IT Architect Infrastructure & Cloud

Hi, I'm Jurjen.

I design and run the platform
everything else is built on.

From on-premises data centres to Azure hybrid cloud — I architect the networks, clouds and workplaces that thousands of people rely on every day, and I stay close enough to the keyboard to keep them running.

Portrait of Jurjen den Toom

Selected case / Accell Group

From data centre to hybrid cloud, built for the group.

Accell is a group of some 20 cycling companies across Europe. I help shape and deliver the infrastructure underneath them: Azure hybrid cloud, Kubernetes, networking, workplace and security — from strategy to deployment.

20+companies served group-wide
15+ yrsat Accell, support to architect
EU-widemigrations & rollouts led
HybridAzure + on-prem, one platform

What I do

Where infrastructure meets production.

Architect for change

Solution designs that fit the strategy and survive contact with reality — cloud, network, workplace.

Automate the platform

Azure DevOps pipelines and infrastructure as code, so the safe path is the repeatable path.

Secure by design

Identity, endpoint and network security worked into the design together with the security team.

Stay hands-on

Third-line engineering when it matters. I don't just draw the plan — I help ship and run it.

Away from the keyboard

Motorcycling, squash and padel, snowboarding, and fixing or building anything with a plug on it.

Career / 15+ years in IT

From support desk to group architect.

  1. 2024 — now

    Accell Group

    IT Architect Infrastructure & Cloud

    Co-own the technology strategy and its implementation: cloud transformation, data centre, networking and security architecture for the group.

  2. 2012 — 2024

    Accell IT B.V.

    Infrastructure Engineer III (Senior)

    Third-line engineering and Azure DevOps work: AKS and hybrid cloud, Office 365 migrations across Europe, SCCM, Intune, Okta and security rollouts (Rapid7, SentinelOne).

  3. 2009 — 2012

    Accell IT B.V.

    Support Engineer

    First- and second-line support, CMDB and workplace support on site across Europe and the US. Where I learned to translate what people need into what IT delivers.

  4. 2008

    Hanzehogeschool Groningen

    BSc Business Information Technology (HBO Bedrijfskundige Informatica)

    Also built the Business Intelligence course module as a graduate — data warehouse templates with Oracle Warehouse Builder.

Certifications & training: Microsoft MD-100 · Azure Infrastructure Solutions · Windows Server 2012 (install & admin) · ITIL Foundation v3 · Lean Six Sigma Yellow Belt

Projects / 2024 — 2026

Transformation programmes & platforms I've worked on.

Architecture, governance and hands-on design work across cloud platforms, identity, integration and security — enterprise scale, business continuity intact.

2024 — now

Azure Landing Zone & Cloud Platform

Cloud Platform Architect

Designed and governed the Azure platform standards that let enterprise workloads onboard securely and at scale — balancing security, operations and developer experience.

  • Landing zone architecture & security/governance design
  • Subscription and management group strategy
  • Networking, connectivity and private endpoint strategy
  • Identity integration
  • Monitoring, backup & recovery architecture
  • Cloud onboarding patterns
  • Azure Landing Zones
  • Virtual WAN
  • Azure Firewall
  • ExpressRoute
  • Private Link
  • Terraform
2024 — 2026

Enterprise Transformation Programmes

Infrastructure Architect / Technical Lead

Technical architecture and governance across enterprise-wide modernization of infrastructure, workplace, cloud, networking and security — design reviews, risk assessment and vendor coordination.

  • Technical architecture and governance
  • Solution reviews and design validation
  • Technical risk assessment
  • Vendor coordination and design oversight
  • Platform modernization planning
  • Technical decision making during projects
  • Cloud transformation
  • AD consolidation
  • M365 consolidation
  • Network modernization
2025 — now

API Management & Integration Modernisation

Cloud & Integration Architect

Led the architecture for API platforms and enterprise integration, using Azure API Management and cloud-native services to simplify connectivity and modernize legacy landscapes — including IBM i / AS400.

  • API architecture design & governance
  • Integration platform strategy
  • Hybrid connectivity patterns
  • Security and authentication design
  • Technical evaluation of integration technologies
  • Azure API Management
  • Logic Apps
  • Event-driven
  • REST APIs
  • Hybrid connectivity
2025 — now

Platform Engineering & Kubernetes

Platform Architect

Defined scalable platform patterns so application teams can deploy modern workloads securely and consistently — hosting strategy, CI/CD and infrastructure automation.

  • Platform and Kubernetes platform design
  • Application hosting strategy
  • Developer & CI/CD enablement
  • Infrastructure automation
  • Operational standards
  • AKS
  • Containers
  • Terraform
  • Azure DevOps
  • GitOps
2025 — now

Identity Transformation

IAM Transformation Lead

Technical leadership for enterprise identity modernization — consolidating authentication platforms and moving toward a cloud-first identity strategy with less complexity and risk.

  • Identity architecture reviews
  • Migration planning
  • Application inventory validation
  • Dependency analysis
  • Authentication modernization
  • Identity governance review
  • Entra ID
  • Okta
  • SAML
  • OIDC
  • SCIM
  • MFA
2024 — now

Microsoft 365 & AD Consolidation

Infrastructure Migration Architect

Governed the technical side of directory and productivity-platform consolidations across multiple countries, domains and business units — coexistence design, cutover planning, risk.

  • Active Directory & Microsoft 365 consolidation
  • Migration planning
  • Dependency validation
  • Coexistence design
  • Risk assessment & cutover planning
  • Active Directory
  • Exchange Online
  • SharePoint Online
  • Quest
  • ShareGate
2025 — now

Microsoft Fabric & Data Platform

Platform Architect & Technical Advisor

Helped evaluate architecture, capacity, governance and migration approaches for adopting Microsoft Fabric across the enterprise analytics landscape.

  • Platform evaluation & capacity planning
  • Architecture reviews
  • Migration assessments
  • Governance considerations
  • Cost and operational reviews
  • Microsoft Fabric
  • Power BI
  • Synapse
  • OneLake
2024 — now

Infrastructure Security & Governance

Technical Review Authority

Design reviews, hardening and change validation for infrastructure and identity security — more secure environments without disrupting operations.

  • Security design & hardening reviews
  • Risk assessment & dependency analysis
  • Change validation
  • Operational impact assessment
  • Identity security
  • AD security
  • Cloud security
  • Platform security
2026

Business Continuity & Discovery

Infrastructure Lead

Mapped critical applications, infrastructure dependencies and business data locations to support continuity planning and informed decision making.

  • Server inventory analysis
  • Application mapping
  • Dependency discovery
  • Data location identification
  • Infrastructure assessment
  • App mapping
  • Dependency discovery
  • Inventory analysis

Working stack

Tools are a means. The platform is the work.

Build & run

  • Azure
  • Azure Kubernetes Service
  • Azure App Services
  • Azure DevOps
  • Windows Server & Desktop
  • VMware
  • Linux

Manage & secure

  • Microsoft Intune
  • Okta SSO
  • Netskope
  • Active Directory
  • SCCM / SCOM
  • Rapid7
  • SentinelOne

Connect

  • LAN / WAN / Wi-Fi
  • Riverbed
  • Hybrid cloud
  • Backup & storage

Contact

Building, changing or scaling a platform?

Happy to talk infrastructure, cloud transformation or anything with a motor and a plug.