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

Operate, secure, and sustain Windows server and client platforms across physical, virtual, and cloud environments. Perform Tier II/III troubleshooting and root cause analysis, manage AD/GPO/certificate services, maintain STIG/HBSS compliance, execute patching and vulnerability remediation, support virtualization, and coordinate with engineering and cybersecurity teams to ensure high-availability and secure enterprise operations.

Administer and sustain enterprise Active Directory forests, domains, trusts, replication, GPOs, DNS, and authentication services. Provide Tier 2/3 troubleshooting, domain controller deployments, schema updates, AD health monitoring, patching and STIG-based compliance, documentation, and cross-team collaboration to support secure identity services for mission systems.

Lead SAP S/4HANA data migration activities: extract, map, transform, load, validate, and reconcile master and transactional data using BODS, Migration Cockpit, LSMW/BDC and HANA SQL. Support mock loads, cutover execution, defect remediation, and collaborate with functional owners to cleanse and correct source data.

Provide Tier II/III systems administration for Windows and RHEL enterprise environments across multiple security enclaves. Troubleshoot applications and user performance, perform incident triage and resolution, remote desktop support, maintain AD/DNS/DHCP/LDAP services, use ticketing systems, participate in projects, and comply with DoD IA and clearance requirements.

Provide day-to-day IT and information assurance support for Collateral/SCI/SAP environments: maintain servers, firewalls, networks and security monitoring; perform account management, patching, hardware/software configuration, VTC administration, COMSEC/media control, prepare and review authorization packages, identify vulnerabilities and implement countermeasures, and support help desk and troubleshooting in a 24/7 shift setting.

Maintain and control enterprise IT infrastructure baselines and configuration items, manage version-controlled documentation repositories, track configuration changes, support change management and knowledge management to ensure consistent, auditable configuration across DoD/IC environments.

Senior Java Developer on an agile team to design, develop, test, and deploy enterprise-grade Java/J2EE web applications. Ensure performance, security, scalability, maintain documentation, review requirements, propose solutions, and improve SDLC through TDD, CI/CD automation, code reviews, and collaboration with architects and stakeholders.

Technical lead responsible for architecting, developing, deploying, and operationalizing AI/ML solutions (including RAG and agentic AI) in secure, regulated environments. Oversee model lifecycle, MLOps, validation, explainability, bias mitigation, and compliance with CMS cybersecurity/data governance. Advise stakeholders, support production transitions, produce ATO/configuration/incident documentation, and mentor junior engineers.

Administer, secure, and sustain enterprise virtual server environments (VMware, Hyper-V). Manage vCenter, hypervisors, VM lifecycle, templates, patching, STIG compliance, ATO documentation, performance monitoring, troubleshooting, and provisioning workflows to ensure stability and secure operations across multiple networks/enclaves.

Operate, maintain, and secure enterprise storage platforms (SAN, NAS, object, backup/replication) across multi-network and cloud-connected environments. Monitor performance, manage provisioning and access controls, support backup/DR, apply patches/firmware, remediate vulnerabilities, troubleshoot integrations, and coordinate with engineering and cybersecurity teams to ensure high availability and compliance.