Top Senior IT Jobs

Provide Tier 2/3 deskside and remote support for Windows and Apple devices, handle imaging, deployment, asset management, IMACs, mobile device troubleshooting, VTC/Zoom setups, and escalate complex issues while documenting work in ITSM.

Lead and maintain enterprise on-premises and hybrid Microsoft infrastructure, networking, storage, and VoIP; manage 24x7 production systems, cloud services (Azure/M365), security, helpdesk operations, vendor relationships, documentation, and participate in on-call support and infrastructure modernization initiatives.

Provide onsite and remote frontline technical support for desktops, laptops, mobile devices, printers, and peripherals. Troubleshoot hardware, software, and Windows-based systems; install and configure PCs and Microsoft Office. Manage incidents and service requests in ITSM tools, support onboarding/offboarding and equipment deployments, assist with A/V and meeting room tech, maintain asset inventory, coordinate vendor repairs, and follow IT security and change management procedures.

Provide 24/7 systems administration and incident response for US BICES-X. Administer VMware virtual environments, Windows Server and Microsoft stack (Exchange, SharePoint, SQL), SCCM, AD, and VDI. Implement DISA security policies, develop automation scripts, maintain system documentation, and support infrastructure design, monitoring, and performance tuning.

Provide 24/7/365 on-site Tier 1/2 mission support: monitor systems with SolarWinds/Splunk/Wireshark, triage hardware/software/network faults, support Layer 1-3 networking, respond to mission-critical incidents, perform checks and testing, maintain SOPs and configuration management using BMC Remedy.

Manage and oversee enterprise help desk operations supporting US Army INSCOM. Lead and mentor staff, resolve escalated incidents, maintain ticketing/problem databases, perform system imaging and administration, implement STIGs/IAVAs, monitor NOSC, and recommend process and technology improvements to ensure consistent IT service delivery.

Administer and maintain a large-scale NGDE thin client and virtual desktop environment, ensuring availability, performance, and security. Monitor infrastructure health, manage consoles/licensing/routing, support backend components, apply patches and firmware, troubleshoot complex authentication and routing issues, and maintain SOPs and documentation while collaborating with network, cybersecurity, and virtualization teams.

Senior systems administrator supporting US Army INSCOM. Installs, configures, and maintains UNIX and Windows systems; manages client/server/storage/network devices; provides Tier 1/2 troubleshooting and escalation; implements OS enhancements; integrates new technologies; supervises personnel assignments; performs on-site daily support and occasional travel.

Administer, secure, and sustain enterprise Exchange and M365 messaging across multi-network environments. Ensure high availability, mail flow, authentication/PKI, backup/recovery, patching, compliance, and migration/upgrade support. Troubleshoot complex routing, DNS, mobile access, and hybrid integration issues while maintaining documentation, SOPs, and remediation of vulnerabilities to support mission-critical communications.

Manage and maintain Windows and Linux servers in Azure Government; perform configuration, patching, monitoring, and troubleshooting; administer accounts and least-privilege access; integrate with Azure AD/on-prem AD and MFA; automate tasks with Ansible/PowerShell; apply DISA STIGs and compliance controls; maintain backups and DR/COOP testing; evaluate and migrate databases, address vulnerabilities, and support cleared personnel.

Provide frontline IT support: respond to user inquiries, log and resolve hardware/software/network issues, install/configure software, handle password resets and peripherals, maintain inventory, document solutions and knowledge-base articles, mentor junior staff, escalate complex issues, and follow security and IT policies (report incidents).

Operate, secure, and support company IT systems including account lifecycle, SaaS integrations, endpoint hardening, MDM/SSO, office networks, and IT automation. Collaborate cross-functionally to define IT/security policies, remediate misconfigurations, support incidents, and maintain documentation and runbooks to ensure reliable, compliant IT operations.

Lead and manage the IT support/help desk team, oversee ticketing and SLA adherence, escalate and resolve complex technical issues, onboard and train staff, allocate workloads, document solutions, ensure HIPAA-compliant practices, and drive continuous improvement across support functions.

Provide advanced desktop/system administration and hands-on end-user support for Windows environments and VDI. Troubleshoot complex hardware/software issues, perform OS and software installations/upgrades, manage desktop images, backups and recoveries, audit compliance, train users, mentor junior staff, and lead projects. Work requires TS/SCI clearance and on-site presence at the customer location.

Provide in-person, phone, and virtual end-user IT support for laptops and MMC devices: build, deploy, reimage, troubleshoot, repair hardware and software, document tickets, escalate to resolver teams, use digital monitoring tools, collaborate with engineering, participate in projects, and provide occasional after-hours support and travel as required.

Provide onsite and remote frontline IT support for desktops, laptops, mobile devices, printers, and peripherals. Troubleshoot hardware/software issues, manage Windows systems and Microsoft Office, handle incidents via ITSM tools, support onboarding/offboarding and equipment deployments, maintain asset inventory, coordinate vendor repairs, assist with A/V conferencing, and follow security and change management procedures.

Lead the end-to-end internal IT function, covering identity and access management, endpoint/device management, AI platform and SaaS administration, security/compliance support, office infrastructure, automation, and a 4–5 person IT team. Partner with Security, HR, Finance, and Engineering on audits, incident response, and tooling rollouts while driving strategy and hands-on execution.

Lead on-site IT for a manufacturing/tech center, owning IT/OT alignment, cybersecurity, AI-driven digitalization, service delivery, site projects, vendor management, and local IT team development. Build prototypes with low-code/AI tools, ensure compliance and business continuity, and act as the primary IT business partner to site leadership.

Lead IT operations and strategy for enterprise systems, cloud infrastructure, networks, servers, and business applications. Ensure 24/7 production support, implement monitoring and security, manage maintenance/patching/backups, document inventories and processes, coordinate cross-site support, recommend technology improvements, and recruit/lead IT staff while prioritizing and delivering multiple projects.

Provide on-site Tier 2 IT support for San Francisco and Bay Area offices, handling hardware, OS, SaaS, networking, user identity/access, onboarding/offboarding, AV and device provisioning. Resolve and document incidents in a ticketing system, participate in on-call rotation, maintain asset inventory and documentation, collaborate on IT projects, and promote security-first operations and self-service documentation.

Lead IT infrastructure and operations including servers, networks, storage, endpoints, and virtualization. Manage monitoring, patching, backups, disaster recovery, security/compliance (vulnerabilities, pen tests, regulatory), vendor/contract oversight, budgeting, automation, asset lifecycle, and mentor junior IT staff while aligning IT strategy with business needs.

Provide advanced end-user IT support and act as senior escalation for hardware, software, networking, authentication, and endpoint issues across Windows, macOS, and Linux. Lead onboarding/offboarding, identity and access management, automated deployments (PXE/Windows Deployment/Intune), incident response, mentoring, documentation, and process improvements. Participate in 24x7 on-call rotation and deliver recurring technology awareness training.

Provide on-site IT support for manufacturing, lab, and business environments: troubleshoot Windows/macOS devices, imaging, peripherals, Active Directory, manage assets/inventory, coordinate facilities/logistics, support mobility and printers, and provide L1 backup with 35% travel.

Manage overall IT and network operations for a large DoD contract: set strategies, policies, budgets, and procedures; develop and run network operations programs; lead dispersed teams to secure integrated and distributed networks; perform other assigned duties.

Provide frontline IT support for clinical and corporate users: manage phone/chat/ticket queues, troubleshoot Windows/macOS/iOS hardware and software, administer Microsoft 365 services (Exchange, SharePoint, Teams, OneDrive), monitor Entra ID and service health, automate with PowerShell, and collaborate with MSP to maintain secure, high-availability operations.