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

Designs, builds, and evolves production Android applications using Kotlin and modern Android frameworks. Owns complex features, architecture, modularization, testing, observability, performance, security, and release quality. Collaborates with product, design, backend, quality, and iOS teams; contributes to Swift or SwiftUI when useful. Provides technical mentorship, reviews code, supports incident response, and improves mobile engineering practices.

Implement, configure, maintain, troubleshoot, and optimize F5 BIG-IP load-balancing infrastructure across distributed data centers and LAN/WAN environments. Manage virtual servers, SSL/TLS, iRules, certificates, HA failover, upgrades, monitoring, and network diagnostics. Administer Cisco, Juniper, and Infoblox infrastructure; support routing, switching, DNS, IPAM, documentation, security compliance, maintenance windows, and on-call escalations. The role requires U.S. citizenship and eligibility for an agency security clearance.

Senior Software Engineer responsible for compliance validation, defect remediation, production migration support, monitoring, and operational documentation for a federal ESA Section 7 data integration platform. The role validates decision logic and consultation routing, develops migration runbooks and rollback procedures, resolves critical application defects, supports post-deployment operations, incorporates user feedback, and enforces code review and version control practices.

Conducts short- and long-term cyber threat analysis using open-source research to support offensive and defensive cyberspace operations. Produces DoD threat reports, warnings, and all-source intelligence assessments; supports cyber incident analysis, current operations, and strategic studies. Builds relationships with intelligence, defense, national, and inter-agency stakeholders while contributing expertise on global cyberspace operations and open-source cyber threats.

Plans and supports offensive cyberspace operations for the USSPACECOM Joint Cyber Center. Develops offensive cyber goals, policies, procedures, and capabilities; contributes to the Cyber Prioritized Effects List; and coordinates with Joint Staff, combatant commands, DoD components, and federal agencies to integrate capabilities into offensive cyber operations plans.

Designs, builds, and optimizes CI/CD pipelines across legacy mainframe and AWS environments. Automates workloads, integrates testing, maintains APIs, supports application integration, troubleshoots deployment issues, and improves DevOps processes. The role also supports software developers in an Agile/Scrum environment and contributes to modernization efforts bridging z/OS systems with cloud platforms.

Leads cloud platform maturity, architecture, modernization, continuous delivery, observability, incident response, and technical standards. Collaborates across software, infrastructure, security, networking, database, and operations teams while driving Agile improvements, executive communications, technical documentation, customer issue resolution, RFI responses, and strategic adoption of cloud, AI, analytics, and digital technologies.

Provides database administration and software development support for a DoD mainframe system using SUPRA PDM, MANTIS, COBOL, JCL, and z/OS. Maintains databases, copybooks, total-file views, and directories; supports platform modernization; evaluates and documents database environments; creates system interaction diagrams; and provides technical consultation and deliverable review. The role is fully remote and requires active Public Trust clearance and U.S. citizenship.

Supports software quality assurance for secure satellite ground communications systems. Designs and maintains Cypress-based automated tests for web interfaces, APIs, microservices, and system workflows; executes regression and functional testing; manages test data and defects; analyzes Linux logs; contributes to CI/CD integration, requirements reviews, and formal testing events; and prepares test reports while collaborating with multidisciplinary engineering teams.

Designs, develops, integrates, and optimizes laser-based free-space optical communications systems for SATCOM ground terminals. Responsibilities include requirements allocation, link-budget and performance modeling, atmospheric turbulence analysis, pointing/acquisition/tracking simulations, adaptive optics and wavefront correction, system integration, testing, and technical guidance. The role requires collaboration across engineering teams and compliance with DoD processes and guidelines.