Ruby on Rails Developer

CACI•Chantilly, VA

About The Position

CACI is seeking a Ruby on Rails Developer to build, enhance, and modernize web-based applications supporting a government customer. The role is part of an Agile development team delivering reliable, user-focused solutions across a portfolio of more than 40 applications. The developer will work with Ruby on Rails, HTML5, JavaScript, CSS, SQL, and AWS, collaborating with analysts, testers, project leads, and customers throughout the Agile software development lifecycle. The position contributes to quality software delivery through established development and deployment practices and may support application migrations, work with C#/.NET, and explore AI-assisted development tools for coding, testing, and other workflows. The role involves designing and maintaining complex applications with attention to performance, security, reliability, and maintainability; analyzing requirements, dependencies, feasibility, risks, and technical impacts; translating requirements into application solutions; producing technical specifications and maintainable code; integrating APIs and data conversion routines; testing and troubleshooting software; supporting CI/CD deployments; and maintaining documentation and release standards. The developer also contributes to modernization initiatives and seeks opportunities to improve development workflows. CACI describes a culture centered on integrity, innovation, trust, and continuous growth. Employees have access to a flexible time off benefit, learning resources, and a range of compensation, benefits, and development opportunities. The proposed salary range is $120,800–$265,800.

Requirements

At least two years of relevant web development or software development experience.
Active TS/SCI clearance with CI Polygraph.
Demonstrated experience developing, testing, and supporting web applications using Ruby on Rails.
Hands-on experience with HTML, JavaScript, CSS, SQL, and relational databases.
Strong understanding of web development principles, software engineering practices, coding standards, and application security.
Ability to analyze complex technical issues, assess application dependencies and potential impacts, and recommend effective solutions with minimal supervision.
Strong analytical, problem-solving, communication, and collaboration skills; ability to own development tasks and exercise sound technical judgment.
Ability to obtain CompTIA Security+ certification within the first six months.

Nice To Haves

Bachelor's degree in Computer Science, Information Systems, Software Engineering, or a related field, or equivalent work experience.
Experience developing, deploying, or supporting applications using AWS services and cloud-based architectures.
Familiarity with CI/CD pipelines, automated testing, and software deployment processes.
Experience developing or maintaining web APIs, application integrations, or data conversion routines.
Experience supporting application migrations, modernization initiatives, or enhancements to existing systems.
Familiarity with Agile software development methodologies and practices.
Experience using AI-assisted development tools or interest in applying AI to software development workflows.
Knowledge of or experience supporting Department of Defense or Intelligence Community environments.

Responsibilities

Design, develop, enhance, and maintain complex Ruby on Rails applications, emphasizing performance, security, reliability, and maintainability.
Analyze requirements and application dependencies; recommend implementation approaches; estimate development efforts; and assess technical feasibility, risks, and impacts across interconnected systems.
Collaborate with business analysts, project leads, testers, subject matter experts, and customers to translate requirements into application solutions.
Develop and review technical specifications, write maintainable code, build and integrate APIs and data conversion routines, and perform unit testing.
Support application testing and CI/CD deployments by diagnosing complex defects, identifying root causes, and coordinating resolutions.
Contribute to application migrations and modernization initiatives, identifying opportunities to improve functionality and leverage AWS and related technologies.
Maintain technical documentation, follow configuration management and release standards, and identify opportunities to improve development workflows, including through AI-assisted tools.