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William Slabbaert
William Slabbaert

Tech Lead / Senior Full-Stack .NET Developer

Open to offers · Member since 24 Oct 2026
Message
Location
Bangkok, Thailand
Desired salary
Unspecified
Work preference
Hybrid / Full Time, Contract
Experience level
Lead

About

Professional summary

I am a Belgian full-stack .NET developer and tech lead based in Bangkok, Thailand. I have five years of experience building web, mobile, and enterprise software with C#, ASP.NET Core, React, Angular, and Microsoft Azure.

I currently lead a team of five developers at We Do Dev Work, a Bangkok software company with Belgian roots. I guide technical decisions, review pull requests, align delivery with client requirements, and remain hands-on across .NET, Node.js, SvelteKit, Supabase, and PHP projects.

Previously, I served as a full-stack developer and tech lead on a white-label investment platform used by thousands of financial advisers. I delivered features for stock, ETF, and fund trading, reporting, and portfolio monitoring while leading a team of four developers.

My consulting background includes projects for Belgian pharmacy, laboratory, steel construction, home-services, and education-technology organizations. I enjoy joining client teams, understanding their operational needs, and delivering maintainable solutions that create measurable value.

I care strongly about engineering quality, code reviews, shared QA ownership, and practical standards for AI-assisted development. I have introduced team coding standards through SKILL.md documentation and helped embed quality responsibility throughout the development workflow.

Outside of software, I train and compete in Muay Thai and Brazilian Jiu-Jitsu. I am a native Dutch speaker, work professionally in English, and am learning spoken Thai.

Skills

25 capabilities
AngularASP.NET CoreASP.NET MVCBlazorC#CI CDCode ReviewCQRSHTMLIonicJavaScriptMediatRMobile DevelopmentPHPQuality AssuranceReactREST APIsSCSSSoftware ArchitectureSQLTechnical LeadershipTechnical SEOTypeScriptWinFormsWPF

Tech stack & tools

Working toolkit

Application Hosting

Supabase

Design

Blazor

Development

GitGitHubNetlify

Languages & Frameworks

AngularIonicReact

Experience

Career history

Tech Lead Consultant We Do Dev Work

Lead a team of five developers across client projects and internal products at a Bangkok-based software company with Belgian roots. Own technical decisions, review pull requests, and act as the primary client contact for scope and technical choices.

Created mandatory SKILL.md coding standards to ensure consistency between AI-generated and hand-written code. Introduced shared QA ownership within the development workflow and advised clients on technical choices and SEO. Build products including EngineeringScore, a website-audit tool, and the PAK PRIK online shop.

Full-Stack Developer and Tech Lead Onify

Worked remotely from Bangkok as a consultant for a Malaysian client through Onify. Developed and led work on Capital Platforms, a white-label investment platform used by thousands of financial advisers.

Built features across stock, ETF, and fund trading, report exports, and portfolio monitoring using .NET 6, React, Azure, and SQL Server. Led a team of four developers in collaboration with a project manager and QA engineer while continuing hands-on development.

.NET Consultant Cheops Technology

Worked as a consultant placed by Cheops Technology at Victor Buyck Steel Construction in Eeklo, Belgium. Contributed to the company's internal logistics system for a builder of bridges and heavy steel structures.

Used C# and .NET to support internal business software needs. Left the assignment in August 2024 to relocate to Bangkok, Thailand.

.NET Consultant AllPhi

Consulted for clients in pharmacy, laboratory, and home-services industries, delivering software with C#, .NET, Angular, Xamarin, and related technologies. Worked across web, desktop, and mobile applications.

For APB, built ASP.NET Core MVC and Razor UI components for the Belgian pharmacists' association web application. For Primoris, fixed bugs and delivered features in WPF, WinForms, and Angular laboratory and office software. For Innovation Center Daenens, developed an internal Xamarin.Forms application for domestic workers and wrote the functional specification with the client.

Completed a traineeship focused on .NET Core, CQRS, Entity Framework, Angular, and React. Built an Ionic/Angular medicine-scanning application for Febelco that improved scanning performance by 23–30%.

PHP Developer Intern Signpost

Completed a PHP development internship at an education-technology company in Lokeren, Belgium. Maintained internal PHP software and its HTML, SCSS, and JavaScript frontend.

Supported ongoing internal application development and maintenance while gaining practical experience in web development workflows.

Education

Learning history

HOGENT

Associate degree in Programming (graduaat), Programming

Completed an associate degree in Programming.

VTI Lokeren

High school diploma

Completed high school education.

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