Open to opportunities

Cleo Muller

@cleomuller

Message

I am a full-stack software developer specializing in C#, .NET, and cloud-native web applications.

Netherlands

Message

What I'm looking for

I seek a collaborative, agile team role where I can drive cloud-native .NET projects, continue migrating and modernizing systems, and grow technically while delivering client-focused solutions.

I am a full-stack software developer experienced across front-end and back-end development, delivering web and middleware SaaS solutions used by municipalities, hotels, and pharmacies. I collaborate closely with clients and cross-functional teams throughout the development lifecycle.

I have led migrations and rewrites, including upgrading web applications and APIs from .NET Framework/ .NET 6 to .NET 8, and I regularly apply CI/CD practices with Azure DevOps, Git, and unit testing to maintain high-quality, production-ready software.

I hold an AWS Cloud Practitioner certification and thrive in agile environments where continuous learning, practical problem-solving, and client-focused feature delivery drive impact. I am motivated to contribute to cloud-first, scalable .NET projects and help teams ship reliable products.

Experience

Work history, roles, and key accomplishments

Current

Software Developer

Current

IReckonU

Oct 2024 - Present (10 months)

Rewrote and migrated web APIs from .NET 6 to .NET 8 for authentication and authorization, documented new features, and contributed to middleware SaaS used by hotels globally.

C#.NET 8+Entity Framework MSSQL Azure DevOps Azure Unit Testing

Software Developer

Inlichtingenbureau

Apr 2020 - Oct 2024 (4 years 6 months)

Led migration of a municipal web application from .NET Framework 4.8 to .NET 8 and delivered ongoing maintenance and new feature requests used by municipalities across the Netherlands.

C#ASP.NET .NET Core MVC Entity Framework MSSQL Azure DevOps JavaScript

Software Developer Consultant

SummitDevelopers

Jan 2020 - Jun 2020 (5 months)

Delivered client features using C#/.NET and MSSQL, collaborating with stakeholders to meet product requirements during a short-term consultancy engagement.

C#.NET ASP.NET MSSQL Azure DevOps

Software Developer Consultant

Type Dev

Feb 2019 - Dec 2019 (10 months)

Developed backend systems and collaborated with front-end developers and business analysts to deliver a website serving over 150 pharmacies for repeat-drug dispensing.

C#.NET ASP.NET Aurelia JavaScript TypeScript MySQL Jenkins

Software Developer

Avroy Shlain Cosmetics

Jul 2017 - Dec 2018 (1 year 5 months)

Developed and enhanced two client-facing applications to enable order placement, sales reporting, and team sales tracking for internal and external users.

C#ASP.NET MVC Bootstrap JavaScript ADO.NET MSSQL

Software Developer

WAM Technology

Aug 2015 - Jun 2017 (1 year 10 months)

Maintained and improved one desktop and one web application used by clinics nationwide to track TB patients and medication, resolving bugs and improving performance.

C#.NET ASP.NET VB.NET WPF MVC Entity Framework MSSQL

Analyst Programmer

Nedbank

Jan 2013 - Jul 2015 (2 years 6 months)

Analyzed systems, produced impact and feasibility documentation, designed improvements, and coded and tested enhancements to support reliable delivery of requested features.

C#.NET MSSQL MVC ADO.NET Visual Studio