Jonas Marien

Currently active in Payroll

Freelance Full-Stack Software Engineer

Creating scalable back-end solutions with .NET and seamless front-end experiences using React and Angular. Transforming complex challenges into intuitive digital solutions.

Recent projects

2024

KION Group - Warehouse visualization

An advanced tool for real-time warehouse visualization, stackportal monitors vehicle movements and locations with precision. It delivers a clear, interactive map of your facility, showing stock locations and tracking activities seamlessly. Whether a forklift is moving between points or tasks are being executed, stackportal ensures you have instant insights into warehouse operations.

Role

Full-Stack Software Engineer

Technologies

.NET, Angular, NATS

Visit Site

KION Group

2023

Protime - Workforce Management

myProtime is a software suite for workforce management that provides tools for time registration, leave management, and scheduling. It features an interface designed for usability and supports mobile accessibility. The suite helps manage administrative tasks efficiently and accommodates flexible work environments.

Role

Full-Stack Software Engineer

Technologies

.NET, React

Visit Site

Protime

About

I’m Jonas - an experienced Freelance Full Stack Software Developer from Antwerp

Hey there! I’m Jonas, a freelance software engineer and IT consultant based in Antwerp. With over 5 years of experience, I specialize in creating intuitive and impactful digital solutions that solve complex problems. My expertise includes C#, .NET, TypeScript, Angular, and more — helping turn ideas into seamless user experiences.

From developing warehouse visualization tools to building financial planning systems, I thrive on delivering solutions that exceed expectations. Whether it’s designing responsive applications, optimizing performance, or integrating with modern APIs, I focus on your goals to ensure the end result aligns with your vision.

Inspired by innovation and driven by precision, I’m ready to collaborate and bring your next project to life!

Work Experience

Full Stack Software Engineer at KION Group

Full Stack Software Engineer at KION Group

Full Stack Software Engineer at KION Group

.NET C#

Angular

2024

IT Consultant at Info Support

IT Consultant at Info Support

IT Consultant at Info Support

2020 - 2024

Distributed Systems Analyst at KION Group

Distributed Systems Analyst at KION Group

Distributed Systems Analyst at KION Group

Azure Cloud

Dapr

Orleans

2023

Trainer at .NET and Design Patterns at CERM

Trainer at .NET and Design Patterns at CERM

Trainer at .NET and Design Patterns at CERM

.NET C#

Design Patterns

2023

Full Stack Software Engineer at Protime

Full Stack Software Engineer at Protime

Full Stack Software Engineer at Protime

TDD

React

.NET C#

2022

Full Stack Software Engineer at Vanbreda Risk & Benefits

Full Stack Software Engineer at Vanbreda Risk & Benefits

Full Stack Software Engineer at Vanbreda Risk & Benefits

Azure Cloud

React

.NET C#

2020 - 2022

Skills

Here, I showcase the technologies I work with and the programming languages I master. From C# to JavaScript, each skill contributes to the mosaic of my professional expertise.

.NET

C#

SQL

TypeScript

Angular

React

Azure DevOps

CI/CD

Test-Driven Development

SCRUM

Kanban

Design Patterns

Azure Cloud Services