Senior Systems Administrator – Hybrid IT & Security

Hach Company; Loveland (CO); Hybrid; USD 95,000 - 105,000; Full time

Benefits offered by this job

Flexible working hours

Onboarding and training options

Career coaching and development

Health benefits

401(k)

Job summary

Hach Company is seeking a Senior Systems Administrator to design, implement, and operate critical infrastructure services in a hybrid role based in Loveland, CO (Ames, IA option). You will own core platform services including DNS, certificate management, email authentication, Windows/virtualization platforms, and security remediation.

The role requires 6+ years of enterprise infrastructure experience, strong PowerShell skills, and PKI expertise.

Qualifications

• Bachelor’s degree or equivalent practical experience.
• 6+ years of hands-on infrastructure engineering in a regulated or enterprise environment.
• Deep technical experience with Windows Server, Active Directory, DNS/DHCP, Group Policy, and VMware/virtualization.
• Experience with SSL/TLS certificate lifecycle management, PKI workflows, and email authentication standards (DKIM, SPF, DMARC).
• Direct experience with external security vulnerability remediation and PowerShell automation.

Responsibilities

• Administering and maintaining Windows Server, Active Directory, VMware/virtualization, storage, and site/datacenter infrastructure platforms.
• Managing DNS services, domain registrar activities, and DNS-based email authentication controls (DKIM, SPF, DMARC).
• Handling SSL/TLS certificate lifecycle management (CSRs, issuance, renewals, PKI support).
• Investigating and remediating external attack surface findings and high-risk vulnerabilities with SecOps and Global Security.
• Developing PowerShell scripts to automate infrastructure tasks and support backup/disaster recovery.

Skills

Windows Server

Active Directory

DNS/DHCP

Group Policy

VMware/virtualization

PowerShell scripting

SSL/TLS certificate management

PKI workflows

Email authentication (DKIM, SPF, DMARC

Security vulnerability remediation

Education

Bachelor’s degree in Computer Science, Information Systems, Engineering, or equivalent practical experience

Tools

VMware

Job description

Hach Company is seeking a Senior Systems Administrator to design, implement, and operate critical infrastructure services in a hybrid role based in Loveland, CO (Ames, IA option). You will own core platform services including DNS, certificate management, email authentication, Windows/virtualization platforms, and security remediation.

The role requires 6+ years of enterprise infrastructure experience, strong PowerShell skills, and PKI expertise.