System Integrator (MS Exchange)

Systems Integrator (MS Exchange)

Clearance: ACTIVE TS/SCI w/ACTIVE POLY

Exempt/Non-Exempt: Exempt

Location: Herndon, VA (On-Site)

Position Overview:

We are seeking a highly skilled and detail-oriented Systems Integrator (MS Exchange) to support and maintain enterprise-level messaging infrastructure within a secure, mission-critical environment. The ideal candidate will have hands-on experience managing on-premises Microsoft Exchange environments (2016 or newer) and will play a key role in ensuring the reliability, performance, and security of email services supporting operational users.

Key Responsibilities:

• Administer, maintain, and support on-premises Microsoft Exchange environments (Exchange 2016 or newer), ensuring high availability and optimal system performance

• Perform incident troubleshooting, root cause analysis, and break-fix support for messaging-related issues across the enterprise

• Monitor system health, conduct routine health checks, and proactively identify and resolve performance or capacity concerns

• Execute routine maintenance activities including patching, updates, backups, and system optimization to ensure platform stability

• Support day-to-day operational sustainment of messaging services, ensuring minimal disruption to end users

• Implement and maintain security best practices in alignment with policies governing cleared and classified environments

• Collaborate with cross-functional IT teams to support infrastructure integration, upgrades, and modernization efforts

• Maintain system documentation, standard operating procedures (SOPs), and configuration baselines

Required Qualifications:

• Active TS/SCI clearance with Polygraph (required for consideration)

• Demonstrated experience administering Microsoft Exchange in an on-premises environment (Exchange 2016 or newer)

• Strong troubleshooting skills with the ability to diagnose and resolve complex technical issues

• Experience supporting enterprise IT environments with a focus on uptime, reliability, and performance

• Familiarity with monitoring tools and health reporting system

• Understanding of security and compliance requirements within cleared or regulated environments

• Strong communication skills and ability to work effectively in a team-oriented, mission-driven setting

Preferred / Nice-to-Have Skills:

• Exposure to or familiarity with cloud hosting environments (e.g., Azure, AWS)

• Experience with Microsoft 365 (Exchange Online, hybrid environments, or migrations)

• Knowledge of hybrid Exchange deployments and cloud integration strategies

• Experience with automation or scripting (e.g., PowerShell) to support system administration tasks

• Work Environment:

• This role supports a secure, high-visibility environment requiring adherence to strict security protocols and operational standards

• Candidates must be comfortable working in a structured, compliance-driven setting with mission-critical service expectations

Stillwater is an Equal Opportunity Employer

All qualified applicants will receive consideration for employment without regard to race color religion sex sexual orientation gender identity national origin disability age veteran status or any other protected class. If you need assistance with the application process due to a disability, please contact us at View phone number on click.appcast.io.

Stillwater is an Equal Opportunity Employer

Stillwater Human Capital is an Affirmative Action and Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, age, veteran status or any other protected class. If you’d like to view a copy of the company’s Affirmative Action policy statement, please contact the Human Resources Department.

If you require assistance with the application process due to a disability, please contact us at View phone number on click.appcast.io.

Equal Employment Opportunity Posters.