> Markdown version of [/jobs/ext/3354034-tier-iii-service-desk](https://www.wearedevelopers.com/jobs/ext/3354034-tier-iii-service-desk). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Tier III Service Desk - **Company:** Leidos, Inc. - **Location:** United States (Remote available) - **Experience:** Experienced - **Salary:** $48,100.0 - $86,950.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, User Authentication, Microsoft Azure, BitLocker Drive Encryption, Microsoft Outlook, Configuration Management, System Configuration, Data Migration, Dynamic Host Configuration Protocol, Domain Name System (DNS), Virtual Private Networks (VPN), System Center Configuration Manager, Networking Basics, Windows PowerShell, Azure Active Directory, Software Deployment, TCP/IP, User Environment Management, EndPointSecurity, Wi-Fi Technology, Enterprise Software Applications, Peripherals, Microsoft InTune, Microsoft Onedrive, Deployment Automation, 3-tier Architectures - **Published:** September 22, 2026 - **Apply:** https://www.clearancejobs.com/jobs/9182084/tier-iii-service-desk ## About the Role The ideal candidate will have strong troubleshooting skills across Windows endpoints, enterprise applications, identity, networking, device management, and endpoint security, along with the ability to diagnose and resolve issues that cannot be addressed through standard Tier 1/Tier 2 support processes. CLEARANCE REQUIREMENT: Must hold an active Secret security clearance prior to start. (US Citizenship required), * Requires High School Diploma or equivalent and 2+ years of prior relevant experience * 5+ years of experience in enterprise IT support, desktop engineering, endpoint management, or service desk operations. * Demonstrated experience providing Tier 3 / advanced technical support in a large enterprise environment. * Strong troubleshooting experience with Windows 10/11 endpoints and Microsoft 365. * Hands-on experience with endpoint management and deployment technologies such as Microsoft Intune, MECM/SCCM, Autopilot, Group Policy, and Active Directory/Entra ID. * Experience supporting enterprise endpoint migrations, hardware refreshes, operating system upgrades, or large-scale device deployments. * Strong understanding of networking fundamentals including DNS, DHCP, TCP/IP, VPN, Wi-Fi, and authentication. * Experience troubleshooting endpoint applications, drivers, peripherals, certificates, profiles, and system configuration. * Ability to analyze logs and system information to isolate complex technical issues. * Strong incident management, problem management, and root-cause analysis skills. * Excellent written and verbal communication skills. * Ability to work independently while collaborating effectively across technical teams. Preferred Qualifications * Experience supporting large-scale Windows 11 migrations or enterprise device modernization programs. * Experience with Microsoft Autopilot and modern endpoint management. * Experience with PowerShell scripting and endpoint automation. * Familiarity with Microsoft Entra ID, Conditional Access, Defender for Endpoint, BitLocker, and endpoint compliance. * ITIL certification or experience working within an ITIL-based service management environment. * Microsoft certifications related to endpoint administration, Microsoft 365, or Azure. * Experience working in a project-based migration or transformation environment ## Description We are seeking an experienced Tier 3 Service Desk Engineer to provide advanced technical support and operational expertise in support of enterprise endpoint migration initiatives. This role will serve as a senior escalation point for complex endpoint issues and will partner closely with Endpoint Engineering, Infrastructure, Security, and Service Desk teams to ensure successful migration activities and a stable end-user experience., * Provide Tier 3 technical support for issues associated with endpoint migration, deployment, provisioning, and post-migration stabilization. * Troubleshoot complex Windows endpoint issues involving operating systems, drivers, applications, profiles, authentication, networking, peripherals, and device configuration. * Support endpoint migration activities including device replacement, operating system upgrades, hardware refreshes, profile/data migration, application deployment, and user cutover. * Investigate and resolve migration failures, deployment errors, application compatibility issues, configuration problems, and recurring endpoint incidents. * Serve as the escalation point for Tier 1 and Tier 2 Service Desk teams and provide technical guidance and knowledge transfer. * Partner with Endpoint Engineering and other technical teams to identify root causes and develop sustainable remediation strategies. * Support endpoint management platforms such as Microsoft Intune, Microsoft Configuration Manager (SCCM/MECM), Autopilot, or comparable enterprise management technologies. * Troubleshoot Microsoft 365, Teams, Outlook, OneDrive, authentication, VPN, printing, and other business-critical endpoint services. * Assist with endpoint security controls, including device compliance, encryption, endpoint protection, and security policy troubleshooting. * Develop and maintain technical documentation, knowledge articles, troubleshooting procedures, and migration runbooks. * Analyze incident and migration data to identify trends, recurring failures, and opportunities for automation or process improvement. * Participate in migration waves, cutovers, hypercare, and other scheduled deployment activities, including occasional after-hours support when required. * Coordinate with vendors and third-party support organizations when escalation outside the internal environment is necessary. * Ensure incidents and service requests are accurately documented and resolved in accordance with established service management processes. ## Related Videos - [ZEISS & Microsoft - Building the Next Generation Medical Ecosystem in the Cloud](https://www.wearedevelopers.com/videos/424-zeiss-microsoft-building-the-next-generation-medical-ecosystem-in-the-cloud) - [Building a Cross-Platform BLE Client with Kotlin Multiplatform and Kable](https://www.wearedevelopers.com/videos/100250-building-a-cross-platform-ble-client-with-kotlin-multiplatform-and-kable) - [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go) - [Swapping a Data Warehouse at Runtime: Zero-Downtime Migration Without Changing a Single Client](https://www.wearedevelopers.com/videos/100311-swapping-a-data-warehouse-at-runtime-zero-downtime-migration-without-changing-a-single-client) - [Developer Tools for Microsoft Azure](https://www.wearedevelopers.com/videos/450-developer-tools-for-microsoft-azure) - [Security Pitfalls for Software Engineers](https://www.wearedevelopers.com/videos/726-security-pitfalls-for-software-engineers) ## Related Articles - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [What’s the Difference between a Junior, Mid, and Senior Developer?](https://www.wearedevelopers.com/magazine/238-what-s-the-difference-between-a-junior-mid-and-senior-developer) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs)