Jairo Roosenburg - Software Developer

Writing clean, purposeful code, one project at a time.

I build practical software with C# and .NET, from backend logic to shipped products like TimeFlow, while deepening my skills in architecture and cloud technologies.

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                        1
                        
                            public class
                            TimeEntry
                        
                        2
                        {
                    
                        3
                          
                            public
                            int Id {
                            get; set; }
                    
4   public
                            Project Project { get; set; }
5   public
                            TimeSpan Duration { get; set; }
6}
58ba3f5  refactor: implemented global database path

About

Precision over shortcuts

I'm a software developer from the Netherlands with a background in software development education. I enjoy solving problems, learning new technologies, and building software that is reliable, scalable and maintainable, the details are the part I care about most.

Location Netherlands
Background Software Development (HBO)
Focus Software development
Availability Open to opportunities

Skills

What I work with

Backend

C#
.NET
PHP
LINQ
REST APIs

Frontend

HTML
CSS
Bootstrap
JavaScript

Database

SQLite
MySQL

Tools

Visual Studio
Git
GitHub

Featured project

Projects

TimeFlow

A desktop time-tracking application built with C#, .NET and SQLite. It allows users to manage projects, log time entries and generate productivity reports.

C# .NET SQLite Entity Framework

GitHub

Portfolio Website

HTML/CSS website. The project you're looking at.

Coming soon

Future Project

Next case study — in progress.

Activity

Reps & commits

118+

Commits this year

2 active repositories

timeflow refactor: extract reporting logic into service 2d ago

timeflow feat: add CSV export for time entries 4d ago

portfolio chore: restructure section layout 6d ago

timeflow fix: correct duration rounding in reports 1w ago

timeflow test: add unit tests for Project model 1w ago

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Problems solved

Easy · 3 Medium · 1 Hard · 0

View GitHub Profile

Get in touch

Interested in working together?
Let's connect.

Open to opportunities in C# / .NET development.

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