Sr. Systems Engineer

Description

The Sr. Systems Engineer is a senior-level technical role responsible for designing, implementing, managing, and supporting enterprise infrastructure across on-premise and cloud environments. This individual will lead by example as a highly technical expert with strong customer service, troubleshooting, and solution design skills. The role ensures the stability, scalability, and security of systems including Windows Servers, VMware, O365 / M365, collaboration tools (Zoom, MS Teams), VDI platforms (Citrix, Azure Virtual Desktop, AWS Workspaces, Secure Browser), and enterprise backup and disaster recovery systems.

This role also oversees monitoring, alerting, and observability practices to proactively maintain system health and quickly resolve issues. The Senior Systems Administrator / Engineer partners across IT and business teams to drive operational excellence, improve resiliency, and deliver an exceptional end-user experience.

Essential Functions

• Provision, configure, and maintain enterprise systems including Windows Server, VMware, and cloud-based infrastructure (AWS, Azure).
• Administer and support collaboration platforms such as O365 / M365, Zoom, and Microsoft Teams.
• Lead design, deployment, and support of VDI technologies (Citrix, AVD, AWS Workspaces, Secure Browser).
• Manage backup and disaster recovery solutions, ensuring data protection and compliance with business continuity objectives.
• Implement and manage monitoring, alerting, and observability tools (e.g., SolarWinds, Datadog, Splunk, ThousandEyes) to ensure proactive detection and resolution of issues.
• Provide Tier II / III escalation support for complex incidents, driving root cause analysis and long-term remediation.
• Perform system upgrades, patching, and configuration changes while following structured change management processes.
• Mentor and coach junior system administrators, providing technical oversight and ensuring task completion.
• Maintain and improve documentation, configuration standards, and SOPs.
• Collaborate with security teams to harden infrastructure, implement controls, and ensure compliance with policies.
• Drive innovation by researching, evaluating, and recommending new tools, technologies, and automation opportunities.
• Mentors and develops junior staff, building troubleshooting and solutioning capability within the team.
• Acts as a trusted technical advisor to IT leadership for system-related strategy and improvements.

Qualifications

Work Environment / Physical Demands

Standard office environment with regular use of computers and office equipment. Ability to lift and carry 40+ lbs and terminate Cat6 cabling as needed.

Position Type / Hours of Work

Full-time, Monday through Friday, 8am–5pm (flexible). After-hours or on-call availability required for escalations and critical support.

EEO Statement ACA provides equal employment opportunities (EEO) to all applicants for employment without regard to race, color, religion, gender, sexual orientation, gender identity or expression, national origin, age, disability, genetic information, marital status, amnesty, or status as a covered veteran in accordance with applicable federal, state and local laws. ACA complies with applicable state and local laws governing non-discrimination in employment in every location in which the company has facilities. California Privacy Notice   As an employer of California residents, we are dedicated to protecting your privacy rights. Any personal information you provide during the application process will be used solely for permitted internal purposes and will be handled in accordance with applicable privacy laws. By applying to this position, you consent to the collection, use, and disclosure of your personal information as described in our  Employee Privacy Notice .  Please note this job description is not designed to cover or contain a comprehensive listing of activities, duties or responsibilities that are required of the employee for this job. Duties, responsibilities and activities may change at any time with or without notice.