By Light HQ

Back End Ruby on Rails Developer

Job Locations US-VA-Arlington
Posted Date 2 hours ago(11/14/2025 7:33 PM)
ID
2025-10667
# of Openings
1
Category
Software
Clearance
Tier 4 - High Risk (Public Trust)

Company Overview

By Light Professional IT Services LLC readies warfighters and federal agencies with technology and systems engineered to connect, protect, and prepare individuals and teams for whatever comes next. Headquartered in McLean, VA, By Light supports defense, civilian, and commercial IT customers worldwide.

Position Overview

By Light is seeking a highly experienced Ruby on Rails Developer to support our Department of Veterans Affairs customer. You will play a crucial role in architecting, developing, and optimizing the backend systems that power our cutting-edge web applications and multi-factor authentication on VA.gov.

 

As a Senior Developer, you will lead technical initiatives, mentor junior team members, and collaborate closely with cross-functional teams, including designers and stakeholders, to ensure seamless integration and deliver high-performance, scalable solutions.

Responsibilities

  • Lead the definition of technical requirements, project timelines, and deliverables in collaboration with the team.
  • Work closely with the product team to identify technical and functional needs of the system, determine the priority of work, and ensure integrated end-to-end design and delivery.
  • Independently manage and prioritize multiple complex projects to meet goals without management oversight.
  • Design and implement robust, scalable authorization mechanisms.
    Spearhead initiatives to improve the existing codebase, focusing on maintainability, performance, and scalability.
  • Champion and implement best practices for continuous integration and continuous deployment.
    Oversee thorough testing and debugging processes to ensure high-quality and reliable software delivery.
  • Stay at the forefront of emerging technologies and industry trends, providing strategic recommendations for improving system architecture and development processes.
  • Mentor and guide junior developers, fostering a culture of technical excellence and knowledge sharing.

Required Experience/Qualifications

  • Bachelor's Degree in Computer Science or related field, and 4+ years of software development experience.
  • 3+ years of experience building and architecting application backends with Ruby on Rails.
  • 3+ years of experience working with AWS services, Git, RSpec, Postgres, and Redis.
  • Proven experience leading agile teams and implementing best practices for CI/CD.
  • Expert-level understanding of MVC architecture, testing methodologies, ORM concepts, and RESTful design principles.
  • Demonstrated ability to design and implement scalable, high-performance applications.
  • Strong leadership and mentoring skills with the ability to guide and develop junior team members.

Preferred Experience/Qualifications

  • Extensive experience designing and implementing OAuth and multi-factor authentication services.
  • Prior experience supporting Veterans Administration technologies.
  • Contributions to open-source projects or Ruby gems.
  • Experience with performance optimization and handling high-traffic applications.

Special Requirements/Security Clearance

  • Must be able to obtain and maintain a Public trust.

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