Full Stack Ruby on Rails Developer

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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.

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DMI, LLC is seeking a Full‑Stack Ruby on Rails Developer to work onsite in our Cincinnati office and contribute to developing our SaaS Telecom Expense Management platform. As a Full Stack Ruby Developer, you will play a key role in building and enhancing our platform, designing and maintaining backend systems for large‑scale data parsing and processing, creating and optimizing RESTful and Graph

QL APIs, and eventually taking ownership of converting existing Ruby data pipelines to a new Python‑based pipeline. On the front end, you will develop user‑friendly, responsive interfaces using Vue.js, bridging design and functionality. You will collaborate closely with product managers, designers, and fellow developers, mentor junior developers, conduct code reviews, and continuously improve the platform.

• Design and build backend components to handle large‑scale data parsing, processing, and storage efficiently.
• Develop user‑friendly, responsive, and highly functional interfaces that enhance the customer experience.
• Implement and maintain robust parsing workflows to process and analyze complex datasets.
• Partner with product managers, designers, and other developers to define new features and improve the platform.
• Create and optimize RESTful and Graph
  
  QL APIs to ensure seamless integration with external systems.
• Troubleshoot and resolve complex production issues to maintain platform reliability and performance.
• Conduct code reviews, offer constructive feedback, and mentor junior developers to foster growth within the team.
• Stay updated on emerging technologies and best practices to recommend and implement improvements.

• Bachelor’s degree in Computer Science, Software Engineering, or a related field (equivalent experience considered).
• 5–7 years of full‑stack development experience, with a strong focus on Ruby and Ruby on Rails.
• 2–3 years of experience in Python to support data pipeline conversion.
• At least 2–3 years of experience leading or mentoring teams, conducting code reviews, and taking ownership of significant projects.

• Strong expertise in Ruby and 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 (EC2, S3, Lambda, RDS).
• Proficiency in version control (Git, Git Hub).
• Strong understanding of API development (RESTful, Graph
  
  QL).
• Solid knowledge of Agile development methodologies.
• Excellent problem‑solving skills and the ability to thrive independently and in a team.
• Exceptional communication and collaboration abilities.
• Familiarity with CI/CD pipelines and tools like Docker or Terraform.
• Certifications in Ruby, Python, or related technologies.

Location:

Cincinnati, OH (onsite). Minimum citizenship status required: U.S. Citizen.

DMI is a diverse, prosperous, and rewarding place to work. Our culture is shaped by five core values that guide how we work, grow, and succeed together.

• Do What’s Right – We lead with honesty and integrity.
• Own the Outcome – We take responsibility and deliver.
• Deliver for Our Customers – We are relentless about delivering value.
• Think Bold, Act Smart – We innovate with purpose.
• Win Together – We collaborate and celebrate our success.

• Convenience/Concierge – Virtual health visits, commuter perks, pet insurance, and entertainment discounts.
• Development – Annual performance reviews, tuition assistance, and internal career growth opportunities.
• Financial – Generous 401(k) matches, life and disability insurance, and financial wellness tools.
• Recognition – Annual awards, service anniversaries, referral bonuses, and peer‑to‑peer shoutouts.
• Wellness – Healthcare coverage, wellness programs, flu shots, and biometric screenings.

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