Ambitious ideas,
built and shipped.
I'm Simon van der Weele, a senior engineer who led teams and shipped production systems for 15+ brands. Now I partner directly with founders to design, build, and launch their products. No agency overhead, no junior-freelancer risk.
You're not betting on potential. You're hiring someone who has already shipped, repeatedly, under real load, for teams serving millions.
Real products, shipped and running.
A selection of what I've designed, built, and launched, for my own clients and inside product teams at scale. Every one is live.
15+ betting brands, re-platformed.
I moved critical systems serving 15+ brands from legacy .NET onto modern .NET Core microservices, with the dashboards and load-testing to run them 24/7 through peak events.
Real-time slot games in Pixi.js, built, fixed, and deployed to live players.
The record.
Five years, four companies, Junior to Lead. The same arc every time: learn the system fast, ship under pressure, then lead the people doing it.
Founder & Full Stack Developer
Nov 2025 - PresentFounded development consultancy delivering cost-effective, AI-assisted full-stack solutions to clients using AWS infrastructure and modern development practices.
Studio Game Lead
November 2024 - November 2025Led game client development, managed framework updates, and oversaw deployment pipelines across multiple game titles. Developed and maintained game clients, investigated production bugs, and supported deployment operations.
Full Stack Team Lead
March 2024 - November 2024Managed cross-functional team, led agile ceremonies, and coordinated deliverables using Docker & Kubernetes.
Backend Engineer | Core
January 2023 - March 2024Upgraded critical systems from .NET Framework to .NET Core, implemented microservices architecture, built observability dashboards, and managed releases of monolithic API serving 15+ brands.
Software Engineer | Global Initiatives
July 2022 - January 2023Led OIDC authentication integration and assisted in updating team documentation around brand creation.
Full Stack Team Lead
October 2021 - July 2022Led development team, coordinated deliverables with Product Owner, and established deployment strategies on AWS.
Full Stack Developer
April 2021 - October 2021Built Angular applications and Node.js APIs using Serverless Framework, deployed on AWS infrastructure.
Full Stack Developer
June 2020 - December 2020Migrated live casino site to Next.js, built back office system, and integrated third-party APIs on GCP.
A full stack, end to end.
One person who can take a product from cloud infrastructure to the pixels a user taps, and lead a team through it when there is one.
Product, end to end
Web and mobile apps designed, built, and shipped to real users, from the first sketch to the App Store.
React · Next.js · React Native · TypeScript
Infrastructure that scales
Cloud setup, pipelines, and monitoring so your product stays fast and stays up as it grows, the same systems I ran for 15+ brands.
AWS · GCP · Docker · Kubernetes
AI-accelerated delivery
Modern tooling and AI woven into how I work, so you get more shipped for less, without cutting corners on quality.
Claude · Copilot · modern workflows
A senior lead when you need one
When the work needs a team, I've built and led them. When it needs one very capable pair of hands, that's me.
Team leadership · Agile · Scrum
Trusted by the people who led me.
“Throughout one's career, it is essential to appreciate the working relationships with colleagues. My experience working with Simon is one I deeply cherish. Simon is exceptionally intelligent, down-to-earth, humble, and an absolute professional.”
Simon started working with us as a Full Stack Developer and immediately proved himself to be an exceptional colleague. He has proven himself to be highly meticulous, dedicated and enthusiastic — very well organised, punctual…
Throughout my time with Casasoft, it was an absolute pleasure working with Simon. From the get-go, it was immediately evident that Simon possesses in-depth technical knowledge on some of the industry's leading technology stacks.
You'll work with me. Not a sales team, not a rotating cast of juniors.
I'm a senior engineer with a decade around production software. After five years leading teams and running production systems (live casinos, betting platforms serving millions), I learned that the hard part of software isn't the code. It's making the right calls fast, explaining them in plain language, and shipping something reliable without a bloated team.
So that's how I work: directly, with modern tooling and AI to move quickly, treating your budget and timeline like my own. When you need a team, I've led them. When you need one very capable pair of hands, that's me. And when a build needs a whole studio, I run one.
Let's bring your product into focus.
A 30-minute call, no pressure. Tell me what you're building, and I'll tell you honestly whether I can help you ship it, and how.