Senior Back-End Software Engineer, Infra

Proficient in English (spoken, written, and reading) at a CEFR Level C2 / ILR Level 5 Deep expertise with Ruby on Rails, with an emphasis on infrastructure and architectural improvements Solid experience working with MySQL and/or Postgres A strong track record of improving performance, scalability, and system reliability 5+ years of experience in a back-end engineering role, ideally focused on infrastructure or platform systems Comfortable working autonomously in a fast-paced, fully remote environment

Maintain and modernize our Rails stack, including dependency upgrades, performance optimization and security enhancement Build internal tools, SDKs, and libraries to improve developer experience and infrastructure scalability Partner with your front-end counter-parts and SREs to support observability, performance, and reliability initiatives Identify opportunities to build in-house systems that reduce reliance on costly third-party services Contribute to architectural decisions that improve the performance, security and cost-efficiency of our platform