Requirements

• ~5 years skilled software engineering experience, including real production support

responsibility (not just greenfield feature work)

• Strong hands-on Ruby on Rails experience ActiveRecord, background jobs, testing,

debugging production issues

• Prior experience working in a multi-tenant software system — you should already

understand the concept and its failure modes (data isolation, tenant-scoped queries, noisy-

neighbor issues); we will not be teaching this concept from scratch on a live client system

• Strong, independent SQL ability — comfortable writing non-trivial queries against

production data for reporting and diagnostics, not just via an ORM

• Comfortable scripting in Python for automation/data tasks

• Practical Git/GitHub and CI/CD experience

• Full-stack: backend in Rails

• Strong analytical/debugging ability — can trace an issue through a live system under

some time pressure, since this role includes customer-facing production support.

📌 Ruby On Rails Developer (Kolkata)
🏢 Capital Numbers Infotech
📍 Kolkata