Senior Full Stack Ruby on Rails Developer

DMI is a leading provider of digital services and technology solutions, headquartered in Tysons Corner, VA. With a focus on end-to-end managed IT services, including managed mobility, cloud, cybersecurity, network operations, and application development, DMI supports public sector agencies and commercial enterprises around the globe. Recognized as a Top Workplace, DMI is committed to delivering secure, efficient, and cost-effective solutions that drive measurable results. Learn more at www.dminc.com

About The Opportunity

DMI, LLC is seeking a Senior Full-Stack Ruby on Rails Developer , to contribute to developing our SaaS Telecom Expense Management platform. As a Senior Full Stack Ruby Developer, you will play a key role in building and enhancing our SaaS Telecom Expense Management platform. Your work will involve designing and maintaining backend systems that handle large-scale data parsing and processing, ensuring robust performance and accuracy. You will also create and optimize RESTful and GraphQL APIs, enabling quality integrations with external systems and delivering reliable and efficient backend infrastructure. T his individual will be comfortable with the Ruby on Rails applicaiton development and management, but will also be able to work with our in-development data pipeline in Python. Eventually, this individual will be able to take ownership of the process of converting our existing data in Ruby to our new Python based pipeline.

On the front end, you will develop user-friendly, responsive interfaces that provide an intuitive experience for our users. By leveraging Vue.js, you will ensure the platform remains visually appealing, efficient, and easy to navigate. Your expertise will be critical in bridging the gap between design and functionality, creating a product that stands out for its usability and technical sophistication.

Collaboration is central to this role. You will work closely with product managers, designers, and fellow developers to define and implement new features, enhance existing functionalities, and continuously improve the platform. You will also be responsible for mentoring junior developers, conducting code reviews, and establishing a culture of collaboration and innovation.

Key Responsibilities

• Backend Development: Design and build backend components to handle large-scale data parsing, processing, and storage efficiently.
• Frontend Development: Develop user-friendly, responsive, and highly functional interfaces that enhance our customer experience.
• Data Parsing: Implement and maintain robust parsing workflows to process and analyze complex datasets.
• Collaborate Across Teams: Partner with product managers, designers, and other developers to define features and improve the platform.
• API Development: Create and optimize RESTful and GraphQL APIs to ensure seamless integration with external systems.
• Problem Solving: Troubleshoot and resolve complex production issues to maintain platform reliability and performance.
• Mentorship: Conduct code reviews, offer constructive feedback, and mentor junior developers to foster growth within the team.
• Continuous Improvement: Stay updated on emerging technologies and best practices to recommend and implement improvements.
  
  

Qualifications

Education and Years of Experience:

• Bachelor’s degree in Computer Science, Software Engineering, or a related field. Equivalent experience will also be considered.
• 5-7 years of experience in full-stack development, with a strong focus on Ruby and related frameworks like Ruby on Rails.
• 2-3 years experience in Python to support the conversion of our existing data ingestion in Ruby to the new Python based pipeline.
• At least 2-3 years of experience in leading or mentoring teams, conducting code reviews, and taking ownership of significant projects.
  
  

Required And Desired Skills/Certifications

• Strong expertise in Ruby and frameworks like Ruby on Rails, with a proven track record in full-stack development.
• Strong expertise in Python, with experience managing data pipelines.
• Solid experience with data parsing and managing large datasets.
• Front-end proficiency, including HTML, CSS, JavaScript, and familiarity with modern frameworks like Vue.js.
• Hands-on experience building and deploying applications in AWS using services like EC2, S3, Lambda, and RDS.
• Proficiency in version control systems, particularly Git and GitHub.
• Strong understanding of API development, including RESTful and GraphQL APIs.
• Solid knowledge of Agile development methodologies.
• Excellent problem-solving skills and an ability to thrive both independently and in a team environment.
• Exceptional communication and collaboration abilities.
• Familiarity with CI/CD pipelines and tools like Docker or Terraform.
• Certifications in Ruby, Python, or related technologies.
  
  

Min Citizenship Status Required: Must be a U.S. Citizen

Location: Remote, USA

Working at DMI

Benefits

DMI is a diverse, prosperous, and rewarding place to work. Being part of the DMI family means we care about your well-being. As such, we offer a variety of perks and benefits that help meet various interests and needs, while still having the opportunity to work directly with a number of our award-winning, Fortune 1000 clients. The following categories make up your DMI well-being:

• Convenience/Concierge - Virtual visits through health insurance, pet insurance, commuter benefits, discount tickets for movies, travel, and many other items to provide convenience.
• Development – Annual performance management, continuing education, tuition assistance, internal job opportunities along with career enrichment and advancement to help each employee with their professional and personal development.
• Financial – Generous 401k matches both pre-tax and post-tax (ROTH) contributions along with financial wellness education, EAP, Life Insurance, and Disability to help provide financial stability for each DMI employee.
• Recognition – Great achievements do not go unnoticed by DMI through the Annual Awards ceremony, service anniversaries, peer-to-peer acknowledgment, and employee referral bonuses.
• Wellness – Healthcare benefits, Wellness programs, Flu Shots, Biometric screenings, and several other wellness options.
  
  

Employees are valued for their talents and contributions. We all take pride in helping our customers achieve their goals, which in turn contributes to the overall success of the company.

• No Agencies Please *********
  
  

Applicants selected may be subject to a government security investigation and must meet eligibility requirements for access to classified information. US citizenship may be required for some positions.

Job ID: 2025-27634