Lee - Senior Infrastructure Engineer

Profile

I am a Microsoft Certified Professional with 25+ years commercial experience providing support for mission critical Wintel environments, for a number of large corporations. My advanced problem solving skills and detailed knowledge of complex Microsoft based enterprise systems has allowed me to provide efficient and effective support in high-pressure environments, with high workloads and tight deadlines. I am a dedicated team member with excellent communication skills, but also possess the self-motivation and management ability to enable me to perform to the same high standards when working alone.

Professional Profile

Cloud & Identity Architecture

Microsoft 365 (Exchange Online, SharePoint Online, Teams, Hybrid Mail Flow)
Azure Management (AD-Connect, Conditional Access, RBAC, Exchange Online)
Federated Authentication (ADFS, Azure AD, SSO with PHA/PHS)
Microsoft Intune Device Management (Mobile and Desktop)

Database & Application Platforms

Microsoft SQL Server with Always-On Availability Groups
Microsoft Exchange Server with Database Availability Groups
Microsoft Dynamics and Dynamics 365
High Availability Clustering Solutions

Advanced Automation & Security Development

PowerShell Automation Frameworks (Security Monitoring, Compliance Reporting)
Custom Security Incident Response Tools and Forensic Data Collection
Automated Policy Monitoring (Conditional Access, User Access Compliance)
Interactive Performance Dashboards and Real-time Data Visualization

Enterprise Infrastructure & Security

Windows Server Infrastructure with Active Directory
Certificate Services (PKI, SSL Management, Protocol Hardening)
Advanced Security Hardening and Proxy Technologies
PowerShell Scripting and Infrastructure Automation

Virtualization & Modern Workplace

VMware Infrastructure (ESX, SRM, vROps)
Citrix Virtual Desktop Infrastructure (XenDesktop, XenServer, AppSense, FSLogix)
Microsoft Teams Meeting Room Technologies
Web Technologies (IIS, Apache, Tomcat, PHP, ASP)

Specialized Technical Expertise

Advanced System Diagnostics (Crash Analysis, Kernel Dump Analysis)
Mobile Device Management (AIrwatch, Intune)
Network Security (Proxy Servers, Reverse Proxies, Meraki Wireless)
Security Auditing and Password Analysis Tools
Cloud Storage Automation
Enterprise Password Management

Professional Experience

Severn Trent Water, Coventry, West Midlands

Senior Infrastructure Engineer

September 2006 - Present

Key Achievements:

Led comprehensive digital transformation initiatives, migrating legacy infrastructure to modern cloud-hybrid architectures
Architected and deployed enterprise-scale Microsoft 365 and Azure environments supporting thousands of users
Implemented zero-trust security frameworks and advanced identity management solutions

Cloud & Hybrid Infrastructure Leadership

Design and implement modern Windows Server environments with cloud-native integration and containerization readiness
Architect comprehensive Microsoft 365 ecosystems including Exchange Online, SharePoint Online, Teams, and advanced compliance solutions
Deploy Zero Trust Architecture with Azure AD Premium features including Conditional Access policies and risk-based authentication
Lead Office 365 migrations with complex hybrid mail flow architectures, ensuring seamless user experience and business continuity

Enterprise System Modernization

Modernize SQL Server infrastructures with Always-On Availability Groups and cloud backup strategies for enhanced resilience
Transform legacy Dynamics implementations to Dynamics 365 cloud solutions with advanced analytics integration
Deploy and manage Microsoft Teams infrastructure including modern meeting room technologies and collaboration platforms

Security & Identity Management

Architect enterprise identity solutions using Azure AD, ADFS, and federated authentication with modern protocols
Implement comprehensive Single Sign-On (SSO) strategies across cloud and on-premises applications
Design and deploy PKI infrastructures with automated certificate lifecycle management and modern encryption standards
Execute comprehensive Active Directory modernization including schema optimization and RBAC implementation

Custom Security & Monitoring Solutions

Develop in-house password reset utilities and monitoring dashboards with comprehensive user activity tracking
Conduct advanced analysis of Primary Refresh Tokens and Azure authentication mechanisms for enhanced security posture
Create automated email notification systems for critical infrastructure changes including Entra user activity and Group Policy modifications
Build custom identity monitoring solutions (Identity Guard) with real-time alerting for OU changes and computer account tracking

Cross-Platform Integration & Monitoring

Develop SSH and remote operations dashboards with cross-platform PowerShell integration for unified infrastructure management
Create custom domain controller health monitoring systems with comprehensive status reporting and alerting
Build SMTP monitoring and MX record validation tools with response time analysis and graphical health status overviews
Design bespoke PowerShell automation solutions tailored to specific operational requirements and business needs

Advanced Security Automation

Develop sophisticated PowerShell automation frameworks for security monitoring and compliance reporting across enterprise infrastructure
Create custom security incident response tools and automated forensic data collection systems for rapid threat analysis
Design automated monitoring solutions for Conditional Access policy changes and user access compliance auditing
Build interactive performance dashboards with real-time data visualization for DNS monitoring and capacity planning

Infrastructure Automation & Optimization

Develop PowerShell automation solutions for multi-server remote management and enterprise-scale data collection across Windows infrastructure
Implement advanced monitoring and analytics using Azure Operations Management Suite and DevSecOps practices
Design high-availability cloud-native solutions using Microsoft Clustering, load balancing, and disaster recovery automation

Advanced Technical Leadership

Perform sophisticated system diagnostics including kernel-level debugging and advanced crash dump analysis
Lead virtualization modernization initiatives across VMware and Hyper-V platforms with cloud migration pathways
Architect mobile device management solutions using Microsoft Intune and modern endpoint protection strategies

National Express, Birmingham

Senior Infrastructure Specialist

July 2004 - September 2006

Key Achievements:

Pioneered enterprise virtualization by designing and implementing scalable Citrix infrastructure supporting 800+ remote users
Architected high-availability database clusters using cutting-edge Microsoft Clustering technology, achieving 99.9% uptime
Led web platform modernization initiatives including load-balanced server farms and security hardening implementations

Strategic Responsibilities:

Designed cloud-ready infrastructure foundations supporting 1,500 users across multi-site enterprise environments
Implemented advanced email collaboration systems with Exchange, establishing enterprise communication standards
Developed security-first network architectures using ISA proxy technologies and advanced content filtering solutions
Created resilient database infrastructures with SQL Server clustering for mission-critical business applications

National Grid, Coventry, West Midlands

Senior Systems Engineer

January 2003 - July 2004

Key Achievements:

Developed and deployed standardized remote administration platforms, establishing enterprise-wide operational consistency
Architected scalable multi-domain Active Directory infrastructure supporting complex organizational requirements

Technical Leadership:

Delivered enterprise-level support for 1,800 users across 20 UK locations, implementing standardized service delivery models
Designed and maintained high-availability critical systems infrastructure ensuring business continuity
Established advanced troubleshooting methodologies and knowledge management systems for operational excellence

Professional Certifications

Microsoft Certified Professional (MCP) - Managing and Maintaining a Microsoft Windows Server 2003 Environment (70-290)

Microsoft Certified Professional (MCP) - Planning and Maintaining a Microsoft Windows Server 2003 Network Infrastructure (70-293)

Microsoft Certified Professional (MCP) - Planning, Implementing, and Maintaining a Microsoft Windows Server 2003 Active Directory Infrastructure (70-294)

Education

2003: BSc Information Technology (2:1), Worcester University

2002: HND Computing (Distinction), NEW College

2000: GNVQ Information Technology (Distinction), Solihull College

1998: 9 GCSEs (Including English & Mathematics)