Senior Systems Engineer (L3 - Network-Focused)

11 hours, 33 minutes ago
Contract
Senior
DevOps and Infrastructure
GXA

GXA

GXA is an award-winning IT consulting and managed services provider based in Richardson, Texas. With a focus on empowering businesses in Texas, GXA offers a range of IT solutions including managed IT services, business IT consulting, disaster recovery ...

Internet Software & Services
11-50
Founded 2008

Description

  • Serve as the final escalation point for complex service and infrastructure issues across client environments.
  • Diagnose and resolve advanced issues across Microsoft 365, Azure, identity services, Active Directory, Exchange, servers, virtualization, endpoints, and networking.
  • Own troubleshooting end-to-end from root cause analysis through permanent resolution.
  • Act as the lead escalation engineer for advanced networking and firewall issues.
  • Design, configure, and troubleshoot on-prem, cloud, and hybrid infrastructure.
  • Resolve complex tickets directly to improve customer experience and shorten resolution times.
  • Identify recurring issues and drive permanent fixes to reduce repeated escalations.
  • Produce clear documentation and resolution notes that improve L1/L2 troubleshooting capability.
  • Partner with service leadership to improve standards, workflows, and overall service velocity.
  • Mentor or guide L1/L2 engineers through documentation, shadowing, and technical support.

Requirements

  • Senior-level MSP support experience with the ability to independently resolve complex tickets across multiple technology domains.
  • Proven experience working as an L3 or senior escalation engineer in a managed services environment.
  • Strong hands-on experience with Microsoft 365 and Azure, including identity, access, and core services.
  • Experience troubleshooting Active Directory, Exchange, Windows Server, and common server roles.
  • Experience with virtualization platforms such as VMware, Hyper-V, or equivalent.
  • Experience with endpoint management and standard MSP tooling, including RMM, PSA, backup, and security tools.
  • Solid practical networking experience, including firewall configuration and troubleshooting, VLANs, routing, switching, VPNs, and subnetting.
  • Strong documentation and communication skills for both technical and non-technical audiences.
  • Deep expertise in networking and firewalls within MSP client environments, preferred.
  • Hands-on experience with Fortinet, SonicWall, Meraki, or similar firewall platforms, preferred.

Interested in this position?

Apply directly on the company website

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