Top Backend Engineer Jobs in Denver & Boulder, CO

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.

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.

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.

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

The Senior Backend Engineer will design and implement key SaaS features, focusing on data modeling and API performance, while collaborating with a senior development team to enhance engineering operations.

As a backend engineer, you will enhance data collection systems to ensure reliability and scalability, working closely with engineering and mission teams.

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.

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

Design, build, test, and roll out backend features for Toast's payments platform. Deliver scalable, secure APIs, collaborate with PM/UX and cross-functional teams, implement automated tests, monitor releases, and participate in design and code reviews.

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

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.

As a Software Engineer I, you will design and implement features for Affirm's underwriting platform, collaborating with teams to balance speed and quality while ensuring system reliability.

As a Staff Software Engineer, you will lead technical strategy and architecture for the Finhub Tooling platform, driving AI initiatives and mentoring engineers to enhance operational efficiency across multiple teams.

As a Senior Backend Engineer, you will work on enhancing the GitLab DevSecOps platform, driving innovation while collaborating with team members. You will be expected to embrace AI capabilities to improve productivity and efficiency.

Build and maintain data onboarding pipelines and automation to extract, transform, validate, and import retailer data from legacy POS systems. Optimize performance, ensure data quality, and collaborate with onboarding, product, and operations teams to scale retailer onboarding.

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.

Lead backend engineering for high-volume, event-driven pipelines that power institutional reporting, billing, tax outputs and statements. Build and scale services in Go, design cloud-native systems, write well-tested code, and collaborate cross-functionally to deliver product and technical roadmaps that support revenue and trust for large institutional clients.

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.

Design, implement, and maintain integrations and services for billing, payments, and accounting systems. Collaborate with product teams, draft technical and testing plans, and develop automated end-to-end and unit tests to ensure production reliability.

The Senior Backend Engineer II will design, build, and maintain backend services for financial workflows, collaborating with product and engineering teams to enhance system reliability and performance.