting cycle at Mercari Group Application screening Skill assessment: For engineering positions, you will be asked to complete a skill assessment on HackerRank or GitHub. For non-engineering positions, you may be asked to complete an assessment depending on the position. (The timing of the assessment may coincide with the interview process.) Interview: The number of interviews may vary depending on the position. Reference check: We will ask for online references around the timing of the final interview. Offer: Offers will be determined carefully in consideration of the final interview and the reference check. Learn more about our recruiting process here. 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 Inclusion & Diversity 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 I&D statement. Please read and acknowledge our Privacy Policy prior to submitting your application.

Responsibilities

Develop and operate high-throughput backend services in Go for core domains such as notifications, user attributes, and media. Drive platform initiatives including globalization, system modernization, and the resolution of operational support tickets.