T3 System Engineer (General Microsoft + Linux)

Company Overview

REST Solution offers a full range of outsourced IT support and cybersecurity services at a fair price. We are committed to help companies scale and grow by streamlining IT operations, minimizing downtime and improving productivity. In the process, we also help companies save costs and plan for their IT expenses. We proudly offer exceptional customer service that goes beyond mere delivery of IT support.

Our engineers go the extra mile to enable you to reach your business goals with ease

Job Summary

As a T3 System Engineer (General Microsoft + Linux) , you will be responsible for designing, implementing, and maintaining complex on-premises and hybrid infrastructures built on Microsoft and Linux platforms. Your deep expertise across Windows Server, Active Directory, mainstream Linux distributions, virtualization, storage, networking, and automationcombined with advanced troubleshooting and strong problem-solvingwill ensure the scalability, reliability, and security of our customers environments.

Duties and Responsibilities

• Design, deploy, and manage highly available, scalable, and secure Microsoft and Linux server infrastructures based on business requirements.
• Architect, harden, and maintain Windows Server (2016 / 2019 / 2022), Active Directory (including Group Policy, DNS / DHCP), RHEL / AlmaLinux / Ubuntu servers, and associated services.
• Implement and support virtualization platforms (e.g., VMware vSphere / ESXi, Microsoft Hyper-V), including clustering, vMotion / Live Migration, and resource optimization.
• Administer identity and directory services across hybrid scenarios (AD, LDAP, SSSD), and integrate with cloud identity (e.g., Azure AD / Entra ID) when required.
• Build and maintain automation and IaC via PowerShell, Bash, Ansible, and desired-state configurations to deliver consistent, repeatable deployments.
• Perform advanced troubleshooting and root cause analysis across OS, directory, networking, storage, and performance layers; lead incident response on P1 / P2 issues.
• Implement and operate monitoring, logging, and alerting to proactively detect and resolve issues.
• Plan, test, and execute patching and lifecycle management for Microsoft and Linux estates with minimal downtime.
• Configure and maintain enterprise backup / restore and DR, including routine DR exercises and documentation.
• Collaborate with cross-functional teams to integrate on-prem systems with cloud services (e.g., Azure, M365) and third-party platforms, ensuring secure interoperability.
• Conduct regular security assessments (CIS benchmarks, vulnerability remediation, least-privilege), and maintain compliance with applicable frameworks.
• Create and maintain runbooks, HLD / LLD documentation, and contribute to knowledge sharing; mentor junior engineers and T1 / T2 teams.
• Identify opportunities for cost, resilience, and performance optimization and recommend improvements aligned to best practices.

Information Security

Requirements

Key Competencies

Working Condition