Senior Systems Administrator; IM and Collaboration Security Clearance

Position: Senior Systems Administrator (IM and Collaboration) with Security Clearance
About Peraton Peraton is a next-generation national security company that drives missions of consequence spanning the globe and extending to the farthest reaches of the galaxy. As the world's leading mission capability integrator and transformative enterprise IT provider, we deliver trusted, highly differentiated solutions and technologies to protect our nation and allies. Peraton operates at the critical nexus between traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace.

The company serves as a valued partner to essential government agencies and supports every branch of the U.S. armed forces. Each day, our employees solve the most daunting challenges that our customers face. Visit  to learn how we're keeping people around the world safe and secure. Program Overview About

The Role We are seeking an experienced Senior Systems Administrator - Instant Messaging & Collaboration to lead the reliability, security, and strategic operation of the organization's real-time communication platforms. This role ensures high availability, strong governance, and an exceptional user experience across messaging, meetings, presence, and collaboration services. The ideal candidate has deep expertise in Microsoft Teams, and real-time messaging technologies, with the ability to troubleshoot complex issues and support enterprise-scale integrations.

Key Responsibilities
* Support the availability, performance, and operational stability of real-time collaboration platforms, including Microsoft Teams and Mattermost.

* Administer and optimize Teams workloads (chat, meetings, channels, apps, and voice where applicable).

* Manage Mattermost work spaces, channels, permissions, and integrations.

* Oversee platform configuration, upgrades, feature rollouts, and lifecycle management following established change and release management practices.
Real-Time Messaging & Integrations
* Support and maintain API-driven and Web Socket-based collaboration services, ensuring reliable real-time messaging, event delivery, and system connectivity.

* Partner with application development teams to support integrations, bots, webhooks, and custom applications using REST APIs, Web Sockets, and event frameworks.

* Monitor message throughput, connection stability, API performance, and overall service health.
Incident Response & Advanced Troubleshooting
* Lead resolution of high-impact incidents related to collaboration services.

* Act as the senior escalation point for outages, performance issues, and integration failures.

* Perform root-cause analysis and implement long-term corrective actions.
Security, Governance & Compliance
* Implement and enforce security, governance, and compliance controls across collaboration platforms.

* Manage identity integration, access controls, retention policies, and eDiscovery requirements.

* Ensure adherence to organizational security standards and regulatory requirements.

Automation, Documentation & Continuous Improvement
* Drive automation and standardization using administrative tools and scripting to improve operational efficiency and reliability.

* Develop and maintain operational documentation, runbooks, and recovery procedures.

* Identify opportunities for service improvement and proactively enhance platform performance and user experience.
Qualifications

Required Qualifications
* Bachelor's degree in information technology or related field, and 8 years of experience. 4 years of additional experience may be substituted in lieu of a degree.

* 5 years supporting enterprise collaboration or real-time messaging platforms.

* Strong hands-on experience with instant messaging and meeting technologies (e.g., Microsoft Teams, Mattermost).

* Deep understanding of real-time communication concepts (presence, signaling, Web Sockets, APIs).

* DoD 8140 IAT Level II certification (e.g., Security+).

* Active TS/SCI clearance.

Preferred Qualifications
* Microsoft 365, Teams, or collaboration platform certifications.

* Experience with scripting or automation (Power Shell, Python, or similar).

* Familiarity with compliance, retention, and eDiscovery requirements.

* Experience supporting bots, integrations, or custom collaboration applications.
SCA / Union / Intern Rate or Range Details Target Salary Range: $112,000 - $179,000. This represents the typical salary range for this position. Salary is determined by various factors, including but not limited to, the scope and responsibilities of the position, the individual's experience, education, knowledge, skills, and competencies, as well as geographic location and business and contract considerations. Depending on the position, employees may be eligible for overtime, shift differential, and a discretionary bonus in addition to base pay.

Benefits Statement:
Peraton offers eligible employees a variety of benefits including medical, dental, vision, life, health savings account, short/long term disability, EAP, parental leave, 401(k), paid time off (PTO) for vacation, and…