Top Backend Engineer Jobs in Denver & Boulder, CO

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.

Lead architecture and implementation of high-throughput, distributed backend systems for agentic AI and MCP servers. Drive cross-team platform strategy, mentor engineers, own complex multi-quarter projects, and ensure reliability, performance, and operational excellence across microservices and event-driven systems.

The Backend Engineer II will design, build, test, and maintain backend services for Openly's insurance platform, collaborating on API creation and integration with external services while contributing to architectural decisions.

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

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

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 Back-End Software Engineer will maintain and modernize the Rails stack, improve internal tools, reduce third-party dependencies, and ensure infrastructure scalability.

The Software Engineer II will develop and launch backend systems, collaborate on projects, support operational metrics, and engage in team growth activities.

Design and implement financing products and features, create new tools and APIs, collaborate with teams, and ensure efficient financial operations.

The Senior Backend Engineer will develop innovative features for Xodo Sign and maintain the existing codebase while collaborating closely with the development team.

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.

The Senior Back-End Engineer will build cloud-native back-end services, APIs, and microservices for a health technology platform, focusing on scalability, security, and compliance.

As a Backend Engineer, you will design and implement core infrastructure for Vannevar's platform, ensuring standards for data processing, security compliance, and performance. You will collaborate with various teams to enhance shared infrastructure and lead technical initiatives.

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.

The Senior Software Engineer will develop money management tools, collaborate with cross-functional teams, and mentor junior engineers.

Build and maintain scalable backend systems for managing staked digital assets. Collaborate with teams to develop services using Golang and ensure high quality, well-tested code to meet business needs.

The Backend Engineer will develop intricate backend systems, build performant APIs, and contribute to technology innovation at Entefy.

As a Senior Backend Engineer, you'll collaborate with a cross-functional team to build features for a Digital Asset Manager, tackle complex technical issues, and apply web best practices in a rapidly evolving environment.

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 role involves leading the technical design and implementation of complex financial products, ensuring a low-latency trading experience, defining technical strategy, and mentoring junior engineers. Strong collaboration across teams is essential.

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

As a Senior Back-End Engineer, you'll develop and maintain our US Sports platform, coaching junior engineers and collaborating with stakeholders to ensure system reliability and scalability.

The Staff Software Engineer will lead the design and development of scalable access control solutions for Identity and Access Management. Responsibilities include architecting authorization systems and mentoring engineers, ensuring high-quality, high-scale platform solutions.

As a Senior Backend Engineer, you'll develop and enhance authentication strategies, improve access management, and ensure security for GitLab users, focusing on scalable solutions.