Full Stack Developer - Ruby on Rails

Cognine; Hyderabad; On-site; INR 1,000,000 - 1,500,000; Full time

Job summary

Cognine, Hyderabad-based software company, is seeking a senior Ruby on Rails developer to design, build, and optimize scalable backend systems. You will work on API design, database optimization, and secure coding practices to deliver reliable software.

You will collaborate with frontend teams using React, integrate Stripe/Auth0/FusionAuth, implement Redis/Sidekiq caching, and contribute to CI/CD pipelines and SOC 2 compliance efforts while mentoring junior engineers.

Qualifications

• 4-5 years of hands-on Ruby on Rails development, with strong RSpec testing expertise.
• Experience with ActiveRecord ORM, PostgreSQL, RESTful APIs, and database optimization.
• Hands-on experience with Sidekiq, Redis, and third-party authentication/payment integrations.
• Experience with GitHub Actions, CI/CD pipelines, debugging, and performance optimization.
• Good understanding of application security and secure coding practices, plus automated testing.

Responsibilities

• Design, develop, and maintain scalable Rails applications with secure, high-performance code.
• Develop RESTful APIs and backend services; integrate third-party services (Stripe, Auth0, FusionAuth).
• Build automated tests with RSpec and Cucumber; ensure test coverage.
• Develop frontend enhancements using React; maintain Backbone.js and Marionette.js apps.
• Improve performance with Redis/Memcached caching and Sidekiq background jobs.
• Design and optimize PostgreSQL databases for performance and integrity.
• Ensure security, perform audits, and support CI/CD pipelines.
• Contribute to AI features, CLI tools, desktop apps, and React Native enhancements.
• Assist with SOC 2 compliance reviews and security assessments.

Skills

RESTful APIs

Security best practices

CI/CD pipelines

Debugging

Performance optimization

Tools

Ruby on Rails

ActiveRecord

PostgreSQL

RSpec

Cucumber

Sidekiq

Redis

Memcached

Stripe

Auth0

FusionAuth

GitHub Actions

React

Backbone.js

Marionette.js

CLI tools

React Native

Job description

• Design, develop, and maintain scalable, secure, and high-performance applications using Ruby on Rails, MVC architecture, and ORM.
• Develop RESTful APIs, backend services, and third-party integrations, including Stripe, Auth0, and FusionAuth.
• Build and maintain automated test suites using RSpec (mandatory) and Cucumber.
• Develop new frontend features using React and maintain existing applications built with Backbone.js and Marionette.js.
• Implement background job processing using Sidekiq and optimize application performance through Redis/Memcached caching.
• Design and optimize relational databases such as PostgreSQL ensuring performance and data integrity.
• Troubleshoot application issues, remediate security vulnerabilities, and maintain code quality through best practices and CI/CD pipelines.
• Contribute to AI-enabled features, CLI tools, desktop applications, and React Native mobile enhancements.
• Support SOC 2 compliance requirements, security reviews, and technical audits.

Required Skills & Qualifications:

• 4-5 years of hands-on experience in Ruby on Rails development, including strong expertise in RSpec testing.
• Experience with ActiveRecord ORM, PostgreSQL, RESTful APIs, and database optimization.
• Hands-on experience with Sidekiq, Redis, and third-party authentication/payment integrations.
• Experience with GitHub Actions, CI/CD pipelines, debugging, and performance optimization.
• Good understanding of application security, secure coding practices, and automated testing.

Good to Have:

• Experience with Cucumber and behavior-driven development (BDD).
• Familiarity with AI integrations, CLI development, and SOC 2 compliance.
• Knowledge of Redis Cache and application profiling tools.
• Knowledge of React Native, CodeRabbit, build.io hosting, Sendgrid and Astro marketing site.