Senior Elasticsearch & Core Infrastructure Engineer

Fin is seeking a Senior Engineer to join the team building the core technologies behind our AI Agent Fin. You will scale Elasticsearch in production, work with MySQL, ingestion pipelines, and own low-level systems engineering across Rails based components and the monolith.

We expect 5+ years in production distributed systems, with a focus on backend scalability, observability, and performance. You will contribute to deployment, partner with domain experts, and help ship frequent updates across