Teir 3 Support Engineer - Fully Remote - Long Term

ApolisUnited States🇺🇸United StatesPosted Oct 6, 2026

Quick Overview

Seniority

Mid Senior

Work mode

Remote

Location

United States

Posted

2 days ago

TCP/IPActive DirectoryDNS

Job Description

Position: Tier 3 Support Engineer
Location: Fully Remote
Duration: Multi-Year Contract

Number of openings 5
Work schedule: 9am – 5pm

Must haves:

Active Secret Clearance – (must be able to obtain/maintain)
Active IAT level 2 or IAT level 3 certification – must
HS Diploma with a minimum of 5 years of experience

Required Qualifications

Secret Clearance
DoD 8570 certification (Security+ or equivalent)
5+ years of experience supporting enterprise Windows environments
Experience providing Tier 3 desktop, endpoint, or service desk support
Strong troubleshooting experience with Windows 10/11 and Microsoft 365
Hands-on experience with Microsoft Intune and SCCM/MECM
Experience with Active Directory and Microsoft Entra ID
Experience supporting endpoint migrations, Windows upgrades, or hardware refresh projects
Strong understanding of networking fundamentals (DNS, DHCP, TCP/IP, VPN)
Excellent problem-solving and root cause analysis skills

Technologies core skills
Windows 10/11 Support & Troubleshooting-Advanced desktop support, OS issues, profiles, drivers, hardware
Microsoft Intune-Device management, Application deployment, Device policies
SCCM / MECM- Software deployment, Imaging, Endpoint management
Windows Migration Experience-Windows 11 migrations, Hardware refreshes, Device replacement projects
Active Directory / Entra ID-User accounts, Group Policy, Authentication issues
Microsoft 365 Support- Outlook, Teams, OneDrive, Microsoft 365 applications
Networking Fundamentals- DNS, DHCP, TCP/IP, VPN troubleshooting
Seeking a Tier 3 Service Desk Engineer to support a large-scale enterprise endpoint migration initiative. This individual will serve as the senior escalation point for complex desktop, endpoint, and Microsoft 365 issues while supporting Windows device deployments, migrations, and post-migration stabilization efforts. The ideal candidate will have strong experience supporting Windows environments, Microsoft Intune, SCCM/MECM, Active Directory/Entra ID, and enterprise endpoint management technologies.
Key Responsibilities

Provide Tier 3 technical support for complex endpoint, desktop, and migration-related issues
Troubleshoot Windows 10/11 operating systems, hardware, drivers, user profiles, and device configurations
Support Windows migrations, hardware refreshes, operating system upgrades, and endpoint deployments
Investigate and resolve deployment failures, application issues, and endpoint performance problems
Serve as the escalation point for Tier 1 and Tier 2 support teams
Support Microsoft Intune, SCCM/MECM, Autopilot, and other endpoint management platforms
Troubleshoot Microsoft 365 services including Outlook, Teams, OneDrive, and authentication-related issues
Support Active Directory, Entra ID, Group Policy, and user identity management
Assist with endpoint security technologies including BitLocker, Defender, Conditional Access, and device compliance
Create and maintain technical documentation, knowledge articles, and troubleshooting guides
Participate in migration cutovers, deployment activities, and post-migration support efforts