Top Backend Engineer Jobs in Denver & Boulder, CO

As a Back-End Engineer, you will design, implement, and maintain core infrastructure while ensuring performance, scalability, and reliability in a fintech environment.

As an Intermediate Backend Engineer, you'll design and develop security management capabilities, build scalable services and APIs, and collaborate with teams to enhance GitLab's security platform.

Develop core services using Golang and PostgreSQL, resolve feature issues, ensure software quality, and promote CI/CD practices while collaborating with teams.

Design and implement secure, robust, and scalable backend services for speech processing. Debug complex system issues and partner with Product teams to drive feature development.

Develop and support web services for digital life insurance enrollment, collaborating closely across teams to enhance platform capabilities. Responsible for the quality and maintainability of services, utilizing Python and Java, among other technologies.

The Senior GIS Back-End Engineer will design, build, and maintain geospatial infrastructure, manage spatial data, and support scalable GIS solutions. Responsibilities include troubleshooting Esri systems and collaborating on new analytic capabilities.

Lead the technical strategy for GitLab Secrets Manager, focusing on secure, multi-tenant secrets management architecture, integration with OpenBao, and collaboration across teams.

You will tackle AI challenges, develop scalable software and collaborate with teams to enhance healthcare navigation using AI solutions.

As a Senior Backend Engineer, you will build APIs and backend systems for an observability platform, focusing on performance, security, and delivering customer results. You will collaborate with product teams and apply best engineering practices.

Develop and implement AI solutions and backend services, mentor colleagues, and enhance systems reliability while addressing complex challenges in crypto compliance and customer support.

As a Senior Backend Engineer, you will develop and maintain deployment infrastructure for GitLab's self-managed customers, ensuring secure and scalable operations across various environments.

As a Senior Backend Engineer, you will design and maintain scalable backend systems, implement integrations, and ensure system stability, focusing on revenue optimization and automation.

As a Software Engineer II in the Credit Decisioning team, you will design and develop backend systems, collaborate with cross-functional teams, and support project delivery and operations.

Build and scale backend and full-stack systems for enterprise customers: design APIs and platform services, improve observability and reliability, respond to incidents, integrate AI features, and collaborate cross-functionally to deliver high-impact enterprise capabilities.

Design, build, and scale highly performant, highly available backend systems for advanced crypto trading instruments. Architect robust services supporting multiple instrument types, collaborate with product and design, and deliver high-value, observable features for traders worldwide.

Design and maintain backend systems for stablecoin payments, lead projects, collaborate with teams, and mentor junior engineers in a fast-paced environment.

Design and build partner-facing APIs and the Powered by Zapier platform, improve developer tools and docs, ensure scalability and reliability, collaborate cross-functionally, lead technical initiatives, and mentor teammates to support partner integration and embedded automation.

As a Staff Software Engineer, you'll design and build scalable data infrastructure, optimize data pipelines, and collaborate across teams to deliver effective streaming solutions, leveraging technologies like Kafka and Spark.

The Staff Product Backend Software Engineer will architect technical solutions, shape product direction, mentor engineers, and influence engineering standards while participating in on-call rotations.

Lead a team of 15-20 engineers, shaping technical direction for consumer-facing product solutions while actively coding and mentoring to drive high-quality outcomes.

The Backend Software Engineer will develop data ingestion pipelines, implement observability tools, and provide technical support while improving team collaboration.

The Backend Engineer will design and maintain backend systems, contribute to system reliability and performance, and collaborate cross-functionally while taking ownership of projects.

As a Staff Software Engineer, you'll architect and develop a next-generation book and records system, manage projects, mentor team members, and work collaboratively on technical vision implementation.

Design and develop a Go-based instrumentation service for GitLab, ensuring data integrity and supporting product development teams with analytics and instrumentation capabilities.

The Backend Engineer II will participate in the software development lifecycle, collaborate with teams, troubleshoot issues, and mentor junior members.