Ruby on Rails Developer (TS/SCI CI Poly)

Seamless Migration•Chantilly, VA

1d•Onsite

About The Position

Seamless Migration is seeking a career- and customer-oriented Ruby on Rails Developer to join its team in Chantilly, Virginia. The developer will build, enhance, and modernize web-based applications supporting a government customer, working on an Agile development team across a portfolio of more than 40 applications. The role involves developing and maintaining complex Ruby on Rails applications, with emphasis on performance, security, reliability, and maintainability. The developer will collaborate with analysts, testers, project leads, subject matter experts, and customers throughout the Agile software development lifecycle. Work may also include application migrations, C#/.NET, AWS technologies, and AI-assisted development tools that support coding, testing, and other workflows. An existing TS/SCI clearance with CI polygraph is required to start. The employee must be able to obtain CompTIA Security+ certification within the first six months.

Requirements

Minimum of two years of relevant web development or software development experience.
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 take ownership of development tasks and exercise sound technical judgment.
Ability to obtain CompTIA Security+ certification within the first six months.
Existing TS/SCI clearance with CI polygraph required to start.

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 and follow configuration management and release standards.
Identify opportunities to improve development workflows, including through AI-assisted tools.