Senior Backend Engineer

About this role

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Skills you'll use

What you'll do

• Collaborate with the development team, product managers, and designers to understand business requirements and contribute to technical specifications and software solutions.
• Design, develop, test, and deploy back-end components across our Ruby on Rails and non-Rails (e.g. Node.js) services — this role is expected to work across the backend stack, not within a single framework.
• Work with front-end engineers to develop APIs that facilitate smooth data flow and system interoperability.
• Contribute to system design discussions, weighing in on architecture, scalability, and trade-offs for new and existing services.
• Optimize code, conduct testing, and follow best practices to ensure the reliability, performance, and security of the application.
• Learn and contribute to the development and maintenance of cloud-based infrastructure, preferably using AWS, ensuring scalability, high availability, and disaster recovery.
• Use AI-assisted development tools (e.g. Cursor or similar) thoughtfully as part of the engineering workflow — going beyond surface-level usage to actually improve code quality, review rigor, and team productivity.
• Collaborate with cross-functional teams to ensure successful product launches and provide support when needed.
• Participate actively in Agile development practices, including sprint planning, stand-ups, and retrospectives.
• Contribute to the refinement of user stories, provide effort estimations, and prioritize tasks to ensure timely delivery.

Who can apply

• 3–7 years of backend development experience, with strong, hands-on Ruby on Rails expertise. Exceptionally strong candidates with ~2 years of experience will also be considered.
• Demonstrated ability and willingness to work across multiple backend services/frameworks (e.g. Rails and Node.js) — candidates seeking a Rails-only scope are not a fit for this role.
• Strong IC (individual contributor) who can join any existing project and start contributing within a week's time.
• Can build and integrate REST APIs in Rails.
• Experience working with async processors such as Sidekiq, Resque, ActiveJob, or Shoryuken.
• Solid understanding of Rails object-oriented programming concepts.
• Comfortable engaging in system design discussions — able to reason through architecture, scale, and trade-offs, not just implement to spec.
• Genuine, hands-on experience using AI tools in development — able to speak concretely to workflow, prompting practices, code review process with AI-assisted code, and problems solved (not just familiarity with a tool name).
• Ability to speak in depth about past project ownership — real depth of involvement matters more than breadth listed on a resume.
• Familiarity with front-end technologies such as HTML, CSS, and JavaScript is a plus.

About JOSYS DIGITAL TECHNOLOGIES INDIA

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