Senior Infrastructure Engineer

Job Overview

We are seeking an experienced Senior Infrastructure Engineer for our Platform Team to manage, maintain, and enhance our IT infrastructure across on-premises data center, cloud platforms, endpoints, identity, and security systems. The role requires close collaboration with internal teams to ensure reliable, secure, and scalable IT operations while providing technical leadership and ownership.

Key Responsibilities

Infrastructure & Data Center Management

Design, maintain, and support a small to medium-scale on-premises data center

Manage servers, storage, virtualization, backups, and disaster recovery

Administer virtualization platforms such as Proxmox, VMware, and Citrix

Coordinate hardware lifecycle management, vendor interactions, and infrastructure audits

Microsoft 365, Endpoint & Identity Management

Administer Microsoft 365 services including Exchange Online, SharePoint, OneDrive, and Teams

Manage Microsoft Entra ID (Azure AD), including:

1. User and role-based access control (RBAC)
2. Conditional Access and Multi-Factor Authentication (MFA)

Manage endpoint devices using:

1. Microsoft Intune (Endpoint Manager)
2. Zoho Endpoint Manager

Enforce endpoint security, compliance policies, patching, and application deployment across Windows, macOS, and mobile devices

Cloud & Hybrid Infrastructure

Administer and support cloud environments across:

1. Microsoft Azure
2. Amazon Web Services (AWS)
3. Google Cloud Platform (GCP)

Manage core cloud components including:

1. Compute (VMs / instances)
2. Networking (VPC/VNet, subnets, VPNs, firewalls)
3. Storage and access controls

Support hybrid infrastructure and hybrid identity integrations between on-premises and cloud environments

Assist with cloud cost optimization, security best practices, and operational monitoring

Security & Compliance

Implement and maintain IT security best practices across infrastructure and endpoints

Manage Data Loss Prevention (DLP) policies across M365 and endpoint environments

Configure and manage Sophos Firewall and VPN solutions (remote and site-to-site)

Support ISO 27001 compliance activities including:

1. Control implementation
2. Documentation and audit support
3. Risk assessment coordination

Assist with security incident investigation, remediation, and preventive actions

Systems Administration

Administer and support:

o Linux (Ubuntu / CentOS / RHEL)

o Windows Server and Desktop

o macOS environments

Perform system patching, monitoring, performance tuning, and access management

End-User Support & IT Operations

Provide L2/L3 technical support to end users

Manage IT onboarding and offboarding processes

Maintain IT asset inventory and access governance

Ensure smooth day-to-day IT operations and timely issue resolution

Leadership & Collaboration

Take ownership of assigned infrastructure components and IT services

Guide junior team members and provide technical mentoring

Maintain documentation, SOPs, and architecture diagrams

Communicate effectively with internal stakeholders, vendors, and management

Required Skills & Qualifications

Mandatory

5+ years of experience in IT Infrastructure / Systems Engineering

Strong experience with Microsoft 365, Intune, Zoho Endpoint Manager, Entra ID, and RBAC

Hands-on experience with on-premises data center operations

Working experience with cloud platforms: Azure, AWS, and GCP

Experience with Sophos Firewall and VPN

Working knowledge of Linux, Windows, and macOS administration

Exposure to ISO 27001 or similar information security frameworks

Strong troubleshooting and problem-solving skills

Preferred

Experience with backup and disaster recovery solutions

Scripting knowledge (PowerShell / Bash)

Familiarity with ITIL processes

Experience managing hybrid cloud environments

Soft Skills

Good communication and documentation skills

Strong sense of ownership and accountability

Ability to work independently and collaboratively

Team management and coordination skills