Top Software Engineer Jobs in Denver & Boulder, CO

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.

Leads software systems engineering for SATCOM mission planning supporting military NC3 networks. Responsibilities include requirements, architecture, API and backend development, user interface implementation, integration, testing, deployment, code reviews, security, performance improvements, mentoring, and Agile DevSecOps delivery. The role requires onsite work in Colorado Springs, active U.S. Secret clearance, U.S. Person status, and up to 10% travel.

Develop and maintain scalable SaaS solutions for financial reporting and capital markets customers. Responsibilities include full-stack development, system design, testing, monitoring, performance optimization, security, technical debt reduction, and collaboration with product managers, developers, and SRE teams. The role requires building reliable, secure, maintainable data-driven applications and contributing across the software development lifecycle.

Own and expand Gusto’s third-party integrations, building reliable Ruby on Rails and Sidekiq backend services that synchronize data with partner platforms. Evaluate traditional APIs and AI agent protocols such as MCP, shape the technical roadmap, collaborate with Product, Design, and Data Science, establish engineering practices, review code, and mentor engineers. The role requires end-to-end project ownership in an ambiguous, evolving domain.

Lead architecture and engineering for a new Provider Onboarding team. Build scalable, database-backed systems and custom tools supporting pricing, payments, client panels, and forms. Establish engineering practices, mentor senior engineers, guide cross-functional delivery, and oversee the full software development lifecycle from planning through post-launch maintenance. The role requires healthcare systems experience and ownership of complex, reliable products.

Lead architecture and development for a new Provider Onboarding engineering domain. Build scalable full-stack, database-backed applications and microservices supporting pricing, payments, client panels, forms, and provider workflows. Mentor engineers, establish design patterns, drive cross-functional delivery across the full software lifecycle, and improve operational reliability for a healthcare platform.

Lead the technical direction of Samsara’s shared geospatial platform. Build scalable data ingestion and processing pipelines, map data models, spatial APIs, map-matching and routing foundations, and reusable platform capabilities. Scale storage, querying, and computation for real-time features, consolidate team-specific solutions, mentor engineers, lead cross-team technical projects, and represent the company in the geospatial community.

Build and ship full-stack web and mobile experiences across Affirm’s consumer products. Break down projects, collaborate with product, design, and analytics teams, develop scalable APIs, write well-tested code, monitor service health, participate in on-call support, review code, and contribute to engineering growth and interviewing.

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.

Lead fraud decisioning engineering initiatives by architecting, building, launching, and maintaining complex backend systems. Drive cross-functional projects from definition through monitoring, write high-quality and resilient code, review technical work, mentor engineers, collaborate with Product, ML, Analytics, and Business teams, and contribute to hiring and interview design.

Leads architecture and development of scalable, high-availability software systems supporting millions of endpoints. Owns complex multi-team initiatives, makes technical decisions, mentors engineers, establishes engineering standards, and improves software quality. Requires deep Java development, distributed systems, API design, database engineering, system scalability, testing, and AI-assisted development experience.

Provides technical leadership for real-time RF sensor software development, integration, testing, and validation. Designs high-performance C/C++ systems, integrates signal-processing algorithms, debugs distributed and multithreaded applications, and transitions MATLAB/Python prototypes into production software. The role includes technical mentoring, customer and government stakeholder engagement, proposal development, documentation, system demonstrations, visualization tools, and approximately 10% travel for integration and field-testing activities.

Develops satellite ground-system software for command and control, mission planning, and data analysis. Performs full software lifecycle activities, including requirements, architecture, design, coding, testing, integration, documentation, and support. Works on a collaborative Agile team delivering reliable software in a primarily on-site environment. The role may involve office, laboratory, production floor, cleanroom, and outdoor or remote research settings.

Develops satellite ground system software for command and control, mission planning, and data analysis. Performs full software lifecycle activities, including requirements, architecture, design, coding, testing, integration, documentation, and support. Works onsite within an Agile, cross-functional team to deliver reliable software using cloud, web, frontend, backend, modeling, or embedded technologies. Clearance is not initially required, though eligibility for future submission may be necessary.

Develops satellite ground system software for command and control, mission planning, and data analysis. Performs full software lifecycle activities, including requirements, architecture, design, coding, testing, integration, documentation, and support. Works within an Agile, cross-functional team to deliver reliable capabilities for space and mission systems. The role is fully on-site five days per week and may involve travel between campuses or other locations.

Designs and develops Go microservices, Kubernetes controllers, and Linux networking software for HPE enterprise storage systems. Builds highly available distributed services, automates data-center network switch management and upgrades, develops software distribution services, and creates comprehensive automated tests. Troubleshoots customer issues, reviews designs and code, collaborates across storage and cloud teams, and mentors engineers.

Work directly with the founder to design and build core product features: integrations that pull license data, automation to file renewals/applications, data cleaning with AI, dashboard and alerting UX, and establish engineering practices for testing, deployments, and security. Term contractor role with potential conversion to full-time based on performance.

Build and operate an agentic SOC investigation platform using LLMs, including telemetry tools, investigation workflows, evidence-backed outputs, evaluation systems, and analyst productivity features. Develop secure, reliable, observable backend services that handle attacker-influenced data across customer environments. Collaborate with SOC analysts, researchers, technical leads, and product managers to translate investigative expertise into production agent behavior.

Join a small engineering team as a hands-on full stack developer. Accelerate frontend delivery, then take on backend services, infrastructure, and core capabilities. Own features from design through release and operational stability, collaborate with customer-facing engineers and founders, and promote effective AI-assisted development practices. The role requires strong backend-oriented full stack skills, product-launch experience, system design judgment, self-direction, and periodic travel to a California office.

Design and build backend services and distributed systems for a customer-facing no-code product. Improve query performance across large data warehouses, develop analytics and experimentation capabilities, explore real-time computation and data syncing, and apply generative AI to user workflows. The role also involves writing product specifications, collaborating directly with users, making long-term architecture decisions, and ensuring services remain robust, maintainable, and scalable.

Develop and maintain backend and frontend software for Blue Origin’s Lunar Apps team. Build features using Java, JavaScript, React, and AWS services; integrate data systems; participate in code reviews; communicate technical designs; and diagnose production issues. The role requires collaboration across complex aerospace systems and a focus on reliable tools for storing, analyzing, and automating engineering data in support of safe human spaceflight.

Build and scale full-stack software supporting emergency housing, nonprofit partners, housing supply, and fundraising. Collaborate with product, design, data, and operations teams to deliver program features, break initiatives into milestones, use research and data to guide improvements, and work within large codebases. The role requires designing APIs and services, delivering reliable software incrementally, and adapting quickly to changing global needs.

Own the end-to-end development of a secure SMS Adapter connecting retail and grocery store systems, beginning with BRdata, to Ottimate’s AP platform. Responsibilities include sync architecture, retries, conflict handling, local credential security, monitoring, testing, packaging, updates, installation, and deployment on Windows machines. The engineer will work directly with pilot customers to troubleshoot network, permissions, and data-access issues while evolving data models and integrations for additional store systems.

Build and maintain real-time, event-based systems for the Offers team. Lead the design and development of scalable services, create maintainable technical solutions, enforce code quality and governance, and own systems from development through production. The role involves mentoring developers, estimating work, documenting solutions, supporting business needs, and working across Go, TypeScript, React, SQL, Kafka, and GCP.

Designs, develops, tests, deploys, monitors, and operates large-scale distributed cloud services for Azure Arc. Builds software across agents, Kubernetes environments, and globally distributed Azure services using languages such as C# and Go. Responsibilities include automation, debugging, performance optimization, reliability improvements, telemetry, live-site operations, and cross-team collaboration. The role requires participation across the full software development lifecycle and ownership of features from design through production support.