IT PROFESSIONAL · APPLICATION MANAGEMENT
# Hi, I'm Dennis. I'm an IT professional focused on application management, technical support, and reliable IT services. Throughout my career, I've gained experience working with IT service management platforms, user support, and enterprise IT environments. I enjoy solving technical problems, improving how systems work, and continuously expanding my knowledge.About me
I’m an IT professional currently working as a Technical Application Manager, building on my experience in IT support and service management.
I’m interested in understanding how applications, infrastructure, and IT services fit together. I value structured troubleshooting, reliable service delivery, and continuously improving the way IT services are supported.
Outside my professional role, I enjoy learning about technology and expanding my understanding of IT systems.
Experience
Technical Application Manager
Responsible for maintaining TOPdesk, keeping the application up to date, and ensuring critical functionality continues to work through major upgrades.
- Maintaining TOPdesk and managing application updates.
- Supporting major upgrades and verifying that imports continue to work correctly.
- Troubleshooting application issues and supporting reliable service delivery.
- Additional experience working with Jira and Confluence.
IT Support & Service Desk
Experience supporting users, business applications, and enterprise IT environments.
- Incident handling and structured troubleshooting.
- Working with IT service management processes and platforms.
- User and account administration, including Active Directory and Azure AD.
- Supporting workplace IT and endpoint management with SCCM.
Skills & Technologies
My skills combine professional experience in application management and IT service management with practical technical knowledge developed through my homelab.
Application Management
Maintaining TOPdesk, managing application updates, supporting major upgrades, and verifying that imports continue to work correctly. Additional experience with Jira and Confluence.
IT Service Management & Support
Experience with incident handling, structured troubleshooting, user support, IT service management processes, and enterprise workplace technologies.
Virtualization & Linux
Running virtualized infrastructure and administering Linux servers to host and maintain applications and services.
Containers & Self-Hosting
Deploying and maintaining self-hosted applications using containers, managing application configurations, and troubleshooting services.
Networking & Security
Designing segmented home networks, configuring firewall policies, and managing secure access to internal services.
Web Services & Monitoring
Configuring reverse proxies, DNS, HTTPS/TLS, and monitoring to support the availability and accessibility of hosted services.
Scripting & Troubleshooting
Investigating configuration issues, troubleshooting services, and using shell scripting to assist with administration tasks.
Beyond work
I’m curious about technology and enjoy continuously expanding my technical knowledge. I also share technical articles and notes on my personal blog.