SUPPORT & SYSTEMS ENGINEER (L2L3)

Zella Technologies, LLC; Göktürk; On-site; TRY 60,000 - 100,000; Full time

Job summary

We are a Managed Services Provider delivering IT support, networking, VoIP, cloud, and fiber services. We seek a Support & Systems Engineer to own Level 2–3 tickets, lead migrations, manage SLAs, and drive documentation and operations improvements. The role spans Windows, Linux, networking, VoIP, security, automation, cloud, and identity systems.

This hands-on, leadership-oriented position includes planning cloud migrations and contributing to on-call coverage as needed.

Qualifications

• Hands-on support for Windows, Linux, and macOS systems.
• Manage Active Directory environments including GPOs, OUs, and hybrid setups.
• Troubleshoot complex networking: firewalls, VLANs, VPNs, DNS, DHCP, routing.
• Configure enterprise network devices (MikroTik, Juniper, others).
• Resolve VoIP issues (SIP, PBX, Asterisk, FreePBX, 3CX, Kazoo, QoS).
• Perform packet capture and traffic analysis (Wireshark, tcpdump).
• Support identity platforms (Azure Entra ID, Okta, Entra ID) and Intune.
• Maintain virtualized environments (Hyper-V, VMware, Proxmox, StarWind, TrueNAS).
• Backup, DR solutions (Veeam) and security hardening, MFA, compliance basics.
• Automate tasks with PowerShell, Python, or Bash.

Responsibilities

• Own Level 2 and Level 3 support tickets and improve documentation.
• Lead system and tenant migrations, plan projects with minimal downtime.
• Oversee support operations, manage SLAs and KPIs.
• Plan and execute cloud migrations including identity and AD/Entra ID transitions.
• Coordinate with customers before, during, and after migrations.
• Participate in on-call rotation for nights and weekends as needed.

Skills

Windows

Linux

macOS

Networking

VoIP

Automation

Cloud platforms

Identity systems

PowerShell

Python

Bash

Tools

MikroTik

Juniper

Hyper-V

VMware

StarWind

TrueNAS Scale

Proxmox

Veeam

Azure Active Directory / Entra ID

Intune

Okta

Job description

We are a Managed Services Provider (MSP), VoIP Provider, and Fiber ISP delivering cutting-edge technology solutions to businesses. Our services include managed IT support, network infrastructure, VoIP systems, cloud platforms, and fiber internet solutions.

We are expanding our team and looking for a Support & Systems Engineer who can own Level 2 and Level 3 support tickets, lead system and tenant migrations, manage SLAs and KPIs, improve documentation, and help oversee support operations.

This is a hands-on, leadership-oriented role requiring deep troubleshooting skills across Windows, Linux, networking, VoIP, security, automation, cloud platforms, and identity systems. This role also includes responsibility for planning and executing infrastructure and cloud migration projects. Participation in an on-call rotation for nights and weekends is required as needed.

Key Responsibilities

• Technical Support & Troubleshooting


• Provide advanced troubleshooting for Windows, Linux, and macOS systems


• Manage Active Directory environments including GPOs, OUs, and hybrid AD setups


• Troubleshoot complex networking issues involving firewalls, VLANs, VPNs, BGP, DHCP, DNS, and routing


• Configure and maintain MikroTik , Juniper, and other enterprise network devices


• Diagnose and resolve VoIP issues including SIP, PBX systems, Asterisk, FreePBX , 3CX, Kazoo, and QoS


• Perform packet capture and traffic analysis using Wireshark, tcpdump , and MikroTik Torch


• Support Azure AD (Entra ID), Intune, and identity management platforms including Okta and Zero Trust frameworks


• Maintain and troubleshoot virtualized and hyper-converged environments (Hyper-V, VMware, StarWind , TrueNAS Scale, Proxmox )


• Manage backup and disaster recovery solutions including Veeam


• Implement security hardening, endpoint protection, MFA, and compliance best practices


• Automate repetitive tasks using PowerShell, Python, or Bash

Migrations, Projects & Systems Engineering

• Plan and execute cloud and identity migrations, including:
  
  
  
  • Google Workspace to Microsoft 365 (Entra ID, Exchange Online, OneDrive, SharePoint)
  
  
  • Active Directory to Entra ID (Azure AD) and hybrid identity environments
  
  
  • Define project scope, technical requirements, timelines, risks, and success criteria
  
  
  • Build detailed project plans including milestones, dependencies, rollback strategies, and validation steps
  
  
  • Execute migrations with minimal downtime and clear communication to stakeholders
  
  
  • Coordinate with customers before, during, and after migrations to set expectations and provide updates
  
  
  • Perform post-migration validation, documentation, and optimization
  
  
  
  

Documentation, SOPs & Process Improvement

• Maintain and improve documentation within ITGlue , Hudu, Confluence, and internal Wiki systems


• Create and update Standard Operating Procedures (SOPs), knowledge base articles, and internal training materials


• Meet a weekly documentation quota to ensure systems, processes, and resolutions are consistently documented


• Identify inefficiencies and implement process improvements and automation

SLA, KPIs & Reporting

• Ensure SLA compliance for ticket response and resolution times


• Track KPIs related to support performance, migrations, and service delivery