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# IT Help Desk Engineer - Linux Level II ~ III

- **Company:** ACS -
- **Location:** Austin, TX, United States
- **Experience:** Experienced
- **Contract:** Permanent contract
- **Skills:** Secure Shell (SSH), Computer-Aided Design, Microsoft Windows, Apple Mac Systems, Ubuntu (Operating System), Command-Line Interface, Nvidia CUDA, Linux, Linux on Embedded Systems, File System Permissions, IT Management, Python (Programming Language), Lightweight Directory Access Protocols (LDAP), Linux System Administration, Logical Volume Manager, Network Configuration and Change Management, Red Hat Enterprise Linux, Ansible, Software Deployment, VPN Clients, Graphics Processing Unit (GPU), Extensible Firmware Interface, Okta, Git, Information Technology, CIS Benchmarks, U-Boot, Puppet, Network Server, Software Version Control, Docker
- **Published:** September 18, 2026
- **Apply:** https://www.thejobnetwork.com/job/eb9d73dd-fd6c-47a4-b2c0-07458df390ee/it-help-desk-engineer-linux-level-ii-iii

## About the Role

The ideal candidate will be highly organized, customer-focused, and eager to grow with a fast-moving defense startup., * 3+ years of IT help desk, technical support, or related experience.

 * Strong troubleshooting skills across hardware, software, and networking.
 * Build, image, and harden Ubuntu and RHEL-family workstations from a standard baseline, using cloud-init, kickstart, preseed, ansible, or an imaging tool
 * Manage packages and repositories including dpkg/rpm, apt/dnf, third-party repos and GPG keys, and resolve dependency conflicts
 * Administer users, groups, sudoers, file permissions, ACLs, and SSH key lifecycle and hardening
 * Integrate Linux endpoints with central identity (Okta, Entra ID, LDAP) using SSSD/realmd and PAM, and troubleshoot broken authentication

## Description

We are seeking an IT Help Desk Engineer -Linux to provide first-line technical support and ensure the smooth operation of day-to-day IT needs across ACS, including our Windows, macOS, and Linux environments. This role will focus on troubleshooting issues, resolving IT tickets, onboarding new employees, and maintaining systems, while enabling IT leadership to focus on compliance, infrastructure, and long-term security initiatives., * Serve as the first point of contact for IT support, troubleshooting hardware, software, and networking issues across Linux and macOS systems.

 * Administer and support Linux-based workstations and servers, including user and permissions management, software/package installation, and command-line troubleshooting.
 * Manage the onboarding process for new users, including configuring laptops, installing software, and supporting new employee setup.
 * Manage and track IT help desk tickets, escalating when necessary to meet SLAs.
 * Perform routine system maintenance to ensure all devices remain secure and up to date.
 * Assist in documentation efforts, keeping system logs and IT records current, and work with vendors to gather technical and compliance documentation.
 * Support compliance-related initiatives, including CMMC Level 2 and ITAR, by maintaining operational standards, and communicate effectively with employees on the status of their IT issues., * Root-cause failures from journalctl, dmesg, and syslog: boot failures, service crashes, and driver problems
 * Storage work: partitioning, LVM, ext4/xfs, fstab, NFS and SMB mounts, LUKS disk encryption, and recovering a full or damaged disk
 * Hardware and drivers: NVIDIA and CUDA driver installs, kernel modules, UEFI and Secure Boot, and GRUB recovery
 * Network configuration: static addressing with netplan or NetworkManager, VPN clients, host firewall (ufw/firewalld), and certificate trust stores
 * Deploy and verify endpoint security agents on Linux: EDR, patching, disk encryption, and log forwarding, and correct a machine that has drifted out of compliance
 * Write and maintain bash scripts, work in Python for automation, and use git
 * Run and troubleshoot Docker containers, read a Dockerfile or compose file, and resolve permission and GPU passthrough issues
 * Bachelor's degree in Information Technology, Computer Science, or a related field preferred; knowledge of compliance frameworks (CMMC, ITAR, or similar) is a plus.

You'll Stand Out:

 * Experience with owning the Linux endpoint and server baseline end to end: define it, harden it against CIS Benchmarks or DISA STIGs, document it, and keep it patched
 * Experience with managing configuration at fleet scale with Ansible (or Salt, Puppet, Chef), with idempotent playbooks kept in version control and peer reviewed
 * Design Linux access control: centralized authentication, sudo policy, certificate-based or short-lived SSH credentials, and privileged access management
 * Supporting ROS 2 development environments, NVIDIA Jetson or other embedded Linux, or real-time kernel builds
 * Supporting engineering workstations with GPUs, CAD, or simulation workloads
 * Hands-on experience in compliance-driven environments.
 * Background supporting defense or aerospace companies.
 * Familiarity with vendor security and risk management processes.


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