Senior Network/Infrastructure Administrator

About the Role

We are seeking a Senior Infrastructure Administrator to support and maintain a critical on-prem and hybrid infrastructure environment supporting approximately 850 users. This role is ideal for a well-rounded infrastructure professional who enjoys hands-on work across identity, servers, and networking, and who thrives in a small, collaborative IT team.
The position is primarily on-site at a Western Slope data center, with some flexibility after onboarding. Occasional travel to regional office locations is required for hardware work, projects, or emergency response.

What You'll Do

• Administer and support Active Directory Domain Services (AD DS), Group Policy, identity, and authentication services
• Support and troubleshoot authentication protocols and Certificate Services (internal CA / PKI)
• Administer and troubleshoot Cisco route/switch networking in a production environment, including hardware refreshes and cutovers
• Manage and support on-prem infrastructure, including servers, hypervisors, SANs, and supporting systems
• Troubleshoot complex issues spanning servers, networking, and identity, owning incidents end-to-end
• Monitor infrastructure performance, availability, and security; implement improvements as needed
• Perform OS, firmware, and security patching across infrastructure platforms
• Work closely with system administrators, application teams, and vendors during investigations and remediation
• Participate in audits, disaster recovery testing, and infrastructure planning initiatives
• Serve as a Senior technical resource and mentor to other team members when needed

Required Skills & Experience

• Strong hands-on experience with Active Directory Domain Services, Group Policy, LDAP, and authentication troubleshooting
• Experience with authentication protocols and Certificate Services / PKI
• Production experience with Cisco routers and switches
• Proven background administering on-prem infrastructure environments
• Strong troubleshooting skills across servers, networking, and identity systems
• Ability to work independently, make decisions with minimal supervision, and collaborate effectively with cross-functional teams
• 5+ years of infrastructure or network administration experience in multi-site environments
• Valid driver's license and ability to travel locally as needed

Nice to Have

• Azure / hybrid identity experience (Entra ID)
• VMware / vCenter and virtualization technologies
• Meraki networking, Wi-Fi, and access points
• Backup and replication solutions
• Experience in regulated or high-availability environments

Ideal Candidate Profile

This role is best suited for a "jack-of-all-trades" infrastructure professional-someone with solid, hands-on experience across many infrastructure disciplines rather than deep specialization in only one area. If you enjoy variety, ownership, and working close to the technology, this role offers long-term stability and meaningful impact.

Work Environment & Flexibility

• Standard business hours (8:00 AM - 5:00 PM)
• After approximately six months, the role is eligible for one scheduled remote day per week
• Occasional after-hours or weekend work for maintenance or incidents (scheduled and rotated)

Job Type & Location
This is a Permanent position based out of Grand Junction, CO.
Pay and Benefits
The pay range for this position is $120000.00 - $150000.00/yr.
For an overview of our employee benefits, please visit: Alpine Bank Careers Page
Workplace Type
This is a fully onsite position in Grand Junction,CO.
Application Deadline
This position is anticipated to close on May 18, 2026.
>About TEKsystems:
We're partners in transformation. We help clients activate ideas and solutions to take advantage of a new world of opportunity. We are a team of 80,000 strong, working with over 6,000 clients, including 80% of the Fortune 500, across North America, Europe and Asia. As an industry leader in Full-Stack Technology Services, Talent Services, and real-world application, we work with progressive leaders to drive change. That's the power of true partnership. TEKsystems is an Allegis Group company.

The company is an equal opportunity employer and will consider all applications without regards to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.

About TEKsystems and TEKsystems Global Services

We're a leading provider of business and technology services. We accelerate business transformation for our customers. Our expertise in strategy, design, execution and operations unlocks business value through a range of solutions. We're a team of 80,000 strong, working with over 6,000 customers, including 80% of the Fortune 500 across North America, Europe and Asia, who partner with us for our scale, full-stack capabilities and speed. We're strategic thinkers, hands-on collaborators, helping customers capitalize on change and master the momentum of technology. We're building tomorrow by delivering business outcomes and making positive impacts in our global communities. TEKsystems and TEKsystems Global Services are Allegis Group companies. Learn more at TEKsystems.com.

The company is an equal opportunity employer and will consider all applications without regard to race, sex, age, color, religion, national origin, veteran status, disability, sexual orientation, gender identity, genetic information or any characteristic protected by law.