Level 4 Senior Systems Engineer

We are seeking an experienced Level 4 Senior Systems Engineer to provide technical leadership, advanced escalation support, solution architecture, and complex project delivery across Microsoft, cloud, networking, and security environments.

This role is suited to a commercially minded senior engineer who can solve complex technical challenges, lead infrastructure and cloud initiatives, mentor technical teams, and build trusted relationships with clients. You will operate as a senior technical authority while driving improvements across customer environments and service delivery.

Technical Expertise

• 10+ years of experience in the IT industry, including 5+ years within an MSP environment supporting multiple customers
• Advanced Microsoft 365 administration and architecture experience
• Strong hands-on expertise across Microsoft Entra ID, Intune, Azure, Microsoft operating systems, and cloud infrastructure
• Advanced networking and firewall administration capabilities
• Experience with enterprise Wi-Fi, network infrastructure, VPNs, routing, switching, VLANs, WAN, and internet connectivity
• Strong understanding of endpoint security, backup and disaster recovery, and cybersecurity principles
• Experience with PowerShell scripting and automation
• Proven ability to design, troubleshoot, and improve complex infrastructure environments

Security & Cloud

• Experience implementing security controls and remediation strategies
• Understanding of security frameworks and compliance requirements, including Essential Eight, CIS Controls, NIST, and cyber insurance requirements
• Experience with security monitoring, incident response, and security investigations
• Microsoft Sentinel, SIEM, Microsoft Defender, Azure Virtual Desktop, and Cloudflare experience is highly desirable

Platforms & Technologies

• Ubiquiti UniFi and Sophos Firewall experience is advantageous
• Familiarity with Microsoft Teams Phone is beneficial
• Experience with ConnectWise Manage, ConnectWise Automate, IT Glue/IT Boost, and ITIL is desirable

Leadership & Client Engagement

• Proven experience leading technical initiatives and mentoring engineers
• Strong client-facing and stakeholder management capabilities
• Ability to communicate technical concepts and solutions to both technical and non-technical audiences
• Strong analytical and problem-solving skills
• High attention to detail with a proactive, accountable, and outcome-focused approach
• Strong organizational skills and the ability to work independently and make sound technical decisions
• Commitment to continuous learning and professional development

Certifications

Preferred certifications include:

• Microsoft Certified: Enterprise Administrator Expert
• Microsoft Certified: Azure Solutions Architect Expert
• Microsoft Certified: Cybersecurity Architect Expert
• Microsoft Certified: Security Operations Analyst
• CCNA, CCNP, or equivalent networking certification
• CISSP, CISM, CEH, or equivalent cybersecurity certification
• ITIL Foundation or higher

Responsibilities

Technical Leadership & Escalation

• Act as the highest level of technical escalation for Level 1–3 engineers
• Lead root cause analysis for complex infrastructure and cloud issues
• Mentor and guide technical team members
• Develop and maintain technical standards, procedures, and best practices
• Review and approve technical solutions and project designs

Microsoft 365 & Cloud Solutions

• Design, implement, and optimize Microsoft 365 environments
• Lead projects across Microsoft 365, Entra ID, Intune, security, SharePoint, Teams Phone, and Azure
• Implement and improve Zero Trust security frameworks
• Drive automation initiatives using PowerShell and Power Platform

Infrastructure & Networking

• Design and support enterprise-grade networking environments
• Configure and troubleshoot firewalls, routing, switching, VLANs, VPNs, network security, WAN, and internet connectivity
• Lead architecture reviews and network improvement initiatives
• Provide advanced support across Ubiquiti, Sophos, and other network technologies

Security & Compliance

• Conduct security reviews and vulnerability assessments
• Design and implement cybersecurity controls and remediation plans
• Support compliance with relevant security frameworks and cyber insurance requirements
• Assist with incident response and security investigations
• Implement and manage SIEM and security monitoring solutions

Project Delivery & Solution Architecture

• Lead the design and delivery of complex infrastructure and cloud projects
• Participate in solution scoping and pre-sales activities
• Work with management to identify technology opportunities and improvements
• Ensure projects are delivered to scope and a high standard
• Contribute to solution architecture and strategic technology planning

Documentation & Operational Excellence

• Maintain accurate technical documentation, diagrams, as-builts, knowledge articles, and SOPs
• Maintain accurate project updates and service records
• Drive continual service improvement across the business
• Identify opportunities to improve service quality, operational efficiency, security, and technical standards

Client Engagement

• Act as a trusted technical advisor to clients
• Participate in technical strategy meetings and client reviews
• Translate technical solutions and concepts into clear business outcomes
• Maintain a high standard of customer service and professional conduct