Software Engineer, Search - US App

Mercari, a leading marketplace app company founded in 2013, is seeking a Senior Software Engineer to join their Search team for the US App. This role is crucial in helping buyers discover relevant items and empowering sellers by improving their visibility in Mercari's US marketplace. The position is based in Tokyo, Japan, with a hybrid work arrangement and offers full flextime scheduling.

The Search team is responsible for end-to-end development and operation of the search system, built on Elasticsearch, handling high query volumes and constantly evolving inventory. Recent initiatives include modernizing ranking and retrieval pipelines, strengthening platform stability, and improving search precision.

As a Senior Software Engineer, you'll work on challenging projects that directly impact millions of users, including optimizing search relevance, implementing real-time indexing, and enhancing cache optimization. You'll collaborate with cross-functional teams across the US and Japan, contributing to architectural decisions and mentoring junior engineers.

The role requires strong expertise in search technologies, microservices architecture, and programming languages like Java or Go. You'll need 5+ years of professional experience and excellent English communication skills. The position offers opportunities to work with cutting-edge technologies, contribute to open-source projects, and be part of a globally distributed team.

Mercari values diversity and inclusion, working towards a world where no one's potential is limited by their background. The company offers a comprehensive recruitment process, professional development opportunities, and a culture built on strong engineering principles including Passion For The Product, Grow Together, Solve Through Mechanisms, and Collaborate Openly.