Available for new projects

Enterprise .NET
Cloud Software Consultant

Building scalable, secure backend systems and cloud-native solutions. 8+ years delivering results for businesses that demand reliability.

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8+
Years exp.
30+
Projects
Core tech stack
C# / .NET 5 and newer Entity Framework Microsoft Azure Azure Functions Azure SQL Azure App Service Azure DevOps CI/CD REST gRPC Microservices
About me

Code that holds up. Architecture that scales.

Jaap van Rooijen

I'm a dedicated consultant specialising in enterprise .NET development and Microsoft cloud solutions. Over 8+ years I've delivered projects ranging from APIs to full cloud migrations, always with a clear focus on long-term maintainability.

My approach is pragmatic: I combine my technical knowledge with a understanding of what makes software valuable for a business. Clean architecture, proper testing, solid CI/CD.

Based in the Netherlands, working with clients across industries including Logistics, Automotive, Audio & Video conference, SaaS and PaaS.

🎯

Backend & Architecture

Designing systems that grow gracefully. Clean architecture, and API-first thinking.

☁️

Cloud-Native on Azure

From App Services and Functions to Static Web Apps with end-to-end Azure expertise cost-consciousness built in.

🔐

Security by Default

Security embedded from day one. Compliance, threat modelling, and hardened deployments.

⚡

Automation & CI/CD

Reliable, repeatable deployments. Infrastructure as code, automated testing.

Technical skills

Expertise Breakdown

Deep specialist knowledge, built over years of real-world delivery.

Background

Professional Background

A track record of delivering complex technical projects, on time and without surprises.

2026 — present

.NET Consultant: Independent

Designing and implementing enterprise-grade backend solutions for clients across multiple industries. Specialised in cloud-native Azure architectures, API platform development, and introducing CI/CD practices in teams transitioning from legacy workflows.

2024 — 2026

Cloud Software Engineer

Designing and implementing enterprise-grade backend solutions for clients across multiple industries. Specialised in cloud-native Azure architectures, API platform development, and introducing CI/CD practices in teams transitioning from legacy workflows.

2023 — 2024

Cloud Backend Engineer

Working at a scale-up in software development for circular economy solutions.

2021 — 2023

Team Lead Software Engineering

Team lead connected vehicles within a team of 7 developers, Cloud and Embedded.

2021 — 2023

Subject Matter Expert Smart charging

Additonal role of working on integration between smart charging systems and backend platforms.

2019 — 2021

Embedded Software Engineer

Design and implement of IoT telemetry applications for connected vehicles, based on CAN-bus data and conversion to telemetry data.

2016 — 2018

Technical Specialist Hybrid & Electric

Diagnostics mechanic for hybrid and electric vehicles.

2010 — 2016

Technical Specialist Automotive

Started out as a car mechanic and progressed to a technical specialist role in the automotive industry.

Get in touch

Let's build something solid together.

Open to new consulting engagements. Whether you're starting from scratch or need to fix what's broken. I'd love to hear about your project.

  • Clear scope, timeline & pricing upfront
  • Async-first, no unnecessary meetings
  • Typically responds within one business day
LinkedIn Jaap van Rooijen
GitHub JVR TechSolutions