Top Software Engineer Jobs in Denver & Boulder, CO

Develop and ship full-stack web and mobile experiences across Affirm’s consumer app and website. Collaborate with product, design, analytics, and engineering teams to break down projects, make technical decisions, write tested and extensible code, launch scalable APIs, monitor service health, support on-call operations, review code, and participate in team development and interviewing.

Build SDKs, self-service apps, and reusable abstractions for Coinbase's data platform. Develop data integration and processing tools, enable observability and security (cataloging, lineage, access controls), and collaborate with analysts, data scientists, and engineers to scale and operationalize data pipelines and models.

Boeing seeks motivated C2BMC Systems Software Engineers to design, develop, maintain, and test Java applications for missile defense systems, support agile lifecycle processes, and mentor junior engineers.

The Software Engineer will develop Java-based applications, support the software development lifecycle, and mentor junior engineers in a missile defense project.

Build full-stack web applications and containerized microservices for defense and intelligence customers. Develop front-end and back-end services using APIs or message buses, employ observability tools, follow Agile and CI/CD practices, and collaborate on distributed teams. Must hold active TS/SCI clearance and work on-site.

Design, develop, and maintain full‑stack web applications and containerized microservices for defense and intelligence customers. Build front-end and back-end services, integrate APIs/message buses, use CI/CD, monitoring, and collaborate on distributed Agile teams to deliver mission-focused software.

Build and scale consumer-facing mobile and web applications and backend services. Own features end-to-end across frontend and backend, optimize databases and queries, integrate third-party APIs, implement algorithms for risk and transaction evaluation, improve reliability and CI/CD, and contribute to testing, monitoring, and internal tools to support customer operations.

Design, develop, and maintain full-stack web and backend microservices for defense/intelligence customers. Build containerized services, front-end applications, and API/message-bus integrations using observability tools and CI/CD in an Agile, distributed team environment.

Design, develop, and maintain full-stack web applications and containerized microservices for defense/intelligence customers. Build frontend and backend services, integrate APIs or message buses, use CI/CD, and collaborate on Agile teams while operating in an on-site cleared environment.

Build full-stack web applications and containerized microservices for defense/intelligence users. Develop front-end (React/Vue) and back-end services (APIs/message bus), use CI/CD, observability tools, and collaborate in Agile teams on mission-focused signal and image processing software.

Design, build, and maintain front-end and back-end components for containerized microservices supporting defense and intelligence users. Work on APIs or message-bus integrations, implement software engineering best practices, participate in CI/CD and Agile processes, and collaborate with distributed teams.

Design, implement, and maintain front-end and back-end components for containerized microservices. Work on signal/image-processing software for defense/intelligence customers, participate in Agile CI/CD teams, and collaborate across distributed teams.

The Software Engineer will develop tools for data migration from relational databases to MongoDB, collaborating with teams to implement high-quality backend code.

Develop and improve MongoDB’s distributed database networking and observability components. Responsibilities include writing production-level C++ code, enhancing performance, availability, scalability, and resource efficiency, integrating observability frameworks, leading medium-sized projects, collaborating across the product lifecycle, and participating in code reviews and technical design. The role requires strong software architecture fundamentals and an interest in networking, observability, and computer systems internals.

Designs, develops, tests, and architects complex flight software for space systems. Responsibilities include writing maintainable code, collaborating on requirements, managing changes with version control, conducting code reviews, troubleshooting issues, documenting processes, and mentoring engineers. The role also provides technical leadership and contributes to innovative mission, spacecraft, and payload-control software solutions.

Join as a Software Engineer contributing end-to-end to Palantir products (Foundry, Gotham, Apollo). Write high-quality code, collaborate with cross-functional teams, engage with customers to understand problems, and iterate from design to shipping while learning from a dedicated mentor.

Contribute code to Palantir products (Gotham, Foundry, Apollo) as part of a small team. Participate across the product lifecycle, collaborate with cross-functional partners, learn from a mentor, and build scalable features used by diverse customers.

As a Software Engineer, you'll develop software using Ruby, Javascript, and support AWS infrastructure. Responsibilities include maintaining and building applications, contributing to high-end software releases, and mentoring other engineers.

The Software Engineer II role involves designing, developing, and testing software for space systems, ensuring high-quality code and collaboration within a team.

As a Fullstack Software Engineer, you'll design, develop, and maintain scalable frontend and backend systems while collaborating across teams.

Develop scalable platforms, services, and internal tools for Revenue Cycle Management, supporting payments, claims submission, and operational workflows. Partner with engineering, product, design, operations, and business stakeholders to improve efficiency, reliability, and cost effectiveness. Drive software development through planning, execution, measurement, maintenance, and continuous improvement while supporting responsive, secure, and highly available systems.

Lead architecture, modernization, and development of Group Insurance applications. Modernize mainframe monoliths into Java microservices and micro-frontends on cloud, mentor distributed Agile teams, collaborate with enterprise architecture, product owners and infrastructure, and enable test automation and integrations. Approximately 10% domestic travel.

Develop a platform for liquidity and loan collateralization. Responsibilities include building and integrating data pipelines, creating user experiences, and collaborating with teams for system design.

Lead UI architecture and design for responsive web applications; build reusable components with Angular/React/Vue and TypeScript/JavaScript; integrate UIs with RESTful microservices; enforce accessibility, security, testing, and CI/CD standards; mentor developers and collaborate with UX, backend, and DevOps teams in Agile environments.

Design, build, and maintain low-latency, highly available event-driven microservices for offers and bonus mechanics. Work full-stack on high-traffic systems, propose solutions, improve tooling, and deploy to distributed cloud infrastructure while collaborating with stakeholders and improving developer automation and CI workflows.