Senior Systems Engineer

Our valued client is seeking a Senior Systems Engineer (Principal-Level) for their team in Aurora, CO. This is a contract opportunity with the possibility of extension. All work will be performed on-site.

We are seeking a very senior, hands-on Sr. Systems Engineer for a contract engagement to provide deep technical expertise across core enterprise infrastructure.

This role is designed for a seasoned individual contributor who can quickly assess complex environments, architect practical solutions, and resolve high-impact issues with

minimal ramp-up.

This is not a junior augmentation role. You will be brought in as a trusted technical authority to stabilize, improve, and guide critical systems. You will mentor and train the

current system administrators on the existing technologies.

What You’ll Do

Advanced Systems Engineering andArchitecture

• Serve as a senior technical expert across the enterprise, Microsoft, and infrastructure

platforms

• Design, assess, and improve architectures involving:
• Microsoft 365 (Exchange, Entra ID/Azure AD, Teams, SharePoint)
• Active Directory (on-prem and hybrid)
• DNS, identity, and authentication services
• Windows Server platforms
• VMware virtualization environments
• Enterprise storage systems (SAN/NAS)
• Identify architectural risks and recommend pragmatic, supportable improvements

High-Level Troubleshooting & Incident Resolution

• Understand and document existing architecture; suggest improvements for

efficiency and security

• Act as an escalation point for complex, multi-layer infrastructure issues
• Troubleshoot across OS, identity, virtualization, and storage layers
• Perform root-cause analysis and implement durable fixes
• Quickly stabilize environments experiencing reliability or performance challenges

Operational Impact

• Improve documentation, standards, and operational consistency
• Partner with internal teams (security, networking, cloud, application) to unblock

progress

• Transfer knowledge to internal staff as needed

Required Experience & Skills

• 10-15+ years of hands-on enterprise systems engineering experience
• Deep, hands-on practical expertise in:
• Microsoft 365
• Active Directory (design, replication, trusts, GPOs)
• DNS and identity services
• Windows Server
• VMware
• Enterprise storage concepts and platforms
• Proven ability to diagnose and resolve complex infrastructure issues quickly
• Strong architectural judgment and systems thinking
• Excellent communication skills; able to explain complex issues clearly
• Comfortable operating independently with limited oversight

Ideal Contractor Profile

• Principal- or lead-level individual contributor background
• Has been “the escalation point” in prior environments
• Thrives in ambiguous or high-pressure situations
• Able to deliver value immediately in a contract setting

Contract Details

• Opportunity for extension based on performance and business need
• No expectation of people management

Compensation for this position starts at $60.00/hour and includes optional medical, dental, vision, 401k, PTO, and holiday benefits.