Top Senior IT Jobs in Denver & Boulder, CO

Administer and support Microsoft 365, Entra ID, Intune, Purview and related cloud tools; troubleshoot hardware, software, network and endpoint issues; support business applications; maintain backup/disaster recovery; partner on security, compliance, and infrastructure projects; mentor junior staff and document procedures for a distributed, multi-office workforce.

Build and lead DESRI's internal IT function: define IT strategy and governance, manage infrastructure and enterprise applications (Microsoft 365, HRIS), lead cybersecurity and compliance, oversee vendor and budget management, establish service delivery and Help Desk, and scale a global IT team to support distributed operations and remote employees.

Provide tier 1-2 IT support across hardware, software, SaaS apps, and remote connectivity; administer identity and access management; maintain device fleet via MDM; build automation for lifecycle workflows; support SOC 2/ISO/HIPAA evidence and access reviews; document workflows; partner with People, Security, and Engineering on cross-functional projects.

Lead global enterprise IT operations for a large Intelligence Community infrastructure. Ensure 24/7 availability, incident response, operational governance, ITIL-based processes, metrics and reporting, drive continuous improvement, coordinate CONUS/OCONUS sites, and manage distributed Tier 2/3 teams supporting servers, storage, networking, virtualization, PKI, patching, monitoring, and data center operations.

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.

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.

Serve as first-line IT support for hardware, software, networking, and enterprise applications. Triage and resolve support tickets, manage onboarding/offboarding, administer Okta and endpoint management (Intune, Jamf), maintain device health and access controls, collaborate with Security and Engineering, document processes, and improve support workflows to ensure a secure, compliant, and user-friendly hybrid work environment.

Provide senior-level remote IT support and operations for a distributed workforce: troubleshoot macOS/Windows/Linux/mobile, manage onboarding/offboarding, administer identity (Rippling/Okta) and MDM, maintain asset inventory, build AI-driven automations (Console.com, Risotto, Unthread), support SOC 2/HIPAA/ISO compliance, write runbooks in Notion, and contribute to the IT roadmap while mentoring the team.

Lead and execute enterprise IT initiatives including system migrations, integrations, and companywide upgrades. Administer Active Directory/Azure AD/Entra ID, manage endpoints via MDM (Intune), support servers, cloud (AWS), network and VPN access, and enforce security controls (MFA, endpoint compliance). Mentor helpdesk staff, develop documentation and SOPs, run application rollouts, and improve processes through root-cause analysis.