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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Systems Administrator (HYBRID) - **Company:** ALTRES - **Location:** Honolulu, HI, United States (Remote available) - **Experience:** Expert - **Salary:** $95,000.0 - $130,000.0 - **Contract:** Permanent contract - **Skills:** Microsoft Windows, Active Directory, Application Firewall, Bash Shell, Ubuntu (Operating System), Software Documentation, Dynamic Host Configuration Protocol, Disaster Recovery, Domain Name System (DNS), Virtual Private Networks (VPN), Network Security, Linux Servers, Windows Servers, Networking Basics, Routing, Windows PowerShell, Red Hat Enterprise Linux, Remote Access Technology, TCP/IP, Virtual Local Area Networks, Virtualization Technology, VMware VSphere, Backup and Restore, Data Logging, System Availability, Firewalls (Computer Science), Docker - **Published:** August 6, 2026 - **Apply:** http://www.realjobshawaii.com/applications/new?job_id=54176 ## About the Role * 5+ years of experience in a System Administrator or infrastructure-focused role. * Strong hands-on experience with VMware vSphere. * Strong experience administering Windows Server environments. * Solid experience administering Linux servers. * Experience supporting Docker-based workloads in production environments. * Experience managing enterprise-grade firewalls, VPNs, and WAFs. * Strong understanding of networking fundamentals (TCP/IP, routing, DNS, VLANs). * Experience monitoring and troubleshooting complex systems. ## Description We are seeking an experienced Senior Systems Administrator to manage, maintain, and operate our IT infrastructure. This role is responsible for the reliability, performance, and day-to-day operation of on-premises and virtualized environments, including VMware vSphere, Windows and Linux servers, Docker environments, advanced firewalls, VPNs, and Web Application Firewalls (WAFs). The ideal candidate is hands-on, operationally strong, and comfortable supporting business-critical systems. After probation and at discretion of manager, this position has potential to move to a hybrid work from home 2 days a week., Infrastructure & Systems Management * Administer and maintain VMware vSphere infrastructure, including host management, VM provisioning, performance tuning, and capacity planning. * Install, configure, manage, and support Windows Server environments (Active Directory, DNS, DHCP, Group Policy, file and print services). * Administer and support Linux servers (e.g., RHEL, Ubuntu, or equivalent). * Administer and support Docker environments on Linux servers, including host configuration, upgrades, and troubleshooting. * Perform system patching, upgrades, maintenance, and lifecycle management. * Monitor system health, availability, and performance; troubleshoot and resolve infrastructure issues. * Plan and execute infrastructure upgrades and improvements. Network & Platform Operations * Configure, manage, and maintain advanced firewalls (e.g., next-generation firewalls), including rule sets, NAT, routing, and logging. * Administer VPN solutions (site-to-site and remote access). * Manage and maintain Web Application Firewalls (WAFs) to support application availability and protection. * Maintain reliable and secure network connectivity across environments. Backup, Recovery & Reliability * Implement and maintain backup and disaster recovery solutions. * Perform backup validation, restore testing, and disaster recovery exercises. * Ensure system availability, redundancy, and recoverability. Automation, Documentation & Support * Develop and maintain automation using PowerShell, Bash, or similar scripting tools. * Create and maintain system documentation, diagrams, and operational runbooks. * Provide Tier 2 / Tier 3 support for infrastructure-related incidents and service requests. * Participate in on-call rotations and scheduled after-hours maintenance. ## Related Videos - [Embracing the Hybrid Cloud: Unlocking Success with Open Source Technologies](https://www.wearedevelopers.com/videos/883-embracing-the-hybrid-cloud-unlocking-success-with-open-source-technologies) - [Docker Compose: Rediscovered](https://www.wearedevelopers.com/videos/1978-docker-compose-rediscovered) - [An Applied Introduction to eBPF with Go](https://www.wearedevelopers.com/videos/1075-an-applied-introduction-to-ebpf-with-go) - [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch) - [Embracing the Hybrid Cloud: Unlocking Success with Ansible](https://www.wearedevelopers.com/videos/932-embracing-the-hybrid-cloud-unlocking-success-with-ansible) - [Turning Container security up to 11 with Capabilities](https://www.wearedevelopers.com/videos/718-turning-container-security-up-to-11-with-capabilities) ## Related Articles - [How We Built a Worry-Free System That Runs for 10+ Years – And What We’d Do Again](https://www.wearedevelopers.com/magazine/751-how-we-built-a-worry-free-system-that-runs-for-10-years-and-what-we-d-do-again) - [What Are The Top Skills Required For Azure Developers?](https://www.wearedevelopers.com/magazine/77-what-are-the-top-skills-required-for-azure-developers) - [Highest Paying Tech Companies for Developers](https://www.wearedevelopers.com/magazine/220-highest-paying-tech-companies-for-developers) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [Best Paying Jobs in Technology](https://www.wearedevelopers.com/magazine/256-best-paying-jobs-in-technology)