System Administrator II, Onsite - Denver

Job Title: System Administrator II Reports To: Technical Account Manager Full Time, In Office, On Customer Site / Hourly / Includes Benefits, PTO

If you like fixing things, want to get better every day, and take pride in doing the job right even when no one is watching, you'll fit in here. Be Structured Technology Group (BSTG) runs on three things:
Excellence, Integrity, and Growth Mindset. We don't put those words on a poster and move on; we use them to decide who we hire, how we handle mistakes, and what a good day at work looks like.

As a System Administrator II embedded at one of our customer sites in Colorado – Denver/Wheat ridge area, you'll own the day-to-day health of a real business's systems and networks. You'll have the backing of BSTG's Service Desk, Technical Team Lead, and security team behind you, and a clear path forward if you want to grow into more senior technical or leadership work.

BSTG is seeking a System Administrator II to join our growing Service Desk Team, working directly at a customer site in Denver, CO. This is an onsite role where you will work closely with the customer's team to support their IT systems and networks.

You will be responsible for the day-to-day operations and maintenance of IT systems and networks on-site at the customer location: keeping systems running smoothly, driving best practices, upholding security standards, and delivering outstanding service. If you excel in a fast-paced environment and are genuinely curious about technology, this role is built for you.

• Perform routine system upgrades, patches, and security updates to ensure system integrity and reliability.
• Configure and maintain virtualization environments (e.g., VMware, Hyper‑V) to optimize resource utilization and scalability.
• Administer network infrastructure, including routers, switches, firewalls, and VPNs, to ensure secure and reliable connectivity.
• Monitor network performance and troubleshoot network issues, collaborating with other IT teams or service providers as needed.
• Implement and maintain network security measures, such as access controls, firewalls, and intrusion detection/prevention systems.
• Respond to and resolve service desk tickets promptly, escalating complex issues to senior IT staff or vendors as necessary.
• Develop and maintain documentation, knowledge base articles, and FAQs to facilitate self-service and improve support efficiency.
• Implement and manage data backup and recovery solutions to ensure the integrity and availability of critical business data.
• Participate in regular security assessments and audits, identifying vulnerabilities and performing remediations as directed.
• Monitor security logs and alerts, investigating and responding to security incidents promptly.
• Record daily hours accurately and in real time to support billing accuracy and compliance with wage and hour requirements.
• Participate occasionally in after‑hours Priority 1 ticket support as issues arise at the customer site, in accordance with BSTG's on‑call and overtime policies.

• Customer feedback reflects high satisfaction with the quality and responsiveness of your support.
• Your documentation is comprehensive, current, and easy for teammates to use.
  
  You consistently meet or exceed your KPIs.
• You show up in the details:
  Excellence, Integrity, and Growth Mindset are visible in how you work, not just how you talk.
• Your billable hours are tracked accurately and on time, so billing stays current and invoicing is never held up.
• Leads, managers, and project management have full visibility into customer issues because you communicate proactively.

• Bachelor's degree in Computer Science, Information Technology, or a related field, or equivalent hands‑on experience. We care more about what you can do than where you learned it.
• 2+ years of experience in system administration, with demonstrated proficiency managing servers, networks, and security infrastructure.
• Strong knowledge of operating systems (e.g., Windows Server), networking protocols (e.g., TCP/IP, DNS, DHCP), and security principles.
• Hands‑on experience with…