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Available for new projects

Web software people enjoy using.
And enjoy maintaining.

I’m Stefan Lymbourides, a freelance web developer in Switzerland, and under the name LymbIT I build web applications and APIs – from the first sketch to production, using Angular, React/Next.js, NestJS and PostgreSQL, among others.

01 · About

Frontend at heart, full-stack by day.

For about 25 years I’ve been building things for the web – from hand-written HTML through the first single-page apps to today’s monorepos with server rendering and end-to-end encryption in the browser. My focus has always been the frontend: where software meets people.

Over the years, the technology itself has mattered less to me than how efficient it is. I rely on stacks that have proven themselves in daily work, that a team will still understand in two years, and that get to production without detours. I like trying new things – they go into a project when they genuinely make it better.

Day to day I work with Claude Code: for drafts, tests, translations and quickly trying out variants. Architecture, review and responsibility for every line stay with me.

  • ~25years of web development
  • TSfrontend and backend in one language
  • CHfreelancer · sole proprietorship, Switzerland

02 · Services

What I do for you.

For companies looking for an external software developer: as a freelancer or contractor – for a defined project, a smaller task or to strengthen your existing team, remote or on site.

Frontend Engineering

Reactive interfaces with Angular or React/Next.js: clean components, fast load times, designed mobile-first.

Backend & APIs

Node.js services with NestJS: clear REST APIs, authentication, real-time over WebSockets, tests where it matters.

Data & operations

PostgreSQL schemas, migrations, serverless hosting and deployments you don’t have to fear.

UX / UI Design

I don’t just build what the ticket says: on usability and design you’ll always get honest feedback and concrete tips from me – wherever it helps your users.

03 · Stack

What I work with – and what I think of it.

Tap a tile.

04 · Projects

A selection.

Own product · 2026 – ongoing

yuppie-apps.net

Concept, architecture, build

  • Next.js
  • Angular
  • NestJS
  • Prisma
  • PostgreSQL
  • Nx
  • Claude Code

The project: A family of web apps sharing one account – smaller tools and larger apps whose data only leaves the browser encrypted, plus a portal with a wallet and a club site for collaboration.

My part: Everything – from the monorepo through the APIs and key management to the interfaces in four languages.

2025 – 2026

Redesign of a database application

Analysis, architecture, build

  • Angular
  • Tailwind
  • NestJS
  • Prisma
  • SQL Server
  • Claude Code

The project: A client–server application on the Microsoft stack that needed a version 2.

My part: The rebuild through agentic engineering – as a multi-user web application built with Angular and Tailwind.

2014 – 2024

MVPs and client projects

Full-stack development

  • Next.js
  • React
  • Ionic
  • Angular
  • Node.js

MVPs: A blogging platform with social login, a mobile app, an e-commerce platform and a proof-of-concept database application.

Client project (2015): Dynamic microsites with animations and database connectivity that extended a company’s CMS beyond its built-in capabilities.

Client project (2018): A lean single-page app for preparing and structuring address data for a migration to Microsoft Dynamics – built with Angular and Bootstrap.

05 · Contact

A new project? A team that needs reinforcement?

Drop me a short note on what it’s about, which stack is involved and the timeline.
I’ll reply within two working days.

, Switzerland · remote and on site

I only pass client code and data to AI tools with your consent,
and only through accounts whose content is not used for training.

My opinion
How I use it
Where it runs