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Ruby On Rails Developer Jobs in Rockville, MD (NOW HIRING)

ManTech International

Telephony Engineer

Mclean, VA · On-site

Develop and troubleshoot applications using PowerBuilder, Korn shell, and Ruby on Rails ... Proficiency in Ruby programming and the Ruby on Rails framework, along with strong experience in ...

ManTech

Telephony Engineer

Mclean, VA

Develop and troubleshoot applications using PowerBuilder, Korn shell, and Ruby on Rails ... Proficiency in Ruby programming and the Ruby on Rails framework, along with strong experience in ...

AppFolio

Sr Software Engineer - Accounting

Washington, DC · On-site +1

$138K - $182K/yr

Engineers work in small, focused, cross-functional teams comprised of a product manager, user ... Knowledge of Ruby on Rails and experience working with a language like Ruby, Java, or Python.

Signal Vine

Platform Engineer

Alexandria, VA · On-site

Technical Developer Position at Signal Vine Signal Vine, LLC is an exciting early-stage company ... Have used web frameworks to build one or more applications (i.e. RoR, NancyFx, Flask, Play, etc.

Signal Vine, Llc

Platform Engineer

Alexandria, VA · On-site

Your main focus will be building our custom DSL, you will also be expected to work on all aspects of the Signal Vine tech platform, including tasks such as maintaining our Ruby on Rails application ...

Signal Vine, LLC

Platform Engineer

Alexandria, VA · On-site

Your main focus will be building our custom DSL, you will also be expected to work on all aspects of the Signal Vine tech platform, including tasks such as maintaining our Ruby on Rails application ...

Ra

Full Stack Developer

Washington, DC

A Full Stack Developer Where is your seat? * Washington, DC How much are you paid? * $90,000 - $115 ... You have experience working on the server-side using Node, Elixir, Ruby on Rails, Python / Django ...

Ra

Full Stack Developer

Washington, DC

A Full Stack Developer Where is your seat? * Washington, DC How much are you paid? * $90,000 - $115 ... You have experience working on the server-side using Node, Elixir, Ruby on Rails, Python / Django ...

VTG

Senior Network Engineer

Chantilly, VA · Hybrid

$107K - $147K/yr

... DevOps practices. What will you do? • Design, implement, and maintain network and cloud ... Ruby on Rails, or similar development languages • Experience with Ansible, Puppet, Chef, or other ...

Veredus - DC

Jr. DataBase Developer

Washington, DC

$75K - $98K/yr

Experience with Ruby on Rails JRUBY, Java JBOSS, Tourquebox Business Intelligence and Data ... Candidates with Engineering, Computer Science or related field preferred or related field plus 3+ ...

Collabera

Jr. Web Developer

Columbia, MD · On-site

Position Details Job Title: Jr. Web Developer Job Location: Columbia, MD Job Duration: 6+ Months ... Strong understanding on Ruby on RaIls. Experience working in a fast paced, work-on-your-own ...

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Showing results 1-20

All JobsRuby On Rails Developer JobsRuby On Rails Developer Jobs in Rockville, MD

Ruby On Rails Developer information

See Rockville, MD salary details

$26K

$124.5K

$174.8K

How much do ruby on rails developer jobs pay per year?

As of Jun 9, 2026, the average yearly pay for ruby on rails developer in Rockville, MD is $124,468.00, according to ZipRecruiter salary data. Most workers in this role earn between $104,500.00 and $143,200.00 per year, depending on experience, location, and employer.

What are some common challenges Ruby on Rails Developers face when working on legacy codebases?

Ruby on Rails Developers often encounter challenges such as outdated dependencies, lack of documentation, and tightly coupled code when working with legacy projects. Adapting newer Rails versions while ensuring compatibility can require significant refactoring. Collaborating closely with team members, conducting thorough code reviews, and writing comprehensive tests are crucial for maintaining stability during updates and improvements.

What is the difference between Ruby On Rails Developer vs PHP Developer?

AspectRuby On Rails DeveloperPHP Developer
Required credentialsBachelor's in CS or related field; familiarity with Ruby, Rails frameworkBachelor's in CS or related field; proficiency in PHP
Work environmentWeb development teams, startups, tech companiesWeb development teams, agencies, small to large businesses
Industry usageTech startups, SaaS platforms, e-commerceContent management systems, e-commerce, enterprise apps
Common search intentRuby On Rails Developer vs PHP DeveloperRuby On Rails Developer vs PHP Developer

The main difference between a Ruby On Rails Developer and a PHP Developer lies in the programming languages and frameworks they specialize in. Ruby On Rails Developers focus on Ruby and the Rails framework, often working in startups and tech companies, while PHP Developers work with PHP, commonly in content management and e-commerce projects. Both roles require similar educational backgrounds and are integral to web development teams.

What are the key skills and qualifications needed to thrive as a Ruby On Rails Developer, and why are they important?

To thrive as a Ruby On Rails Developer, you need strong proficiency in Ruby, Rails framework, web development fundamentals, and typically a background in computer science or related fields. Experience with version control systems like Git, databases such as PostgreSQL or MySQL, and familiarity with testing frameworks and deployment platforms is essential. Excellent problem-solving abilities, attention to detail, and effective teamwork and communication skills help developers stand out. These competencies ensure robust, scalable application development and smooth collaboration within agile software teams.

What is a Ruby on Rails Developer?

A Ruby on Rails Developer is a software engineer who specializes in building web applications using the Ruby on Rails framework. Rails is a popular open-source server-side web application framework written in the Ruby programming language. Developers in this role design, implement, test, and maintain features for web apps, working both on the front-end and back-end. They often collaborate with designers, product managers, and other developers to deliver robust, scalable, and secure web solutions. Ruby on Rails Developers are valued for their ability to rapidly create high-quality applications using Rails’ conventions and best practices.
What cities near Rockville, MD are hiring for Ruby On Rails Developer jobs? Cities near Rockville, MD with the most Ruby On Rails Developer job openings:
Ruby On Rails Developer jobs near you
Infographic showing various Ruby On Rails Developer job openings in Rockville, MD as of May 2026, with employment types broken down into 78% Full Time, and 22% Part Time. Highlights an 80% Physical, 5% Hybrid, and 15% Remote job distribution, with an average salary of $124,468 per year, or $59.8 per hour.
Telephony Engineer

Telephony Engineer

ManTech International

Mclean, VA • On-site

Full-time

Posted 9 days ago

ManTech rating

8.8

Company rating: 8.8 out of 10

Based on 13 frontline employees who took The Breakroom Quiz

31st of 186 rated software companies

Job description

General information
Requisition #
R67420
Locations
USA-VA-McLean
Posting Date
04/29/2026
Security Clearance Required
TS/SCI w/ Poly
Remote Type
Onsite
Time Type
Full time
Description & Requirements
Unlock the secrets of intelligence with MANTECH! Join a dynamic team at the forefront of national security, providing advanced solutions to government intelligence agencies. Since 1968, we've been solving the toughest challenges with groundbreaking tech. Explore thrilling projects in Digital Transformation, Cybersecurity, IT, Data Analytics and Software Development. Elevate your career and make a difference. Your adventure begins now-unleash your potential with MANTECH!
MANTECH seeks a motivated, career and customer-oriented Telephony Engineer to join our team in McLean, VA. In this role, you'll combine expertise in telephony systems, Linux server management, and software development, focusing on VoIP, analog, ISDN systems, and Ruby on Rails for telephony applications.
Responsibilities include, but are not limited to:
  • Design, develop, and maintain voice media gateways for VoIP, analog, and ISDN systems. Install, configure, and troubleshoot telephony hardware and media gateways across secure networks.
  • Leverage BESS Billing and Provisioning Tools to optimize telephony systems and ensure seamless service delivery.
  • Configure and maintain Linux servers (Ubuntu, CentOS) for hosting telephony and web applications, ensuring performance, security, and scalability. Develop and troubleshoot applications using PowerBuilder, Korn shell, and Ruby on Rails.
  • Integrate telephony systems (e.g., IVR, call routing) into web applications using Ruby on Rails. Modernize legacy code and ensure reliable operation of telephony solutions.
  • Maintain clear technical documentation and provide ongoing support for telephony system integration, performance optimization, and troubleshooting.
  • Provide training and guidance to team members and stakeholders on telephony system integration, BESS tools, and server management best practices. Ensure comprehensive understanding of application workflows and troubleshooting processes.
  • Provide local travel support between customer buildings or temporary assignment to alternate locations for special projects.
  • Work an 8 hour shift as part of a coverage team operating between 6:00 AM and 6:00 PM. May need to flex shift as required.

Minimum Qualifications:
  • High School Diploma with 13+ years of experience or an Associate's Degree with 11+ years of experience, or a Bachelor's Degree with 9+ years of experience.
  • Familiarity with BESS Billing and Telephony Provisioning Tools.
  • Experience integrating telephony systems with web applications (e.g., handling inbound/outbound calls, IVR, call routing).
  • Advanced knowledge of Linux server management (Ubuntu, CentOS), including installation, configuration, troubleshooting, and performance optimization.
  • Strong verbal and written communication skills to interact effectively with cross-functional teams.

Preferred Qualifications:
  • Proficiency in Ruby programming and the Ruby on Rails framework, along with strong experience in telephony system integration.
  • Experience with scripting languages, including PowerBuilder and Korn shell, for system administration tasks.
  • Oracle Database Administrator certification is a plus.
  • Experience in provisioning telephony services.

Clearance Requirements:
  • Must have a current/active TS/SCI with Polygraph

Physical Requirements:
  • Must be able to remain in a stationary position at least 50% of the time. Constantly operate a computer, phone, and other office equipment for extended periods of time.

MANTECH considers all qualified applicants for employment without regard to disability or veteran status or any other status protected under any federal, state, or local law or regulation.
If you need a reasonable accommodation to apply for a position with MANTECH, please email us at careers@mantech.com and provide your name and contact information.

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