Senior Systems Administrator

Thrive is a rapidly growing technology solutions provider focusing upon Cloud, Cyber Security, Networking, Disaster Recovery and Managed Services. Our corporate culture, engineering talent, customer-centric approach, and focus upon “next generation” services help us stand out amongst our peers. Thrive is on the look-out for individuals who don’t view their weekdays spent at “a job” but rather look to develop valuable skills that ignite their passion and lead to a CAREER. If you’re attracted to a “work hard, play hard” environment, seeking the guidance, training and experience necessary to build a lucrative career, then welcome to THRIVE!!

Position Overview

Senior System Administrators provide remote support across diverse, multi-tenant environments, handling escalated incidents and complex service requests. The role involves advanced troubleshooting, implementing changes, coordinating with other teams, and serving as an escalation point for engineers within the team, while maintaining clear client communication. Thrive seeks technically proficient professionals with strong verbal and written skills, a desire to learn across all aspects of IT, and the ability to thrive in a fast-paced, collaborative environment with broad technical exposure and opportunities for growth.

Responsibilities

• Take technical ownership of assigned clients, including escalated issues, ensuring resolution of infrastructure- and business-critical problems, often coordinating with clients and their vendors.
• Perform third-level support and advanced troubleshooting for escalated incidents, including network, server, and workstation issues.
• Evaluate client infrastructure, systems, software, and processes to identify deficiencies and recommend improvements or projects to meet client needs.
• Lead major incident outages, conduct post-incident reviews, and drive corrective actions, including root cause analysis and documentation.
• Identify systemic and pervasive issues, perform trend analysis, and implement permanent solutions to prevent future problems.
• Design and validate multi-tenant solutions, including identity management, networking, security, disaster recovery, zero trust, hybrid AD/Entra, Intune baselines, conditional access, identity governance, complex networking/firewall policies, SASE/SWG, and SIEM integrations.
• Benchmark, tune, and optimize systems for performance, capacity, and scalability.
• Create and maintain documentation, network diagrams, change control approvals, and knowledge base content; write and review changes for complex tasks following established processes and industry best practices.
• Develop and maintain automation and operational tools, including PowerShell modules, RMM policies, deployment pipelines, compliance checks, and monitoring improvements.
• Deliver training, mentor junior engineers, and contribute to team readiness and process improvement initiatives.