Top Tech Jobs & Startup Jobs in Denver & Boulder, CO

Develop, debug, and maintain scalable modeling and simulation software across heterogeneous HPC and Linux environments. Support users with workflows, applications, and system issues; write Fortran, C, C++, Bash, and Korn shell code; perform testing and configuration management; analyze existing code; mentor engineers and scientists; conduct code reviews; and create technical training materials. Work onsite with researchers, customer representatives, and technical staff in a cleared national security environment.

Performs information assurance and cybersecurity engineering for DoD and Intelligence Community systems. Responsibilities include RMF implementation, security authorization packages, SSP development, vulnerability and risk assessments, continuous monitoring, STIG hardening, POA&M remediation, compliance reporting, and security documentation. The role supports 24/7 operational and test environments, collaborates with engineering and security teams, and requires occasional after-hours support.

Provide RF systems engineering and hands-on hardware sustainment for RF ground and satellite communications systems. Troubleshoot outages, collect and analyze diagnostic data, manage requirements and baselines, develop workarounds, support integration and engineering changes, and recommend system/architecture improvements. Support occasional travel, after-hours response, and antenna/tower safety tasks.

Support systems engineering across the full lifecycle for classified aerospace/defense programs: requirements decomposition, architecture, interface definition, integration and test, verification/validation, MBSE artifacts, coordination with software/test/cyber teams, and configuration-controlled delivery in Agile environments.

Design, develop, test, and maintain Java-based microservices and satellite ground system software. Collaborate in Agile teams, apply DevSecOps and CI/CD, use AWS and containerization, troubleshoot and modernize multi-tiered systems, and deliver high-quality software.

Design, implement, and support platform infrastructure and automated CI/CD pipelines for a large, mission-critical program. Integrate security and compliance, collaborate with development teams, and provide operational support, documentation, and baseline control.

Administer, build, secure, and maintain Red Hat Linux systems supporting mission-critical capabilities. Troubleshoot with developers and engineers, perform patching, RPM packaging, performance tuning, networking, LDAP user management, and security hardening. Provide onsite installation support, occasional travel, after-hours maintenance/on-call support, and assist hardware installations.

Design, build, and maintain secure, highly available Azure cloud-native platforms and CI/CD pipelines for classified mission systems. Implement Infrastructure as Code, automation, monitoring, and security controls while supporting hybrid Windows environments and platform reliability.

Responsible for troubleshooting and restoring operational software, performing testing, integration, and delivery of new baselines, and conducting end-to-end analysis of complex real-time systems. Will support maintenance, documentation, and software integration efforts. Must hold an active transferable TS/SCI and CI polygraph and meet STEM degree and experience requirements.

Design and execute test plans for legacy and modern command-and-control systems; troubleshoot integration issues; resolve defects; ensure compliance with best practices; and produce detailed documentation and test reports while collaborating with engineering teams.