Senior Systems Engineer - Linux/Windows Infra Lead

Data Analysis Inc.; Los Angeles (CA); On-site; USD 115,000 - 130,000; Full time

Job summary

Data Analysis Inc is seeking an experienced Systems Engineer III to lead installations, maintenance, troubleshooting, and enhancement of our on‑premises and cloud infrastructure. You will oversee Linux and Windows environments, storage, hardware, networking, and databases, spending ~40% on ops and ~60% on projects.

The role emphasizes hands‑on leadership, reliability, security, and scalability while supporting growth. Occasional on‑call, weekend work, and collaboration across teams are required.

Qualifications

• Experience with cloud platforms, preferably AWS and Azure.
• Data center experience, including rack and stack, cabling, hardware replacement, and troubleshooting.
• Strong experience administering Linux and Windows Server environments.
• Proficiency with the Linux command line, Bash scripting, system services, package management, networking, permissions, logging, and troubleshooting.
• Strong experience with Microsoft domain services, including DNS, Active Directory, Group Policy, and WSUS.
• Experience with load balancers.
• Experience with Fibre Channel SAN and NAS technologies.
• Proficiency with GitLab.
• Experience with SFTP technologies and processes.
• Automation experience using tools such as PowerShell, Bash, Ansible, Terraform, Jenkins.
• Strong networking knowledge, including OSI model, TCP/IP, VLANs, LAN/WAN concepts.
• Knowledge of virtualization platforms such as VMware or Hyper-V.

Responsibilities

• Lead multiple infrastructure projects from planning through implementation.
• Install, maintain, troubleshoot, secure, and upgrade on-premises and cloud data center infrastructure.
• Administer and support Linux and Windows server environments, storage systems, applications, hardware, and related infrastructure technologies.
• Manage Linux systems, including OS configuration, patching, packaging, services, permissions, logging, performance monitoring, and security hardening.
• Verify, implement, and govern enterprise best practices for availability, performance, security, and reliability across Linux and Windows environments.
• Lead and support security audit initiatives, including HITRUST, SOC 2, and related compliance efforts.
• Participate in an on-call rotation.
• Work one weekend day per month, with corresponding time off.
• Train, mentor, and support junior engineers.
• Lead technical troubleshooting across infrastructure, network, storage, Linux, Windows, and applications.
• Facilitate interdepartmental meetings and collaborate with stakeholders.
• Research, evaluate, and perform PoC testing for new technologies.
• Establish and maintain relationships with end users, vendors, managers, and internal teams.
• Support change management processes and ensure production changes are planned and documented.

Skills

AWS

Azure

Linux administration

Windows Server administration

Linux command line

Bash scripting

PowerShell

Ansible

Terraform

Jenkins

Docker

Kubernetes

VMware

Hyper-V

Active Directory

DNS

Group Policy

WSUS

Networking fundamentals

OSI model

TCP/IP

VLANs

LAN/WAN concepts

SAN/NAS

GitLab

SFTP

Security auditing/compliance

On-call / weekend rotation

Tools

GitLab

Ansible

Terraform

Jenkins

Docker

Kubernetes

VMware

Hyper-V

SFTP

PowerShell

Bash

Azure DevOps

Fibre Channel

NAS/SAN

Job description

Data Analysis Inc is seeking an experienced Systems Engineer III to lead installations, maintenance, troubleshooting, and enhancement of our on‑premises and cloud infrastructure. You will oversee Linux and Windows environments, storage, hardware, networking, and databases, spending ~40% on ops and ~60% on projects.

The role emphasizes hands‑on leadership, reliability, security, and scalability while supporting growth. Occasional on‑call, weekend work, and collaboration across teams are required.