Senior Ruby on Rails Engineer | Backend SaaS (London)

Fynity is seeking a Senior Ruby on Rails Engineer to join a growing tech business in London. Hybrid role with 2 days on-site, focusing on backend systems and operational SaaS platforms.

You’ll work on Rails applications, APIs, and PostgreSQL, aiming for reliability and scalability across live production environments, collaborating with Product, Platform, and Engineering teams to drive platform growth. You will own critical backend services, contribute to architecture decisions, and mentor junior

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