Top Full-Stack Engineer Jobs in Denver & Boulder, CO

Build and maintain fullstack features for GitLab’s post-purchase subscription lifecycle, including renewals, billing accounts, auto-renewal, overages, reconciliations, and subscription visibility. Partner with Product and Design, integrate billing and customer systems, write reliable tested code, support safe rollouts and monitoring, participate in code reviews and incident response, and reduce technical debt and architectural risk.

Develop and maintain full-stack data analytics applications, interactive dashboards, visualization tools, backend services, RESTful APIs, and database integrations. Integrate data sources, analytical models, and processing services into secure, scalable user-facing applications. Collaborate with data scientists, engineers, analysts, and government stakeholders while supporting testing, troubleshooting, performance optimization, CI/CD, and deployment activities.

Develop and sustain full-stack data analytics applications for a U.S. Government platform. Build responsive user interfaces, dashboards, visualizations, RESTful APIs, microservices, database integrations, and analytical capabilities. Collaborate with data scientists, engineers, analysts, and government stakeholders to deliver secure, scalable software. Support agile development, troubleshooting, performance optimization, testing, CI/CD, deployment, and platform integration.

Build and maintain scalable backend platforms for capital orchestration, transaction reconciliation, collateral movement, data pipelines, and business workflows. Collaborate with engineers, product managers, designers, analysts, and business stakeholders to design systems, write tested code, improve reliability, and deliver projects incrementally. Support production operations through monitoring, metrics, debugging, code reviews, and on-call responsibilities.

Staff Software Engineer responsible for technical strategy, scalable full-stack systems, team operations, reliability, monitoring, code quality, and talent development. The role involves building customer-facing card experiences and backend services using Python or Kotlin, AWS, MySQL, Spark, Kubernetes, and React-based frameworks. The engineer will own features end to end, collaborate cross-functionally, manage technical risks and trade-offs, support on-call health, and apply AI safely to improve development and customer experiences.

Develop and scale full-stack web applications for Toast’s digital storefront, including online ordering and website products. Design solutions, improve performance and usability, collaborate with Product and Design, run experiments, resolve critical issues, and contribute to API design, testing, and cross-team product integration.

Build and ship custom full-stack programs for AI labs and product teams, including capture flows, task logic, data pipelines, validation, redaction, provenance, and delivery across web, mobile, and backend systems. Partner directly with technical customers to scope ambiguous requirements, determine what to reuse or build, ship production code, establish data quality processes, and turn repeatable custom solutions into core platform capabilities.

Develop and maintain satellite command-and-control, mission-planning, mission-data processing, and data-analysis software using Elixir. Collaborate on architecture, design, and code reviews while working across engineering disciplines. The role requires functional programming, resilient and fault-tolerant distributed systems, front-end development, live-system debugging, and strong communication. Preferred experience includes Elixir OTP, React, TypeScript, OAuth2, network protocols, databases, and distributed-system monitoring.

Develop and operate CrowdStrike’s internal cloud management platform and mission-critical CI/CD pipelines. Build APIs and UIs using Go and TypeScript, improve developer productivity, integrate tooling, maintain cloud-native infrastructure, and support secure, highly available software delivery systems. Collaborate with development, infrastructure, security, and SRE teams, ensure SOC2-aware processes, and participate in on-call operations.

Provides technical leadership on complex, high-impact engineering projects from design through launch. The role involves architecture, company-wide initiatives, engineering excellence, mentoring technical leaders, and establishing standards for scalable, reliable, secure, observable systems. The engineer will collaborate across teams, communicate complex technical topics, and apply customer-focused decision-making and A/B testing techniques.

Develop and ship phased software projects for Affirm’s mobile card acquisition team. Collaborate with product, design, and analytics stakeholders; build web and mobile applications and scalable APIs; monitor operational metrics; support availability and on-call efforts; participate in code reviews, interviews, and team development.

Develop and launch scalable full-stack search systems using JavaScript, TypeScript, Python, or Kotlin. Collaborate with engineers and stakeholders, balance delivery speed with system reliability, debug code, participate in code reviews, write tested and extensible software, and contribute to team growth and communication.

The Senior Full-Stack Engineer will manage client relationships, design integration solutions, and ensure seamless delivery and optimization of technical workflows, while leveraging AI for efficiency.

Build and launch scalable fullstack web applications and APIs for Affirm’s Ads Platform. Collaborate with product, design, analytics, and engineering partners to break projects into deliverable phases, make technical trade-offs, write tested and extensible code, monitor service metrics, support on-call operations, review code, and participate in team development and interviews.

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.

Performs systems integration, verification, validation, and hardware/software integration for an integrated air missile defense system. Supports development environments, VMware and virtual infrastructure, testing, requirements traceability, documentation, customer reviews, and operational deployment in the UAE. Applies DevOps practices, infrastructure-as-code, systems analysis, security, database, and Linux expertise in an agile environment. May support off-hours test events and travel to customer sites.

Performs full-stack systems integration, verification, validation, and hardware/software integration for an integrated air missile defense system. Builds development environments using hardware, software, virtual machines, and infrastructure-as-code; supports requirements reviews, testing, deployment, and operational-site integration in the UAE. Collaborates with distributed engineering teams and international customers while applying systems analysis, security, infrastructure, database, and software development expertise.

Develop and support IT architectures and full-stack solutions for classified Space systems. Responsibilities include architecture implementation, requirements mapping, systems integration, troubleshooting, root cause analysis, documentation, operational concept development, and alignment with enterprise standards. The role requires expertise in infrastructure, security, cloud, containers, virtualization, cross-domain systems, and software development, with onsite work, occasional travel, and off-shift support.

Develops and supports enterprise compute infrastructure products across on-premises, AWS, and Azure environments. Builds Infrastructure as Code, automated provisioning, DevSecOps pipelines, cloud and database solutions, and self-service capabilities. Performs security, performance, and availability testing; supports incident resolution, compliance, disaster recovery, and on-call operations. Provides technical guidance within Agile delivery teams.

Develops, integrates, deploys, and supports enterprise software and infrastructure solutions for Lockheed Martin’s Space division. Responsibilities include troubleshooting hardware and software, automating system administration, managing DevOps tools, provisioning virtual environments, deploying web and containerized applications, and ensuring security compliance in air-gapped environments. The role requires expertise in Linux, software architecture, DevSecOps, CI/CD, automation, and enterprise infrastructure.

Designs, develops, deploys, and sustains Windows infrastructure for an integrated air and missile defense system in the UAE. Responsibilities include Windows Server administration, Active Directory, virtualization, PowerShell and Ansible automation, cybersecurity remediation, infrastructure support, system integration, and collaboration with distributed agile teams and international stakeholders. The role is a full-time expatriate assignment for approximately two years, with possible extension.

Designs, develops, deploys, configures, patches, and sustains RHEL infrastructure for an integrated air missile defense system. Automates Linux provisioning and administration, implements DISA STIGs, remediates vulnerabilities, supports system integration and verification, and develops production-grade monitoring and security automation. The role collaborates with cross-functional teams, decomposes project milestones, documents operational procedures, and supports enterprise Linux services and PostgreSQL high-availability environments.

Designs, develops, deploys, and supports enterprise infrastructure for an integrated air and missile defense system. Responsibilities include VMware virtualization, server hardware, software-defined networking, infrastructure automation, cybersecurity remediation, security baseline implementation, system integration, and collaboration with distributed agile teams and international stakeholders. The role requires an approximately two-year expatriate assignment to the United Arab Emirates.

Deploys, configures, patches, secures, and sustains RHEL infrastructure for an integrated air and missile defense system. Automates Linux provisioning and administration, remediates security findings, supports system integration and verification, develops infrastructure solutions, and provides project-team support. The role collaborates in an Agile/Scrum environment and requires a two-year expatriate assignment to the United Arab Emirates.

Designs, develops, deploys, and sustains Windows infrastructure for an integrated air and missile defense system. Responsibilities include Windows Server and workstation administration, Active Directory and network services management, PowerShell and Ansible automation, VMware virtualization, cybersecurity compliance, vulnerability remediation, system integration, and infrastructure support. The engineer decomposes project milestones, collaborates with cross-functional teams, and helps deliver foundational and cybersecurity technology upgrades in an Agile environment.