Harley Lafeber
Medior Software Engineer · .NET, systems integration, cloud & game development
github.com/harleyknd1
Professional profile
Systems/problem-solving software engineer with strong C#/.NET experience and broad hands-on ownership across backend, mobile, cloud, hardware, infrastructure and integrations. Learns unfamiliar technology whenever the problem demands it.
Experience
Sentinel IT BV
Medior Software Developer
Owns complex production work across fintech, smart cards, mobile, APIs, cloud and third-party integrations.
- Sole author of a cross-platform smart-card platform
- Sole technical maintainer and product lead for a Flutter banking app
- Designed PSD2/Open Banking and event-driven registration architectures
Nekrova
Founder · Technical Lead · Preservation
Led the Phoenix volunteer game project, then pivoted the organization toward Dragon’s Prophet preservation and live operations.
- Built and supported a multidisciplinary volunteer team
- Formalized contributor and IP agreements
- Operates and modernizes discontinued MMO infrastructure
Alternate
Junior Developer (C#)
Worked across internal tools, warehouse PDAs and secure logistics systems.
- Built C# WPF TCP messaging software
- Designed BLE warehouse positioning
- Reduced affected picking workflows from ~10–20 to 5–10 minutes
Dutch Game Studio
Game Developer
Sole programmer on Dutch Biker; learned Unity and C# while delivering a playable proof of concept.
- Gameplay, physics, powerups and combos
- API communication and scoreboard backend
- Prototype completed; not commercially released
Pro Unit ICT
Application / Web Developer
Learned PHP and WordPress on the job while working across frontend, backend and web-server setup.
Albeda College
System Administrator
Maintained networks, servers, workstations and cabling — the early systems foundation beneath later software work.
Technologies
Languages C#, C++, TypeScript, JavaScript, Dart, Java, PHP, SQL
Frameworks .NET, ASP.NET, Web API, MVC, WPF, Blazor, Angular, Flutter, Unity, Unreal Engine
Cloud & data Azure, Service Bus, Functions, DevOps, Docker, SQL Server, Redis, MongoDB, Cosmos DB
Systems Linux, Windows Server, nginx, Cloudflare, CI/CD, networking, smart cards, APDU, NFC, EMV, BLE
Education
Avans University of Applied Sciences
Bachelor of Applied Science — Informatica / Software Engineering
Konkuk University, South Korea
Exchange Program — Computer Science & Engineering
Techniek College Rotterdam / Albeda
MBO 4 — Application Development
Albeda College Rotterdam
MBO 3/4 — System & Network Administration
Certifications
- Microsoft AZ-900 — Azure Fundamentals (2023)
- Cisco Small Network certification
- Intel Network Builders University certification
Languages
- Dutch — Native
- English — Full professional / fluent