SUPPORT & SYSTEMS ENGINEER (L2L3)

Posted 4 Days Ago
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Merkez, Avcılar, İstanbul, TUR
In-Office
Senior level
Cloud • Information Technology • Professional Services • Cybersecurity
The Role
Provide L2/L3 support and advanced troubleshooting across Windows, Linux, macOS, networking, VoIP, virtualization, cloud identity, and security. Lead migrations and infrastructure projects, maintain documentation and SOPs, manage SLAs/KPIs, automate tasks, and participate in on-call rotation.
Summary Generated by Built In

About Us 

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  


Skills Required

  • Advanced troubleshooting for Windows, Linux, and macOS systems
  • Manage Active Directory environments including GPOs, OUs, and hybrid AD setups
  • Troubleshoot firewalls, VLANs, VPNs, BGP, DHCP, DNS, and routing
  • Configure and maintain MikroTik and Juniper enterprise network devices
  • Diagnose and resolve VoIP issues (SIP, PBX, Asterisk, FreePBX, 3CX, Kazoo) and QoS
  • Perform packet capture and traffic analysis with Wireshark, tcpdump, MikroTik Torch
  • Support Azure AD (Entra ID), Intune, Okta, and Zero Trust identity frameworks
  • Maintain and troubleshoot virtualized/hyper-converged environments (Hyper-V, VMware, StarWind, TrueNAS Scale, Proxmox)
  • Manage backup and disaster recovery solutions including Veeam
  • Implement security hardening, endpoint protection, and MFA
  • Automate tasks using PowerShell, Python, or Bash
  • Plan and execute migrations (Google Workspace to Microsoft 365, AD to Entra ID) with minimal downtime
  • Maintain documentation and SOPs in ITGlue, Hudu, Confluence, or internal wiki; meet documentation quotas
  • Manage SLAs, track KPIs, and coordinate stakeholder communications during projects and migrations
  • Participate in on-call rotation for nights and weekends as needed
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The Company
14 Employees
Year Founded: 2010

What We Do

Zella Technologies is a trusted IT and Telecommunications provider specializing in Managed IT Services, Cloud Solutions, IT Support & Consulting, and Cybersecurity. They offer a wide range of services including phone systems, networks, Wi-Fi, website design, and HIPAA compliance, aiming to be a turn-key solution for businesses.

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