Service Desk Associate- Security Specialist

Thornburg is a global investment firm delivering on strategy for institutions, financial professionals and investors worldwide. The privately held firm, founded in 1982, is an active, high-conviction manager of fixed income, equities, and multi-asset solutions.

As an independent firm, Thornburg can take on a wide range of opportunities, explore ideas thoroughly and work across strategies to deliver consistent risk-adjusted outperformance over the long term. The firm attracts free-thinking professionals who are eager to pursue investment outcomes beyond the confines of popular wisdom. From nimble operational capabilities to principles and actions fitting of a global citizen, Thornburg’s world-class investment platform and team are aligned on strategy to serve investors.

Job Summary

The Service Desk Associate – Security Specialist is a hands-on technical role focused on protecting and strengthening the security of employee workstations, applications, and user-level technology.

This position sits within the Service Desk and is designed as an entry-to-mid level role for individuals who want to build a career in cybersecurity and infrastructure. It provides practical, real-world experience with endpoint security, Microsoft security tooling, automation, and incident response fundamentals - serving as a natural stepping stone to more advanced roles, including System Administrator – Security Specialist.

Duties and Responsibilities

Endpoint & User Security (60%)

• Manage and improve desktop and application patching using Microsoft Endpoint Manager (Intune) and Defender for Endpoint.
• Monitor and administer endpoint protection controls, including antivirus, device compliance, and security baselines.
• Support email and browser security using Microsoft Defender for Office 365, Netskope, and other tools.
• Maintain accurate endpoint and application inventory, ensuring visibility and compliance across devices.
• Assist with endpoint-level security incidents, including investigation, containment, and remediation, in coordination with Infrastructure and Security teams.
• Apply and maintain secure configuration standards for desktops and user applications.
• Support employee cybersecurity awareness initiatives, including phishing simulations and user education.
• Use scripting and automation (PowerShell preferred) to improve security consistency and reduce manual effort.

Service Desk & Operational Support (40%)

• Support Service Desk operations during peak periods, vacations, staffing gaps, and as needed.
• Troubleshoot and resolve end-user issues with a security-first mindset.
• Identify opportunities to improve Service Desk workflows, processes, and documentation.
• Create and maintain knowledge base articles, how-to-guides, and support documentation.
• Collaborate with teammates to deliver a high-quality, professional end-user support experience.

Collaboration, Exposure & Growth

• Participate in endpoint, EUC, and security-related IT projects.
• Work closely with other IT teams to align endpoint security with enterprise standards.
• Coordinate with vendors and internal partners for troubleshooting and support.
• Participate in Service Desk shift or on-call rotations as required.
• Gain exposure to enterprise security tools, frameworks, and operational practices that support career progression into senior infrastructure and security roles.

How You'll Succeed

• Customer-focused with a professional and empathetic approach.
• Strong ethical judgment appropriate for a financial services environment.
• Collaborative team player with clear communication skills.
• Detail-oriented with strong follow-through.
• Motivated to learn and take on increasing technical responsibility.
• Positive, proactive mindset with an interest in cybersecurity and infrastructure.