Top Senior Backend Engineer Jobs in Denver & Boulder, CO

Develop and maintain software applications, collaborate in agile teams, mentor junior engineers, and enhance digital experiences using modern technologies.

As a Senior Backend Engineer, you will develop web services for the life insurance enrollment experience, collaborating with various teams to enhance the product roadmap and maintain service quality.

The Senior Backend Engineer will design, build, and maintain backend services and APIs for Openly's insurance platform, collaborating with various teams.

The Senior Backend Engineer will design and implement features for a SaaS product, focusing on backend systems, data modeling, and improving team capabilities.

Seeking a Senior Backend Engineer to develop backend systems for a Native AI platform, focusing on API design, data integration, and production software systems using Python and Django.

As a Senior Backend Engineer, you'll build features for AI integration, measure productivity changes, and support production operations in a SaaS environment.

The Senior Backend Engineer, AI Systems will design features for a SaaS environment, manage complex data, and work with AI models. Responsibilities include implementation, support for production, and collaboration within an agile team.

The Senior Back-End Engineer will develop and maintain the US Sports platform, mentor junior engineers, and collaborate with stakeholders to enhance a high-throughput betting system.

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.

Develop core backend services using Golang and PostgreSQL. Engage in peer code reviews, ensure software security, and advocate for CI/CD practices.

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

The Senior Backend Engineer will build production-grade backend services, own major projects from inception to deployment, and architect scalable solutions in a collaborative environment.

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.

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.

As a Senior Software Engineer on the PMI team, you'll design and develop backend systems, collaborate on API lifecycle, support team operations, and engage in team growth activities.

The Sr. Backend Engineer will develop the core platform and web app using Typescript and Node.js, focusing on performance optimization and UI/UX implementation.

Responsible for server-side ad insertion service, developing REST APIs, and managing distributed caches. Engage in agile teams with CI/CD practices.

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.

The Senior Backend Engineer will develop and maintain backend systems, collaborate on data-driven solutions, and enhance products using machine learning.

Design and scale core backend APIs and platform primitives for MCP, enabling AI agents to act across Zapier integrations. Build high-availability orchestration, logging, and interfaces between LLM clients and Zapier while partnering with product, design, and cross-functional teams to prioritize performance, security, and developer clarity.

Design and develop a data platform for sports entertainment, deliver features, maintain code quality, and research new technologies in a collaborative environment.

As a Senior Backend Engineer, you'll design scalable services and APIs, maintain systems, and collaborate with teammates to enhance the product experience.

The Senior Backend Engineer will design and maintain backend systems, build customer-facing features, and contribute to technical discussions. Responsibilities include translating product requirements into backend solutions and mentoring other engineers.

As a Senior Backend Engineer at Offchain Labs, you'll tackle complex distributed systems challenges, optimizing performance and contributing to the security and scalability of blockchain technology.