Rizwan Khan · Freelance Senior System Engineer · Hamburg & DACH

Freelance Senior System Engineer for Microsoft enterprise infrastructures.

MECM/SCCM · Active Directory · Windows 11 · PowerShell · Migration & Recovery

19+ years of enterprise experience in stable Microsoft infrastructures: from MECM/SCCM and Active Directory through PowerShell automation to controlled migration, recovery and operational handover.

Operational Proof · Microsoft EnterpriseExperience at a glance
19+ yearsEnterprise experience
35 projectsTechnically documented
German · EnglishBusiness fluent · Hamburg & DACH

Technical breadth from 35 documented projects

More than MECM: infrastructure, platforms, operations and automation.

Microsoft Enterprise

  • Active Directory
  • Group Policy
  • MECM/SCCM
  • Intune
  • Exchange
  • Windows Server

Endpoint & Workplace

  • Windows 11
  • OSD
  • Software distribution
  • Packaging
  • Patch management

Servers, Apps & Databases

  • SQL Server
  • IIS
  • Apache
  • Tomcat
  • JBoss
  • PostgreSQL
  • MySQL

Virtualisation & Operations

  • VMware vSphere
  • Hyper-V
  • Citrix
  • Monitoring
  • Backup
  • ITSM

AI Automation & Software Delivery

  • Next.js
  • React
  • TypeScript
  • APIs
  • Automation workflows
  • AI tooling
  • Testing
  • Deployment

Breadth of references

Companies and institutions I have worked with.

37 organisations. One continuous project journey since 2007.
RK TECH LTDAI Automation · Software Development · IT Engineeringwww.rktechs.io

Client engagements were carried out independently as a contractor. Partner and project environments are labelled accordingly.

Technical depth. An entrepreneurial view.

Complex IT landscapes become manageable when architecture, operations and people work together.

Illustration of resilient enterprise infrastructure with redundantly connected systems

For more than 19 years I have designed, migrated and stabilised complex enterprise infrastructures.

My focus is on Microsoft platforms, Active Directory, MECM, hybrid operating models and automating recurring work with PowerShell.

In demanding engagements I combine architecture, hands-on implementation and coordination between business units, vendors and IT operations.

Through RK TECH LTD I also bring together AI automation and software development with entrepreneurial responsibility and technical leadership.

Location
Hamburg, Germany
Languages
German · English · Urdu / Hindi
Focus
Enterprise infrastructure

Scope of responsibility and verified contributions.

Selected evidence from enterprise engagements and entrepreneurial leadership.

01
2025

BGW engagement

Current engagement as MECM/SCCM Expert for Windows 11 deployment, software distribution and patch management.

02
54,000

Endpoints analysed

Recovery concept and rebuild of a compromised Active Directory environment after a ransomware attack.

03
Global

MECM architecture

Implemented MECM architecture, zero-touch images, drivers, software packages and content distribution for international sites.

04
Enterprise

IT integration

Developed integration paths for the Microsoft infrastructures of several Volkswagen subsidiaries covering AD, GPO, Intune and MECM.

05
RK TECH LTD

AI & software

Responsible for AI automation and the technical delivery of web and app products.

Six selected case studies from 35 documented projects.

The selection offers a quick way into current and particularly telling engagements. The full chronology is always one click away.

All client engagements were carried out independently as a contractor; some engagements ran in parallel. The entrepreneurial role is marked separately.

6in focus
35fully documented
Browse all 35 projects
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6 of 6 projects

Drag, swipe or use the arrows to navigate. All content is also reachable by keyboard.

Abstract endpoint modernisation with software packages, distribution rings and Windows 11 devices
BGW

Endpoint Management

MECM/SCCM Expert

I support Windows 11 deployment, software distribution, patch management and troubleshooting within the MECM processes.

MECM / SCCMWindows 11PowerShellSoftware Distribution
Case study
Abstract network of resilient, redundantly connected system nodes
Dataport AöR

Virtualisation & Operations

Senior System Engineer

I supported business-critical specialist applications and took migrations through test, change and go-live into data-centre operations.

Windows ServerCitrixPowerShellSQL
Case study
Abstract depiction of converging corporate environments
Volkswagen

Active Directory & Migration

Microsoft Solution Architect

I analysed heterogeneous Microsoft environments and developed integration paths for Active Directory, GPO, Intune and MECM.

Active DirectoryGroup PolicyIntuneMECM
Case study
Abstract global deployment rings with distributed endpoints
BRITA GmbH

Endpoint Management

MECM Consultant

I designed and implemented MECM building blocks for images, drivers, software and cross-site content distribution.

MECMPowerShellWindows 10Content Distribution
Case study
Abstract restored network topology with a protected core
Eurofins

Security & Recovery

Senior System Architect

After a ransomware attack I developed a recovery concept and a controlled migration path to a newly built AD structure.

Active DirectoryPowerShellDNSGroup Policy
Case study
Abstract orchestration of AI automation, web and app product modules
RK TECH LTD

Own company

Founder & Technical Lead

With RK TECH LTD I am responsible for AI automation and the technical delivery of web and app products.

AI AutomationWeb DevelopmentApp DevelopmentFull-Stack Development
Case study

Card 1 of 6

29 more projects in the full chronologyFrom 2007 to today · technically classified and documented for recruiters.

Browse all 35 projects

Broad platform knowledge. A clear enterprise focus.

Experience levels instead of subjective percentages — precise, traceable and recruiter-friendly.

01

Core competency

Microsoft Enterprise

  • Active Directory
  • Group Policy
  • MECM / SCCM
  • Intune
  • Windows Server
  • Exchange
  • IIS
02

Core competency

Platforms & Virtualisation

  • VMware vSphere
  • Hyper-V
  • Citrix
  • RHEL
  • Ubuntu
03

Core competency

Automation & Operations

  • PowerShell
  • Batch
  • Python
  • ITSM / Remedy
  • Monitoring
  • Backup
  • Disaster Recovery
04

Practical experience

AI-accelerated Full-Stack Engineering

  • Next.js
  • React
  • TypeScript
  • API Integration
  • AI Workflow Automation
  • Mobile Apps
  • MVP Development
  • QA & Release
05

Practical experience

Data & Middleware

  • SQL Server
  • PostgreSQL
  • MySQL
  • Apache
  • Tomcat
  • JBoss
06

Working knowledge

Cloud

  • Microsoft Azure
  • AWS
  • Google Cloud
07

Core competency

Leadership & Delivery

  • Solution Architecture
  • Technical Project Management
  • Stakeholder Management
  • Team Leadership
  • ITIL

A solid foundation and continuous development.

Certifications

PeopleCert

ITIL 4 Foundation

Microsoft

MCSA / MCTS — Windows Server 2012 & 2016, Exchange 2016, SQL Server 2016, SharePoint and SCCM

Microsoft

MCITP, MCTS and MCSA — Enterprise Administration & Configuration Manager

Microsoft

MCSE / MCSA — Windows Server 2000 & 2003

Linux Professional Institute

LPIC-1 / LPIC-2

Education & languages

University College London

Bachelor of Computer Sciences (Software Engineering)

GermanBusiness fluent
EnglishBusiness fluent
Urdu / HindiNative

06 · Contact

Let's talk about robust systems.

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