Senior Search Platform Infrastructure Engineer
想定年収
応相談
勤務地
東京都 港区
リモート
リモート可
募集中
仕事内容
メルカリのPlatform DivisionのAutonomous Cloud / Search Infrastructureチームで、社内向けのマネージドサービスとして検索プラットフォームを運用するSenior Search Platform Infrastructure Engineer。プロダクトクリティカルな大規模Elasticsearchクラスタ（Redis・ベクトルDB含む）のライフサイクル管理、オンコール・インシデント対応、JVM・クエリ層のパフォーマンス改善を担う。数億規模のインデックスを高クエリ量で運用する。
求めるスキル・経験
必須
Shared belief in Mercari's mission and values.
Senior-level engineering experience operating distributed systems in production at scale.
Strong system-design and distributed-systems fundamentals: consistency, replication, capacity planning, failure modes.
Production ownership of Elasticsearch (or a comparable Lucene-based search engine) - cluster sizing, JVM / heap tuning, query-performance debugging, shard strategy.
Track record of owning a technical domain end-to-end: design, build, on-call, incident follow-through, long-term roadmap. Proficiency in Go and/or Java.
English: Business level (CEFR – B2)
歓迎
Lucene internals or JVM performance-engineering depth.
Vector search knowledge.
Production experience operating Kubernetes (GKE, EKS, or AKS) - cluster upgrades, incident debugging.
Terraform at scale (custom modules, large-blast-radius migrations).
CI/CD platform experience (GitHub Actions, Jenkins, or similar).
Search / data services for C2C or e-commerce at scale.