**Job Overview** We are looking for a highly skilled **Senior Ruby Developer** with deep expertise in **Ruby on Rails 3.2.x** , **Passenger web server** , and the **Rails asset pipeline** (Sass, CoffeeScript, Uglifier). This role involves both backend and frontend development, cross-functional collaboration, and integration with modern technologies such as **Java Spring MVC** , **microservices** , and **React** . **Note:** **Applicants must be legally authorized to work in the United States without the need for employer sponsorship, now or in the future** **.** **Salary and Other Compensation:** Applications will be accepted until October 15th, 2025 The annual salary for this position is between $70,000 - $80,000 depending on experience and other qualifications of the successful candidate. **Responsibilities** + Design, develop, and maintain scalable web applications using **Ruby on Rails 3.2.x** . + Configure and optimize application deployment on **Passenger web server** . + Manage frontend assets using **Sass** , **CoffeeScript** , and **Uglifier** within the Rails asset pipeline. + Write clean, maintainable, and testable Ruby code following industry best practices. + Collaborate with **QA** , **DevOps** , and **UI/UX** teams to ensure high-quality deliverables. + Conduct code reviews and provide constructive feedback to peers. + Troubleshoot and resolve bugs and performance issues. + Support integration efforts with **Java Spring MVC-based microservices** . + Contribute to frontend development using **React** for dynamic user interfaces. + Assist in modernizing legacy systems and transitioning to contemporary architectures. **Required Skills** + Minimum **6 years** of professional experience in **Ruby development** . + Strong proficiency in **Ruby** , **Rails 3.2.x** , and **Passenger** . + Hands-on experience with **Sass** , **CoffeeScript** , and **Uglifier** . + Solid understanding of **MVC architecture** and **RESTful API design** . + Familiarity with **Git** , **RSpec** , and **Agile development methodologies** . + Experience with **Java Spring MVC** , **microservices** , and **React** . + Knowledge of relational databases such as **PostgreSQL** or **MySQL** . + Background in **healthcare applications** is a plus. **Benefits:** **Cognizant offers the following benefits for this position, subject to applicable eligibility requirements:** + Medical/Dental/Vision/Life Insurance + Paid holidays plus Paid Time Off + 401(k) plan and contributions + Long-term/Short-term Disability + Paid Parental Leave + Employee Stock Purchase Plan Disclaimer: The salary, other compensation, and benefits information is accurate as of the date of this posting. Cognizant reserves the right to modify this information at any time, subject to applicable law. Cognizant is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to sex, gender identity, sexual orientation, race, color, religion, national origin, disability, protected Veteran status, age, or any other characteristic protected by law.