System Administrator - Senior

ESM • Battle Creek, MI

2d • Onsite

About The Position

Enterprise Solutions and Management (ESM) is a rapidly growing government contractor that provides strategic IT services that meet mission needs for Defense and Federal customers. We are hiring a System Administrator- Senior to support an enterprise-level program within a federal environment. The Senior System Administrator ensures stable, secure, and efficient operation of critical IT infrastructure, including servers, networks, storage, applications, and communication links across multiple locations. Responsibilities include planning, installing, configuring, maintaining, upgrading, and optimizing systems; troubleshooting software, connectivity, and performance issues; and conducting capacity and vulnerability management. Ensures compliance with STIGs and RMF requirements and applies advanced technical expertise in Active Directory, VMware, Linux, Windows, application networking, load balancing, and fault-tolerant architectures. Improves operational efficiency through automation, scripting, and standardized procedures; provides system administrator and end-user training; and develops recommendations for technology improvements aligned with business and mission objectives. Provides local and remote support, leads system administrators in day-to-day operations, and provides senior-level troubleshooting, mentorship, documentation, patching, and incident response to maintain system availability and mission readiness.

Requirements

• Minimum of five (5) years of experience as a System Administrator in a Microsoft Windows operating system environment.
• Minimum of ten (10) years of specialized Information Technology experience, including at least four (4) years of hands-on experience installing, configuring, maintaining, and troubleshooting a variety of hardware and software solutions.
• Minimum of three (3) years of experience configuring and managing IBM MQ.
• Minimum of three (3) years of experience configuring and managing Windows Internet Information Services (IIS).
• Knowledge of server, storage, network, and virtualization technologies, including Active Directory (AD), DNS, DHCP, Group Policy (GPO), and VMware.
• Ability to maintain system availability, performance, and security through monitoring, patching, vulnerability remediation, firewall management, and compliance with DoD STIGs and RMF requirements.
• Skill in developing technical documentation, SOPs, network diagrams, and system images, as well as automating administrative tasks using PowerShell, Python, Ansible, or similar scripting tools.
• Ability to diagnose and resolve complex system and network issues and provide advanced Tier 2/3 technical support, including backup, recovery, and disaster recovery operations.
• Skill in documenting and communicating system status, incidents, outages, and corrective actions through formal technical reports and briefings.
• Ability to assess infrastructure requirements, recommend technology improvements, and collaborate effectively with technical teams and military and civilian stakeholders.
• Must hold a minimum Bachelor's degree of Computer Science or other relevant field of study.
• DOD 8140 baseline certification - IAT Level II
• Microsoft Windows Server Hybrid Administrator Associate credential
• IBM MQ v9.4 Administrator - Professional or newer certificate
• Top Secret Clearance

Nice To Haves

• Be a positive, self-motivated, and proactive person with the ability to adapt to change and tolerate stressful situations.
• Candidate must communicate effectively with team members, team lead, management, and government customer s.
• Must have the ability and desire to research and develop creative solutions to unique problems with minimal supervision.

Responsibilities

• Ensures stable, secure, and efficient operation of critical IT infrastructure, including servers, networks, storage, applications, and communication links across multiple locations.
• Plans, installs, configures, maintains, upgrades, and optimizes systems.
• Troubleshoots software, connectivity, and performance issues.
• Conducts capacity and vulnerability management.
• Ensures compliance with STIGs and RMF requirements.
• Applies advanced technical expertise in Active Directory, VMware, Linux, Windows, application networking, load balancing, and fault-tolerant architectures.
• Improves operational efficiency through automation, scripting, and standardized procedures.
• Provides system administrator and end-user training.
• Develops recommendations for technology improvements aligned with business and mission objectives.
• Provides local and remote support.
• Leads system administrators in day-to-day operations.
• Provides senior-level troubleshooting, mentorship, documentation, patching, and incident response to maintain system availability and mission readiness.

Benefits

• ESM provides equal employment opportunity to all individuals regardless of race, color, creed, religion, gender, age, sexual orientation, national origin or ancestry, disability, genetic information, veteran status, gender identification or any other characteristic protected by state, federal or local law.

What This Job Offers

• Job Type: Full-time
• Career Level: Senior