Senior Ruby on rails Developer (Remote)

Cognizant; Washington (District of Columbia); Remote; USD 70,000 - 80,000; Full time

Job summary

A leading IT services company is seeking a highly skilled Senior Ruby Developer in Washington, DC. The role requires deep expertise in Ruby on Rails, both backend and frontend development, and collaboration across teams. Applicants with a strong knowledge of Java Spring MVC and modern technologies like React are encouraged to apply. The position offers a competitive salary and comprehensive benefits.

Benefits

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

Qualifications

• 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.

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.
• Write clean, maintainable, and testable Ruby code.
• Collaborate with QA, DevOps, and UI/UX teams for quality deliverables.
• Conduct code reviews and provide constructive feedback.
• Troubleshoot and resolve bugs and performance issues.
• Support integration with Java Spring MVC-based microservices.
• Contribute to frontend development using React.
• Assist in modernizing legacy systems.

Skills

Ruby

Rails 3.2.x

Passenger

Sass

CoffeeScript

Uglifier

Java Spring MVC

microservices

React

MVC architecture

RESTful API design

Git

RSpec

Agile development methodologies

PostgreSQL

MySQL

Job description

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

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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.