You will take ownership of a backend system that is critical to the company and our customers. Hands-on code implementation, code reviews, testingEnsure reliability, performance and correctness.
Improve code quality and internal structure where possible.
What we are looking for:5 years plus experience building and maintaining production systems as backend engineerStrong experience with Ruby on RailsAI-first mindset using tools like Cursor, Claude Code, Codex, in your daily workflowWorking on large-scale productsExperience owning systems that are business critical.
Advanced level of English.
Tech Stack:Language & Platform: RubyData: PostgreSQL or RedisInfrastructure: TailwindLocation:Barcelona, Spain or Fully remote within a +/
- 4hrs CET #
📌 Backend Senior Developer Ruby on Rails H/F (España)
🏢 Ersilia
📍 España
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