Top Senior Ruby Jobs in Denver & Boulder, CO

Lead design and delivery of backend-focused full-stack features for the Business Platform. Build APIs, data models, and reliable parsers, ensure secure resilient systems, mentor engineers, drive estimates and quality, collaborate with Growth on data-driven features, and integrate AI tooling into development workflows.

As a Senior Software Engineer, you will design and maintain systems, mentor team members, and improve both code quality and team practices.

Design and implement backend and real-time features in the GitLab monolith for portfolio planning at scale. Optimize PostgreSQL performance, evolve APIs (GraphQL/REST), build capacity planning and work-item hierarchies, create proofs of concept, maintain automated tests, support safe rollouts with feature flags and observability, mentor contributors, and participate in on-call and production troubleshooting.

Build and deploy scalable, maintainable full-stack applications, with a primary focus on backend development in Ruby and Ruby on Rails. Design APIs, data models, and performance optimizations while applying security best practices. Contribute to React and TypeScript frontend work, infrastructure, vulnerability fixes, and CI/CD improvements as needed. Collaborate cross-functionally to deliver reliable, high-quality product experiences.

Looking for a senior Ruby on Rails engineer to own complex projects and improve the product's technical direction, requiring extensive experience and a high standard of coding.

The Senior Full Stack Developer will build end-to-end solutions, collaborate in a remote environment, and write technical documentation. The role requires expertise in Ruby on Rails and various programming paradigms.

The role involves developing advanced web applications using Ruby on Rails, along with scripting and collaborating on continuous integration in a contract position.

Design, build, and maintain Ruby on Rails APIs and React frontends; architect and optimize PostgreSQL schemas and queries; manage Docker/Kubernetes services and Terraform IaC; implement PKI/mTLS and secure authentication; solve offline data serialization/synchronization; own CI/CD pipelines and support mission-critical field deployments.

Senior Ruby developer to design and implement scalable telecom solutions, collaborate with product and UX teams, ensure quality/performance, use agile practices, and work with NoSQL and mobile technologies where applicable.

Seeking a Ruby on Rails Engineer to design and implement features, enhance backend applications, and support operations in a collaborative team environment.