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Senior Ruby On Rails Engineer Jobs in Denver, CO

BAE Systems

Eng II - SW

Westminster, CO · On-site

$79K - $134K/yr

The Engineering, Science and Analysis (ESA) Strategic Capabilities Unit comprises the technical ... Examples include Ruby on Rails, Knockout, Vue, NodeJS, JavaScript, Keycloak, Redis, Traefix, and ...

Blue Origin

Software Engineer II

Denver, CO · On-site

$123K - $173K/yr

As aSoftware Engineer II, you will join a team of passionate software platform engineers ... Next.js, Ruby on Rails, Laravel, Django, Flask,etc) * Front-end skills: HTML, CSS, JavaScript (ES6 ...

Human Agency

Senior Full-Stack Engineer

Denver, CO · On-site

We're seeking a Senior Full-Stack Engineer to join our growing team. In this role, you'll lead ... Proficiency in Python and Ruby on Rails , with significant backend experience. * Experience in ...

SRS Acquiom

Senior Software Engineer - VDR

Denver, CO

$145K - $160K/yr

Required Qualifications & Skills * 5+ years of experience as a full stack engineer * 3+ years of experience with Ruby on Rails * Expertise creating robust CI/CD pipelines * Expertise with modern ...

BAE Systems

Eng Prin - SW

Broomfield, CO · On-site

$118K - $200K/yr

The Engineering, Science and Analysis (ESA) Strategic Capabilities Unit comprises the technical ... Web and REST service development using Spring, Jersey, Flask, CherryPy, or Ruby on Rails ...

Gusto

Staff Software Engineer, Retirement AI

Denver, CO · On-site

$227 - $284/hr

You'll work closely with a small, senior team to implement language‑model‑powered experiences ... Experienced with Ruby on Rails (or any comparable language), React (or any comparable library). Our ...

BAE Systems

Eng II - SW

Aurora, CO · On-site

$79K - $134K/yr

The Engineering, Science and Analysis (ESA) Strategic Capabilities Unit comprises the technical ... Web and REST service development using Spring, Jersey, Flask, CherryPy, or Ruby on Rails ...

Quantix

Ruby Developer

Denver, CO · On-site

They are seeking a Ruby Developer to join their team in Denver, CO on a contract to hire basis. The role involves working with Ruby, RESTful API services, Oracle databases, and potentially Angular or ...

Quantix

Ruby Developer

Denver, CO

Contract to Hire Length: 3 Months Our client in the Denver, Colorado area is looking for a Ruby Developer to join their team on a contract to hire basis. This person will join an existing team, and ...

Wilson & Company

Rail Engineer

Denver, CO

$60K - $90K/yr

Professional Engineer (P.E.) license preferred for senior-level candidates. * 3+ years of rail ... Travel may be required based on project needs. Annual Salary range: $60,000 - $90,000 Please note ...

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All JobsRuby On Rails Engineer JobsSenior Ruby On Rails Engineer JobsSenior Ruby On Rails Engineer Jobs in Denver, CO

Senior Ruby On Rails Engineer information

See Denver, CO salary details

$97.8K

$162.3K

$204.3K

How much do senior ruby on rails engineer jobs pay per year?

As of Aug 12, 2026, the average yearly pay for senior ruby on rails engineer in Denver, CO is $162,342.00, according to ZipRecruiter salary data. Most workers in this role earn between $146,700.00 and $180,600.00 per year, depending on experience, location, and employer.

What does a senior Ruby on Rails engineer do?

A Senior Ruby on Rails Engineer is responsible for designing, developing, and maintaining web applications using the Ruby on Rails framework. They lead technical projects, write clean and efficient code, and often mentor junior developers. Their duties also include optimizing application performance, ensuring code quality through reviews and testing, and collaborating with cross-functional teams to deliver robust solutions. Senior engineers are expected to have deep expertise in Rails and related technologies, along with strong problem-solving skills.

What is the difference between Senior Ruby On Rails Engineer vs Ruby On Rails Developer?

AspectSenior Ruby On Rails EngineerRuby On Rails Developer
Experience LevelTypically 5+ years, with leadership responsibilitiesUsually 1-3 years, focused on coding and feature development
ResponsibilitiesArchitecting solutions, mentoring, overseeing projectsImplementing features, fixing bugs, writing code
Skills & CertificationsAdvanced Ruby on Rails, system design, team managementProficient in Ruby on Rails, basic system understanding
Work EnvironmentCollaborates with cross-functional teams, often in tech companiesFocuses on development tasks, often in startups or tech firms

While both roles require strong Ruby on Rails skills, Senior Ruby On Rails Engineers typically have more experience, leadership duties, and strategic responsibilities compared to Ruby On Rails Developers, who primarily focus on coding and feature implementation.

Is a senior Ruby on Rails engineer still in demand?

Senior Ruby on Rails engineers remain in demand due to the framework's continued use in web development and the need for experienced developers to maintain and upgrade existing applications. Skills in related technologies like JavaScript, HTML, and database management enhance job prospects, especially in companies prioritizing rapid development and scalable solutions.

What are the key skills and qualifications needed to thrive as a senior Ruby on Rails engineer?

To thrive as a Senior Ruby On Rails Engineer, you need deep expertise in Ruby, Rails, web development best practices, and experience with databases, typically supported by a relevant degree or substantial industry experience. Familiarity with version control systems like Git, CI/CD pipelines, testing frameworks (RSpec, Minitest), and cloud platforms is essential, along with knowledge of front-end technologies. Strong problem-solving skills, effective communication, and the ability to mentor junior developers make someone stand out in this role. These skills ensure high-quality, scalable applications and effective collaboration within fast-paced development teams.

How does a senior Ruby on Rails engineer typically collaborate with product managers and designers during the software development lifecycle?

As a Senior Ruby on Rails Engineer, you'll work closely with product managers and designers throughout the development process. You'll participate in planning meetings to clarify requirements and offer technical insights, collaborate with designers to ensure feasibility and scalability of UI/UX designs, and provide regular feedback on how features are implemented. Effective communication and a proactive approach to problem-solving are key, as you'll help bridge the gap between technical constraints and product vision, ensuring successful and timely feature delivery.
Senior Ruby On Rails Engineer jobs near you
Infographic showing various Senior Ruby On Rails Engineer job openings in Denver, CO as of August 2026, with employment types broken down into 100% Full Time. Highlights an 100% In-person job distribution, with an average salary of $162,342 per year, or $78 per hour.

Eng II - SW

BAE Systems

Westminster, CO • On-site

$79K - $134K/yr

Full-time

Re-posted 7 days ago

BAE Systems rating

8.4

Company rating: 8.4 out of 10

Based on 150 frontline employees who took The Breakroom Quiz

10th of 49 rated military and defense

Job description


The Electrical Solutions team is seeking a Software Engineer to work with technical teams using primarily Python and Ruby, to design, develop, integrate, and certify test system software and hardware for a variety of applications.
The Engineering, Science and Analysis (ESA) Strategic Capabilities Unit comprises the technical talent and organizational leadership that enables the successful delivery of high-impact discriminating technologies for our customers' missions. Our collaborative, cross-functional teams are committed to innovation, integrity, continual learning and strong execution.
What You'll Do:
  • Key member of technical teams to design, develop, integrate, and certify test system software and hardware for a variety of applications including subsystem command and data handling, low level hardware control, automation, custom interfaces, and communication software for ground, airborne and/or space systems.
  • Participate in the following activities: requirements definition, analysis and decomposition, support system level architecture definition, and design/implement test software for multiple programs concurrently.
  • Create professional software applications and scripts primarily in Python and Ruby with other languages as needed.
  • Communicate technical, cost, and schedule status to program management and negotiate scope and resources to meet program goals.
  • Collaborate with other disciplines to ensure test systems meet the end needs of the program.
  • Work with program teams to estimate technical resource requirements, including data structures, storage, analysis, test equipment, and networking needs.
  • Participate in department activities to improve methods and processes
  • Work under formal software development methodologies.
  • Maintain a regular and predictable work schedule.
  • Establish and maintain effective working relationships within the department, the Strategic Business Units, Strategic Capabilities Units and the Company. Interact appropriately with others in order to maintain a positive and productive work environment.
  • Perform other duties as necessary.

On-Site Work Environment: This position requires regular in-person engagement by working on-site five days each normally scheduled week in the primary work location. Travel and local commute between company campuses and other possible non-company locations may be required.
Working Conditions:
  • Work is performed in an office, laboratory, production floor, or cleanroom, outdoors or remote research environment.
  • May occasionally work in production work centers where use of protective equipment and gear is required.
  • May access other facilities in various weather conditions.

Required Skills and Education
  • BS degree or higher in Engineering or a related technical field is required, plus 2 or more years of related experience.
  • Each higher-level degree, i.e., Master's Degree or Ph.D., may substitute for two years of experience. Related technical experience may be considered in lieu of education. Degree must be from a university, college, or school which is accredited by an agency recognized by the US Secretary of Education, US Department of Education.
  • Experience using Python to integrate with hardware (COTS instrumentation, custom hardware, FPGA's, etc.) to test products under development.
  • Experience configuring and interfacing to instrumentation across various protocols, including UART, GPIB, DAQmx, RIO, TCP-IP, USB, Spacewire, 1553, and other related technologies, desired.
  • Experience with containerization technologies such as Docker or Podman, including developing software within containerized environments and creating/configuring containerized infrastructure.
  • Hands-on experience with CI/CD pipeline development, including creating automated workflows, and integrating with version control systems.
  • Experience working on full software lifecycle including ability to define requirements from an abstract system with minimal guidance.
  • Demonstrated ability to work across engineering disciplines and cross-functional teams.
  • Self-starter, good interpersonal and communication skills, ability to work independently and on a team.
  • Working knowledge of software quality principles.
#LI-LB3
A security clearance or access with Polygraph is not required to be eligible for this position. However, the applicant must be willing and eligible for submission, depending on program requirements, after an offer is accepted and must be able to maintain the applicable clearance/access.
Preferred Skills and Education
  • TS/SCI or current SSBI.
  • Proficiency in web frameworks, components, and technologies desired. Examples include Ruby on Rails, Knockout, Vue, NodeJS, JavaScript, Keycloak, Redis, Traefix, and Minio.
  • Experience working with OpenC3 COSMOS as a test executive and creating custom Ruby based OpenC3 components.
  • Experience with a range of operating systems and scripting tools, including Linux, Windows, BASH, and PowerShell, with the ability to write simple scripts, automate tasks, and troubleshoot common issues.
  • Experience with databases, both relational and NoSQL.
  • Basic understanding of FPGA design and VHDL.
  • Experience with the NI toolchain such as LabVIEW (including RT and FPGA) and Veristand.
  • Experience with software security best practices. Examples include identifying/mitigating vulnerabilities through static code analysis, CVE analysis, implementing secure connections, and compliance with CMMC security principals.

About BAE Systems Space & Mission Systems
BAE Systems, Inc. is the U.S. subsidiary of BAE Systems plc, an international defense, aerospace and security company which delivers a full range of products and services for air, land and naval forces, as well as advanced electronics, security, information technology solutions and customer support services. Improving the future and protecting lives is an ambitious mission, but it's what we do at BAE Systems. Working here means using your passion and ingenuity where it counts - defending national security with breakthrough technology, superior products, and intelligence solutions. As you develop the latest technology and defend national security, you will continually hone your skills on a team-making a big impact on a global scale. At BAE Systems, you'll find a rewarding career that truly makes a difference.
Headquartered in Boulder, Colorado, Space & Mission Systems is a leading provider of national defense and civil space applications, advanced remote sensing, scientific and tactical systems for government and commercial customers. We continually pioneer ways to innovate spacecraft, mission payloads, optical systems, and other defense and civil capabilities. Powered by endlessly curious people with an unwavering mission focus, we continually discover ways to enable our customers to perform beyond expectation and protect what matters most.
This position will be posted for at least 5 calendar days. The posting will remain active until the position is filled, or a qualified pool of candidates is identified.
Multiple positions may be available on this opening.

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