Top Backend Engineer Jobs in Denver & Boulder, CO

Design, build, and operate backend systems that serve millions globally, improve cloud infrastructure, and collaborate on new products while ensuring reliability and performance. Also involved in customer interactions to enhance service quality.

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.

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.

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.

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.

Design, build, test, and release scalable, concurrent backend systems and REST APIs for fund movements. Mentor junior engineers, lead complex projects, and ensure long-term stability and correctness at scale.

The Software Engineer will develop AI infrastructure and automation solutions, manage project execution, write high-quality code, and enhance system operations while fostering collaboration within the team.

Design and implement AI systems for customer support and compliance, architect solutions, mentor team members, and manage project deliverables.

As a Senior Software Engineer (Backend), you will develop backend services for music technology, enhance system performance, and mentor junior developers.

Design and implement AI systems for customer support and compliance, architect distributed systems, mentor team members, and develop foundational APIs.

The role involves designing, developing, and delivering high-quality software solutions, conducting code reviews, and debugging applications, with a focus on SaaS-based development and software quality.

Build and scale Zapier's execution engine to handle millions of daily runs: improve performance, reduce latency, design execution primitives, strengthen failure handling, and collaborate across teams on core system design.

As a Senior Software Engineer at Coinbase, you will build scalable systems, mentor junior developers, and drive large impactful projects while collaborating with teams on REST APIs. You will also work on redesigning foundational systems for future challenges.

Design and implement the core Risk platform architecture, manage projects, mentor team members, and write high quality code for Coinbase products.

Architect and develop distributed systems, manage projects, mentor team members, design foundational infrastructure components, and write high-quality code to meet customer needs.

Join Coinbase's Staking Validators team to operate and innovate on blockchain infrastructure, ensuring high performance and uptime for staking-related nodes, with an emphasis on cryptocurrency and community engagement.

The role involves developing and maintaining backend services for a blockchain platform, collaborating on integrations, troubleshooting challenges, and ensuring high-quality code.

Design, build, and operate low-latency indexing and streaming services. Lead initiatives to improve latency and reliability and collaborate on defining data contracts for SDKs and platform primitives.

In this role, you will upgrade blockchain nodes, implement automation for efficiency, and identify areas for investment to streamline services.

Lead technical delivery for a large engineering team, own and implement foundational backend systems at scale, define cross-org technical direction, and solve ambiguous product problems involving search, media, performance, and modern ML/LLM technologies.

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.