Overnight Linux Consultant Jobs (NOW HIRING)

Level 3 Field Engineer

Senior On-Site & Remote Infrastructure Engineer

Full-Time New York / New Jersey area Field Services

About the Role

We need a senior field engineer who can walk into unfamiliar environments, diagnose complex issues, and own them through to resolution. As a senior (L3) escalation point, you handle our toughest issues and engage vendors when a problem needs to go further. This is a high-trust role for someone who thrives on variety and complexity, not routine. Most importantly you must work well with a team that helps each other and works closely together.

Responsibilities

Technical Escalation & Support

Serve as a senior escalation point for issues unresolved by L1/L2 technicians - both remote and on-site.

Troubleshoot and resolve advanced problems across servers, networks, endpoints, and liaise with software applications.

Engage vendors when necessary; own the issue through to resolution regardless of path.

Collaborate with the wider team. Reaching out, asking, and answering to get issues solved quickly.

Field & Infrastructure Work

Lead and participate in networking deployments, hardware replacements, and production cutovers (in live environments).

Deploy and support networking environments of all shapes and sizes, including non - standardized setups (across multiple vendors of switching, wireless, routing, and firewalls).

Walk into unfamiliar client sites with minimal context and assess, prioritize, and resolve technical issues.

Handle emergency deployments, infrastructure cutovers, and site relocations.

Network & Systems Work

Assess client network environments during site walkthroughs. Identify switch consolidation opportunities, recommend equipment placement, (VLAN improvements,) and propose practical upgrades with confidence.

Administer Windows Server environments, virtualization platforms, and cloud infrastructure.

Availability & Coverage

Be available to provide weekend, holiday, and after-hours coverage for urgent incidents and escalations.

This role involves occasional travel for emergency and on-site work, with trips typically lasting 1-5 days. Overnight travel averages 10-15% and may be required on short notice.

Mentorship & Documentation

Mentor L1/L2 technicians; provide guidance on escalated issues and best practices.

Maintain thorough, standardized documentation of solutions, client environments, (and processes).

Required Qualifications

Experience

7+ years in IT support, including at least 3 years in a Level 3 or senior engineer role.

Prior MSP or multi-client environment experience strongly preferred.

Hands-on experience with server/workstation hardware, cabling, and on-site troubleshooting.

Technical Skills

Strong Windows Server administration experience (exposure to Mac & Linux a plus). Virtualization: Hyper-V (vSphere).

Microsoft 365, Azure, and Intune (for endpoint and identity management).

Networking: Firewalls, VPNs, VLANs, DNS/DHCP, and best practices. Core networking fluency matters more than any single vendor platform - you should be able to log into a SonicWall, Fortinet, Meraki, or comparable device and understand it.

Comfortable with PowerShell for routine administration.

Other Requirements

Comfortable working independently in unfamiliar environments without step-by-step guidance.

Available for last-minute travel, weekends, late nights, holidays, and overtime.

Based in the New York / New Jersey area (Connecticut considered) with reliable vehicle and a valid driver's license.

Real-world experience setting up, managing, and troubleshooting firewalls, servers, and general networking.

Experience with emergency site support, relocations, or infrastructure cutovers.

A genuine team player who works well with others.

Preferred Qualifications

What Success Looks Like

Can be dispatched on-site with confidence that the work gets done right.

"Figure-it-out-ability" - given an unfamiliar problem, you work it through independently or by asking, retain what you learn, and pass it on to others.

Moves at a good pace without sacrificing quality or documentation.

Resourceful when documentation is sparse or systems are unfamiliar.

Calm and level-headed under pressure.

Communicates clearly with clients and teammates.

Dependable for after-hours and emergency coverage without handholding.

L1/L2 techs grow from working alongside you.

Not the Right Fit If You...

Prefer a predictable 9-5 schedule.

Need extensive documentation before starting work.

Are uncomfortable working independently on unfamiliar systems.

Are unavailable for emergencies, after-hours, or weekend coverage.

Prefer remote support over hands-on field work.