Joan Guarner
@joanguarner
I build maintainable backend services, REST APIs, automation workflows, and production business applications.
BelgiumWhat I'm looking for
I've built C#/.NET Core backend services and REST APIs at Kantar for data processing, workflow automation, and internal applications.
I developed Azure Functions with HTTP and timer triggers, worked with Azure Blob Storage and Azure SQL, and modernized legacy applications to improve maintainability, multi-country support, and user experience. I collaborate directly with operations teams to clarify requirements and validate data mappings before implementation.
At Iberital, I delivered internal web and desktop applications, including Finance and HR automation tools and a production-line application for tasks, materials, stock validation, timings, issues, and EAN codes.
I've also built NEXO ERP, a Java desktop ERP for customers, invoices, and inventory, and a bilingual portfolio platform using Python, Flask, React, TypeScript, Tailwind CSS, and SQLite.
Experience
Work history, roles, and key accomplishments
Software Engineer
Kantar
Sep 2024 - May 2026 (1 year 8 months)
Developed C#/.NET Core backend services and REST APIs for data processing, workflow automation, and internal applications. Built Azure Functions with timer and HTTP triggers and worked with Azure Blob Storage, Azure SQL, and JSON processing.
.NET Developer
Iberital
Apr 2022 - Aug 2024 (2 years 4 months)
Developed internal web and desktop applications using C#, ASP.NET WebForms, SQL Server, WPF, and WinForms. Built Finance and HR automation tools using data validation, APIs, Factorial, and Navision.
Developer Intern
Naturalma
Mar 2018 - Jun 2018 (3 months)
Developed an Android application from scratch using the Android SDK and implemented its SQL database logic. Maintained the company website using WordPress.
Education
Degrees, certifications, and relevant coursework
Universitat Oberta de Catalunya
Bachelor's Degree, Software Engineering
2024 -
Pursuing a Bachelor's Degree in Software Engineering, expected to graduate in 2028.
IES Jaume II El Just
Higher Degree, Cross-Platform Application Development
2018 - 2020
Completed a Higher Degree in Cross-Platform Application Development.
IES La Estación
Intermediate Degree, IT Systems and Networks
2016 - 2018
Completed an Intermediate Degree in IT Systems and Networks.
Tech stack
Software and tools used professionally
Availability
Location
BelgiumAuthorized to work in
Job categories
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