Systems Administrator

Socket.dev; Chesterfield (MO); On-site; USD 90,000 - 120,000; Full time

Job summary

Silgan Plastics is seeking a Systems Administrator in Missouri to manage enterprise infrastructure, including Windows servers, virtualization, storage, and cloud services. The role emphasizes stability, security, and performance of critical business systems.

The ideal candidate has 7+ years of systems admin experience, strong communication, and a drive for modernization. You will collaborate with IT Operations to deliver reliable technology solutions and support across the organization.

Qualifications

• Bachelor's degree preferred; equivalent experience considered.
• 7+ years of progressive systems administration or infrastructure engineering.
• Experience supporting enterprise environments across multiple locations.

Responsibilities

• Infrastructure Administration – Windows Server, Active Directory, DNS/DHCP, and virtualization.
• Microsoft 365 and Entra ID administration, security policies, licensing, and access controls.
• Storage management with Pure Storage; monitor health and capacity.
• Security & Compliance – assist with security hardening, audits, and incident response.
• Project Delivery & Continuous Improvement – lead or participate in migrations and deployments.
• Operational Support – Tier III escalation and on-call as required.

Skills

Strong communication

Customer-focused

Problem solving

Leadership

Collaboration

Education

Bachelor's Degree in Computer Science, Information Systems, or related field

Tools

VMware vSphere

Microsoft 365 Administration

Microsoft Entra ID

Windows Server Administration

Active Directory / Group Policy

DNS, DHCP

Pure Storage

Microsoft Azure Services

Backup and Disaster Recovery

PowerShell Scripting

Endpoint Management

Job description

Position Summary

The Systems Administrator is responsible for the administration, maintenance, support, and continuous improvement of the organization\'s enterprise infrastructure. This role provides technical expertise across servers, virtualization, storage, identity management, and Microsoft cloud technologies while ensuring the stability, security, and performance of critical business systems.

The ideal candidate possesses 5+ years of direct systems administration experience and demonstrates effective communication skills, a customer-service mindset, forward-thinking problem-solving abilities, and a passion for continuous improvement. This individual will serve as a technical leader within the IT Operations team, driving modernization initiatives and partnering across the business to deliver reliable, scalable, and secure technology solutions.

Responsibilities

• Infrastructure Administration – Administer and support Microsoft Windows Server environments; manage Active Directory, Group Policy, DNS, DHCP, and related domain services; maintain enterprise virtualization platforms (e.g., VMware vSphere); monitor and optimize server performance, availability, and capacity planning; implement and maintain disaster recovery and business continuity solutions; perform system upgrades, patch management, and technology lifecycle management.

• Microsoft 365 Cloud Administration – Administer Microsoft 365 services including Exchange Online, Teams, SharePoint, and OneDrive; support Microsoft Entra ID administration, identity governance, conditional access, and authentication technologies; participate in cloud adoption and modernization initiatives; manage user provisioning, licensing, security policies, and role-based access controls.

• Storage Administration – Administer and support enterprise storage environments including Pure Storage platforms; monitor storage health, performance, replication, and capacity utilization; develop and execute storage improvement and optimization strategies.

• Security & Compliance – Maintain system security configurations and assist with cybersecurity initiatives; support vulnerability remediation efforts and security hardening activities; participate in security audits, compliance assessments, and incident response efforts; ensure adherence to IT governance, policies, and standards.

• Project Delivery & Continuous Improvement – Lead or participate in infrastructure projects such as migrations, upgrades, consolidations, and system deployments; evaluate emerging technologies and recommend improvements that increase reliability, security, efficiency, and business value; identify opportunities for automation and process optimization; document technical procedures, architecture, standards, and support knowledge.

• Operational Support – Serve as a Tier III escalation point for complex infrastructure issues; collaborate with help desk, network, security, and application teams to resolve incidents and prevent recurring issues; participate in on-call support and after-hours maintenance activities as required.

Qualifications

Education

• Bachelor\'s Degree in Computer Science, Information Systems, or a related field (preferred).
• Equivalent combination of education and relevant experience will be considered.

Experience

• Minimum of 7 years of progressive experience in Systems Administration or Infrastructure Engineering.
• Experience supporting enterprise environments with multiple locations and diverse business operations.

Technical Skills

Experience with any combination of the following technologies:

• VMware vSphere
• Microsoft 365 Administration
• Microsoft Entra ID
• Windows Server Administration
• Active Directory / Group Policy
• DNS, DHCP
• Pure Storage
• Microsoft Azure Services
• Backup and Disaster Recovery Solutions
• PowerShell Scripting and Automation
• Endpoint Management Platforms

Other Skills

• Strong communication and interpersonal skills with the ability to collaborate across technical and non-technical teams and build trusted relationships throughout the organization.
• Forward-thinking and strategic mindset with the ability to anticipate infrastructure needs, evaluate emerging technologies, and recommend solutions that support business objectives.
• Continuous improvement mentality with a focus on reliability, security, automation, and service delivery.
• Exceptional problem-solving and analytical skills to identify root causes, develop effective solutions, and drive issues to resolution.
• Ownership and accountability in managing critical systems, projects, and operational responsibilities while maintaining quality and reliability.
• Customer-focused approach with a commitment to delivering excellent service and maintaining positive relationships with internal stakeholders.
• Strong organizational and time management skills to manage multiple priorities in a fast-paced environment.
• Collaborative attitude with a willingness to share knowledge and mentor peers.

EEO, Accessibility, and Legal Notices

Silgan is an Equal Opportunity Employer. We consider applicants for all positions without regard to race, color, religion, sex, national origin, age, marital status, or the presence of a disability, which would not prevent the performance of essential job duties with, or without reasonable accommodation of any other protective status. Silgan is a drug-free workplace.

The above job description is meant to describe the general nature and level of work being performed; it is not intended to be construed as an exhaustive list of all responsibilities, duties and skills required for the position. All job requirements are subject to modification to reasonably accommodate individuals with disabilities. Employment is always subject to Silgan\'s rights as employer, including the right to end employment in accordance with Provincial Law.