Senior IT Systems & Network Engineer — Secure, Scalable Infra

Lyte; Sunnyvale (CA); On-site; USD 150,000 - 230,000; Full time

Benefits offered by this job

Competitive salary and equity

Medical, dental, and vision coverage

401(k) retirement plan

Flexible vacation and time-off policy

Collaborative, fast-paced environment

Cutting-edge technologies and cross‑功能

Job summary

Lyte is seeking a senior IT/Infrastructure professional to own and secure its growing enterprise IT environment in Sunnyvale. You will manage Microsoft 365, Entra ID, Intune, Linux servers, networking, VPNs, and endpoints across macOS, Windows, and Linux.

The role emphasizes hands-on ownership, cross-team collaboration, and security-first operations. You will lead cloud, identity, and device management initiatives, drive automation, and work across security, compliance, and IT leadership to

Qualifications

• Ownership of Microsoft 365, Entra ID, and Intune environments, including identity lifecycle management, MFA, CA, RBAC, Exchange/SharePoint/Teams.
• Hands-on admin and troubleshooting of Linux systems, hardening, patching, access controls, monitoring, and availability.
• Experience configuring and supporting enterprise networking, firewalls, segmentation, VPNs, and remote access.
• Ownership of mixed macOS/Windows/Linux endpoints using Jamf, EDR, encryption, and vulnerability-management tools.
• Evidence of delivering infra or security projects from problem to handoff.
• Working automation experience with Bash, PowerShell, Python, or similar.

Responsibilities

• Complete knowledge transfer of Lyte’s IT systems and establish relationships with Engineering and partners within 30 days.
• Take ownership of systems within 90 days and deliver a milestone on a priority initiative (e.g., MDM rollout, identity improvements, new office setups).
• Strengthen identity and endpoint security across core tools within six months.
• Improve infrastructure reliability, security, and documentation; reduce manual work and cut cloud/SaaS spend.
• Automate workflows using Bash/PowerShell/Python to boost efficiency.
• By year end, make systems more secure, well-documented, and easier to operate.

Skills

Microsoft 365

Entra ID

Intune

Linux administration

Networking & VPN

Endpoint management

Automation scripting

Problem solving

Tools

Jamf

EDR

Encryption tools

Vulnerability management tools

Job description

Lyte is seeking a senior IT/Infrastructure professional to own and secure its growing enterprise IT environment in Sunnyvale. You will manage Microsoft 365, Entra ID, Intune, Linux servers, networking, VPNs, and endpoints across macOS, Windows, and Linux.

The role emphasizes hands-on ownership, cross-team collaboration, and security-first operations. You will lead cloud, identity, and device management initiatives, drive automation, and work across security, compliance, and IT leadership to