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Freelance Senior Ruby On Rails Developer Jobs in Colorado

Worky

Senior Software Engineer, Full-Stack

Broomfield, CO · On-site

$120 - $180/hr

We're looking for a Senior Full-Stack Engineer to help build our marketing and customer engagement ... Our stack is Ruby on Rails on the backend and Vue.js on the frontend -- and we value engineers who ...

Ask IT consulting

Rupy scriptingde

Denver, CO · On-site

Company Description Job Title:: Devops Job location Downtown Denver. Job Contract:7 months Candidate MUST HAVE experience writing Ruby. Top Skills: Ruby MongoDB This person will be supporting a ...

Artech Information System LLC

DevOps Engineer

Denver, CO · On-site

$54.25 - $74.25/hr

PHP, RoR, Python, Java, Groovy, etc.) Cassandra Database Administration Familiarity with SOA, SOLR ... This is a role that requires representation and reconciliation of both developer and engineering ...

BAE Systems

Eng Sr - SW

Westminster, CO · On-site

$123K - $163K/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 ...

ROR Partners Inc

Marketing Analyst

Allenspark, CO · On-site

$60K - $90K/yr

Overview: ROR Partners is a thriving client-driven media marketing and data company. We offer ... This role partners closely with Analytics, Data Engineering, Media, and Client Success teams to ...

ROR Partners Inc

Marketing Analyst

Boulder, CO · On-site

$60K - $90K/yr

Overview: ROR Partners is a thriving client-driven media marketing and data company. We offer ... This role partners closely with Analytics, Data Engineering, Media, and Client Success teams to ...

Quantix, Inc.

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 ...

BAE Systems

Eng Sr - SW

Aurora, CO · On-site

$124K - $164K/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

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 ...

BAE Systems

Eng Sr Prin - SW

Aurora, CO · On-site

$124K - $164K/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 ...

BAE Systems

Eng Sr Prin - SW

Broomfield, CO · On-site

$123K - $162K/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 ...

AppFolio

CO

You'll collaborate or embed with engineering teams, helping them to improve the reliability and ... Mastery experience with some areas of our tech like Ruby on Rails, Kubernetes, MySQL, Linux ...

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Senior Software Engineer, Full-Stack

Recurly

Broomfield, CO • On-site

Full-time

Medical, Dental, Vision, Life, Retirement

Posted 18 days ago

Job description

We're looking for a Senior Full-Stack Engineer to help build our marketing and customer engagement platform. In this role, you'll design and develop data-driven, customer-facing features and backend services that power real-time personalization, campaign delivery, and transaction support. Our stack is Ruby on Rails on the backend and Vue.js on the frontend - and we value engineers who lead with strong product instincts, deep technical judgment, and a pragmatic mindset.
This is a great opportunity for an experienced engineer who enjoys owning features end-to-end, collaborating closely with cross-functional partners, and mentoring less-experienced teammates, with room to grow into broader technical leadership. We believe the best engineers today are fluent in AI - comfortable using AI-assisted development tools and thoughtful about how AI capabilities can be woven into product features and platform experiences.
This is a hybrid role based out of our Broomfield, Colorado office.
Responsibilities
  • Full-Stack Development: Design and build robust, secure, and scalable systems across our Ruby on Rails and Vue.js stack, with ownership from API design and data modeling through to rich front-end experiences.
  • Technical Contribution: Contribute to architecture and design discussions for key platform initiatives, and help establish and follow sound engineering patterns.
  • Mentorship: Support the growth of junior and mid-level engineers through code reviews, design feedback, and pairing.
  • Performance & Quality: Identify and drive improvements to backend and frontend performance, and help raise the bar for code quality, testing, security, and observability.
  • Cross-Functional Collaboration: Partner with Product, Design, and Customer Success to translate business problems into sound technical solutions that deliver measurable outcomes.
  • AI-Augmented Development: Leverage AI-assisted tooling to accelerate delivery, and contribute ideas on where AI capabilities can add genuine value to the product.
  • Agile Delivery: Work effectively in an iterative, fast-paced environment - shipping frequently and adapting quickly.
  • Incident Response: Participate in resolving production incidents and contribute to post-incident reviews that prevent recurrence.

Requirements
  • 5+ years of professional software engineering experience, with meaningful full-stack scope.
  • Solid experience with Ruby on Rails, including ActiveRecord, background job processing, API design, and service-oriented patterns.
  • Strong Javascript proficiency, including SPA architecture, component design, state management, and front-end performance.
  • Track record of owning and delivering complex features or projects end-to-end.
  • Strong RESTful API design experience, including versioning, authentication, and third-party integrations.
  • Solid database fundamentals, particularly MySQL or similar relational databases, including schema design and query optimization.
  • Ability to participate in technical discussions and contribute to architectural decisions.
  • Experience mentoring junior or mid-level engineers and contributing to a culture of technical excellence.
  • Familiarity with marketing or customer engagement platforms - campaign management, personalization engines, A/B testing, or equivalent - is a plus.
  • Good communication skills: able to explain technical concepts clearly to both technical and non-technical audiences.
  • Experience with agile development methodologies and working within cross-functional product teams.
  • Familiarity with AI-assisted development tools (e.g., GitHub Copilot, Cursor, Claude Code) and interest in evaluating where AI/ML capabilities can be integrated into product features.

Bonus Points For
  • Experience with Go (Golang), Vue.js, and/or Node.js.
  • Experience integrating LLM APIs (e.g., Anthropic, OpenAI) or building AI-powered product features.
  • Familiarity with AI/ML concepts such as embeddings, vector search, retrieval-augmented generation (RAG), or fine-tuning.
  • AWS experience, including deploying and scaling cloud-based applications.
  • Hands-on experience with OpenSearch for search or analytics.
  • Use of Redis for caching, session management, or background jobs.
  • Exposure to Kafka or similar messaging systems in high-throughput environments.
  • Familiarity with Docker for local development or production deployment.
  • Experience with CI/CD pipelines and deployment workflows.
  • Exposure to GDPR, CCPA, or similar data privacy regulations.
  • Background in B2B SaaS products or high-volume transaction systems.

Benefits
As a full-time employee, Recurly offers competitive benefits programs, perks and options designed to fit your needs and the needs of your family. We offer medical, dental and vision benefits and a menu from which to choose options that work best for you and eligible dependents. We also offer life insurance, short and long-term disability, hospital indemnity, critical illness coverage, employee accident protection, health savings account (HSA) with company contribution & flexible spending account (FSA) options, employee assistance program, Legal and Pet Insurance.
Compensation range: $120,000 - $156,000 per year
Other perks may include:
401(k) Retirement Plan and company match
Flex Time Off
Company Events
Training/Development
Tuition reimbursement
Commuter benefits
Volunteer opportunities
Recurly is an equal opportunity employer and all qualified applicants will receive consideration for employment without regard to gender, age, race, religion, or any other classification which is protected by applicable law. Recurly is committed to providing reasonable accommodations for candidates with disabilities in our recruiting process. If you need any assistance or accommodations due to a disability, please let us know at talent@recurly.com

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