Top Software Engineer Jobs in Denver & Boulder, CO

Develop and test Java-based C2BMC missile defense applications across the full software development lifecycle. Responsibilities include architecture and requirements development, design artifacts, coding, reviews, integration and testing, agile execution, issue resolution, and performance optimization. The role also involves collaborating with industry partners, documenting test activities, deploying integration processes, and mentoring junior engineers. Work is fully onsite in Colorado Springs or Huntsville and requires an active U.S. Secret clearance.

Build, optimize, and maintain software systems using AI while collaborating across disciplines on healthcare technology. Develop distributed, event-driven systems, learn new languages and frameworks, and protect user privacy through data security and HIPAA-compliant practices. The role works with AWS, Kubernetes, and large-scale medical datasets in a fast-paced, mission-driven environment.

Develop and scale full-stack software that calculates and delivers restaurant employee pay, including tip pooling, wage calculations, earnings retrieval, and payroll delivery. Responsibilities include designing reliable services, participating in code reviews and architecture discussions, influencing technical roadmaps, and collaborating with product, design, and engineering teams. The role requires backend development, modern web technologies, databases, distributed systems, messaging, microservices, and a strong focus on precision and production reliability.

Develop Android system applications for Toast’s device management platform, focusing on background services, device policy enforcement, setup, firmware and app updates. Support new hardware and OS upgrades, expand automated testing with Robot Framework, investigate production issues, and collaborate with product, hardware, QA, and software teams. The role requires strong Android development skills in Java or Kotlin, Android architecture libraries, debugging tools, and source control.

Architect and build a high-performance trading platform for active traders. Develop responsive web interfaces integrating real-time market data, low-latency execution workflows, and advanced trading tools. Collaborate with cross-functional engineering teams on large-scale initiatives, emphasizing scalability, performance, API quality, maintainability, developer experience, and end-user usability.

Develops and supports Windows-based applications, implementing features, fixing bugs, and maintaining platform functionality. Responsibilities include unit and integration testing, documentation, full-stack debugging across operating systems, databases, applications, and networks, and applying secure, high-performance, highly available design practices. The role independently solves technical problems, collaborates on pragmatic solutions, mentors teammates, and contributes to ongoing technical and product knowledge growth.

Develop and maintain native iOS applications using Swift and SwiftUI for DraftKings’ financial platform. Responsibilities include building user-facing features, integrating APIs, managing data and state, optimizing performance, monitoring crash analytics, participating in code reviews and testing, and troubleshooting reliability issues. The role collaborates with product, design, analytics, and engineering teams to deliver scalable, compliant mobile experiences.

Develops, integrates, tests, maintains, and supports Java-based software systems and mathematical algorithms for Boeing’s C2BMC missile defense applications. Responsibilities include software architecture, requirements decomposition, interface development, design documentation, coding, debugging, performance optimization, agile execution, integration and testing, operational support, and technical issue resolution. The role collaborates with systems engineering, integration and test teams, and industry partners while supporting full software lifecycle activities for ballistic missile defense systems.

Build and launch backend identity decisioning systems that validate consumer identity and satisfy KYC regulations. Collaborate with Product, Compliance, Auth, Fraud, Analytics, and engineering teams; decompose projects, write tested and extensible code, monitor system metrics, support availability and on-call operations, debug code, participate in reviews, and contribute to technical decisions and team development.

Develops and maintains software requirements, architectures, algorithms, APIs, backend services, and user interfaces for SATCOM mission-planning systems. Supports Agile and DevSecOps development across design, integration, testing, and deployment, including CI/CD automation, vulnerability scanning, code reviews, and performance optimization. The role works with space and ground systems, geospatial visualization, databases, Kubernetes, and modern front-end technologies. It requires active Secret clearance, U.S. citizenship, full-time onsite work in Colorado Springs, and up to 10% travel.

Build and deploy full-stack healthcare financial products used by millions of patients. Develop AI- and ML-powered features, integrate LLMs, enhance an AI billing assistant, and create patient payment solutions. Collaborate with product, design, and partner engineering teams to deliver production-ready software. Contribute to technical planning, coordinate complex development efforts, mentor peers, and maintain high standards for testing, code quality, efficiency, and technical debt management.

Develop and deploy customer-focused web, mobile, and backend applications across the full software stack. Design major features, contribute to architecture decisions, conduct code reviews, and ensure secure, high-quality implementations. Collaborate with stakeholders and cross-functional teams using Agile and SDLC practices. Manage version control, CI/CD, environments, and releases; maintain automated test coverage and perform root-cause analysis. Build and optimize relational data solutions using SQL Server, including complex queries, stored procedures, and performance tuning.

Design, build, deploy, and support scalable Java microservices on AWS. Provide technical leadership, architectural direction, code reviews, troubleshooting, proof-of-concept development, and cross-functional collaboration. Work with high-throughput data, messaging systems, distributed architectures, observability, and AI-assisted development tools. Participate in on-call support, mentor engineers, lead architectural initiatives, and deliver reliable SaaS platform features.

Develop and support software for satellite radiometric calibration, imaging sensor commissioning, and space operations. Responsibilities include service architecture, reliability monitoring, CI/CD integration, automated testing, operational troubleshooting, cloud-based distributed systems design, and collaboration with scientists and software teams. The role supports production and test environments, investigates data anomalies, and advances calibration operations for satellite imagery and geospatial data products.

Software Engineering Interns join a cross-functional team to design, develop, test, review, and release software features used by millions of users. The role involves AWS infrastructure, system design, code reviews, CI/CD, REST APIs, microservices, databases, and responsible use of AI development tools. Interns participate in a full-time 12-week hybrid program in Denver, including team projects and professional development sessions.

Develop and maintain application software using C++, contributing to requirements analysis, software design, coding, testing, and technical documentation. The engineer will follow established development processes, create requirements and design artifacts, prepare test plans, and collaborate with senior team members while working independently when needed.

Own the development and maintenance of large-scale React Native applications for iOS and Android. Lead architecture improvements, React Native upgrades, native module development, performance optimization, automated testing, CI/CD reliability, and production debugging. Collaborate with cross-functional product pods, contribute to technical discovery and architecture, mentor engineers, and raise engineering standards while delivering scalable, maintainable mobile experiences.

Build and scale low-latency ad-serving software handling billions of daily auctions. Responsibilities include developing data- and model-driven features, optimizing algorithms and architectures, reducing cloud costs, extending observability, supporting distributed infrastructure, participating in on-call rotations, and documenting systems and incident procedures.

Design, build, and operate foundational developer infrastructure across CI, build systems, deployment orchestration, and test platforms. Improve build speed, deployment safety, and test reliability while owning services end to end, including SLOs, observability, and on-call responsibilities. Partner with engineering teams to address platform pain points and lead cross-cutting technical projects through production.

Develop and maintain distributed spacecraft ground control software in Elixir, including satellite command and control, mission planning, mission data processing, and data analysis systems. Participate in architecture, design, and code reviews while collaborating across engineering disciplines. The role involves solving greenfield problems involving resilient, fault-tolerant, concurrent, and real-time distributed systems.

Lead design and scale of Python-based UI/API/embedded automation frameworks with CI/CD integration for video/OTT testing. Build lab governance, deploy field-level network emulation, triage complex production defects, drive release readiness, adopt AI-driven testing and virtualization, and coordinate cross-functional stakeholders and vendors to optimize lab capacity and reliability.

Develop and maintain scalable control-plane software for DigitalOcean’s network products. Responsibilities include building APIs and microservices, implementing and optimizing services, troubleshooting customer issues, supporting existing products, improving development processes, and contributing to architecture and engineering best practices. The role involves end-to-end SDLC ownership, CI/CD deployment, distributed systems, containerized workloads, and collaboration across networking teams.

Build and scale mission-critical tips, earnings, and payroll platforms for restaurant employees. Own systems end to end, lead complex projects from design through deployment, improve reliability and correctness, collaborate with product and design, review code, mentor engineers, and deliver scalable backend services that affect employee pay and product revenue.

Lead development of scalable Java backend applications and high-availability cloud services. Design architectures, REST APIs, databases, caching systems, and distributed session infrastructure. Mentor engineers, drive technical initiatives, address performance and scalability challenges, and uphold quality and automation practices for endpoint management products.

Lead backend engineering strategy for Affirm’s international Identity team. Design and launch highly available distributed systems supporting KYC, user lifecycle management, and identity decisioning. Drive technical planning, cross-functional collaboration, operational excellence, monitoring, testing, and on-call readiness. Establish engineering quality standards, influence architecture, mentor team members, and deliver scalable systems using Python or Kotlin, AWS, MySQL, Spark, and Kubernetes.