Product Engineer, Backend - Mercoin

A Japanese marketplace app company that enables value circulation through their C2C platform, with over 23 million monthly users.
Minato City, Tokyo, Japan
Backend
Mid-Level Software Engineer
Hybrid
1,000 - 5,000 Employees
3+ years of experience
Finance · Blockchain

Description For Product Engineer, Backend - Mercoin

Mercari is seeking a Backend Product Engineer for their Mercoin team, focusing on cryptocurrency and blockchain services. The role involves developing and maintaining the core backend systems for cryptocurrency trading and user management functions. The team is responsible for building Bitcoin trading services that already serve over 3 million customers, making it a significant player in an industry with approximately 10 million users total.

The position offers unique challenges, including the opportunity to provide new cryptocurrency-related features to Mercari's 23 million monthly active users. The team leverages distinctive advantages such as integration with Mercari's payment system and a verified user base of over 14 million customers. Working in a flexible environment with modern technology stack including Go, GCP, and various cloud services, you'll collaborate with product managers and trading teams to directly impact product growth.

The role requires strong technical expertise in web application development, database design, and microservices architecture. You'll be working with cutting-edge technologies like Protocol Buffers, gRPC, and various GCP services. The ideal candidate should have experience with high-traffic systems and a passion for cryptocurrency/blockchain technology.

This is an excellent opportunity for engineers interested in being at the forefront of financial technology innovation, working on large-scale systems that have real impact on millions of users. The position offers flexible working arrangements and the chance to work with a modern tech stack in a company that values engineering excellence and innovation.

Last updated 7 days ago

Responsibilities For Product Engineer, Backend - Mercoin

  • Development and operation of Bitcoin trading services
  • Web application development and API development using Go
  • Interface design between microservices using Protocol Buffers + gRPC
  • Service improvement through quantitative and qualitative analysis of user behavior logs
  • Architecture design and middleware selection based on application requirements
  • Performance tuning, monitoring, and alert response for microservices

Requirements For Product Engineer, Backend - Mercoin

Go
Redis
MongoDB
  • Web application development knowledge and experience
  • Database schema design and efficient query creation (RDB, NoSQL)
  • Experience in web application operations/tuning and security knowledge
  • Experience in software architecture design and middleware selection
  • Ability to drive software development with ownership
  • Language requirements: Either English (CEFR B2) with Basic Japanese (A2) or Japanese (CEFR B2) with Basic English (A2)

Benefits For Product Engineer, Backend - Mercoin

  • Flexible working hours with no core time
  • Google Workspace
  • Modern development tools and infrastructure

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