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Support Engineer III

Job in Reston, Fairfax County, Virginia, 22090, USA
Listing for: ISI Enterprises
Full Time position
Listed on 2026-09-11
Job specializations:
  • IT/Tech
    Cybersecurity, Cloud Computing: Infrastructure & Operations, IT Support, Systems Engineer
Salary/Wage Range or Industry Benchmark: 90000 - 100000 USD Yearly USD 90000.00 100000.00 YEAR
Job Description & How to Apply Below

Support Engineer III

The Support Engineer III role is a technical leader within the Support Department, reporting to the Manager of Support. This role is responsible for escalation support, administration of key systems, and providing leadership to Tier 1 and Tier 2 support engineers. This role will also involve complex troubleshooting of technical issues, creating and documenting processes, and automation and scripting, across both internal and client environments.

This position is collaborative with Cybersecurity, Compliance, and Program Management teams to ensure that infrastructure solutions align with security frameworks, operational best practices, and client needs.

Success in this role is measured by improvements in customer retention, profitability, and customer satisfaction, achieved through strong client communication, high-performing teams, automation, and technical mentorship.

Key Responsibilities
  • Technical Leadership & Tier 3 Support
  • Act as the highest-level technical escalation point for engineering-related client and internal issues.
  • Lead technical troubleshooting, root cause analysis, and proactive problem resolution.
  • Ensure clear, client-friendly communication of technical solutions to enhance customer trust and satisfaction.
  • Cloud & Infrastructure Engineering
  • Design, implement, and optimize hybrid cloud environments (Azure, AWS, GCC/GCC High) with a focus on automation, scalability, and performance.
  • Develop and implement automation strategies (Power Shell, Python) to streamline provisioning, monitoring, and system management.
  • Maintain 99.99% uptime and high availability through proactive infrastructure monitoring, redundancy strategies, and disaster recovery planning.
  • Ensure compliance with NIST 800-171, CMMC, and FedRAMP, partnering with Cybersecurity & Compliance teams
Collaboration & Cross-Department Support
  • Partner with Program Management (PMO) to execute client onboarding/offboarding and compliance readiness projects, ensuring technical feasibility and smooth transitions.
  • Work with Cybersecurity to align cloud and infrastructure security with NIST 800-171, CMMC, and FedRAMP standards. (Security implementation is managed by the Cybersecurity team.)
  • Support Compliance teams in audits by ensuring technical configurations meet compliance requirements.
  • Collaborate with Account Management & Client Success to educate clients on infrastructure modernization, automation, and cloud strategy improvements.
Operational Maturity & Continuous Improvement
  • Support the MSP Customer Success Managers to educate clients on infrastructure improvements, security hardening, and IT best practices.
  • Provide technical insights during project meetings and business reviews to ensure client expectations are met.
  • Enhance customer satisfaction by ensuring clear, structured technical communication.
  • Conduct knowledge-sharing sessions for Tier 1 & Tier 2 engineers, reducing Tier 3 escalations and improving team expertise.
Qualifications
  • U.S. Citizenship is required.
  • Must be eligible to obtain and maintain a U.S. Government security clearance.
  • Bachelor’s degree in computer science, Information Technology, or related field (or equivalent experience).
  • 6+ years of experience in IT engineering, with a focus on MSP/MSSP environments.
  • Strong expertise in Microsoft 0365 (GCC/GCC High preferred), including Entra, Exhange, Intune, Purview, Sharepoint, Teams.
  • Azure Entra, Infrastructure, Networking, Migration, Storage accounts (AWS a plus)
  • Proficiency with Active Directory and hybrid environments, including GPO and NPS.
  • Ability to support Mac, iPhone and supporting tools
  • Azure AI, Copilot, and other AI product support a strong plus
  • Advanced knowledge of networking (firewalls, VPNs, SD-WAN, SASE)
  • Windows/Linux infrastructure, and…
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