Web & software development

Websites & software

I’m Adderlyn Windsor. I build websites, web apps and API integrations for businesses, independent professionals and private clients in German-speaking countries and internationally.

A 20-minute introduction

Portrait of Adderlyn Windsor

Services

What I build for you.

A clear website for your customers or a tool for your team. The starting point is what you need to make your day easier.

Business websites

Help customers understand what you offer and make the next step easy, on a phone or at a desk.

For example: a salon site with services, prices and a booking link.

Explore this service

Custom web applications

A tool for processes that have become too awkward to manage with spreadsheets, email and off-the-shelf software.

For example: a shared workspace where your team manages incoming enquiries.

Explore this service

Integrations & automation

Connect the systems you already use and simplify repetitive tasks where it makes sense for your business.

For example: connecting appointment requests to an existing booking tool.

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Portfolio

Selected projects

A look at the websites and web applications I’ve built, and the tasks they help people get done.

Screenshot of the earlier Luxus Lodge archive with the front of the house on the homepage

Accommodation website · Redesign

Neumanns Luxus Lodge

I redesigned the archive for this property in Cologne-Junkersdorf in the style of the original website. The image shows the earlier archive.

Sakura Ramen desktop website showing the hero, ordering steps, illustrated menu and sample location

Restaurant website · Menu

Sakura Ramen

A restaurant site with an illustrated menu, ordering information and a language switcher. The screenshot shows the desktop layout.

FuryDazzler website with a dark hero, learning tracks, video section and frequently asked questions

English-language landing page

FuryDazzler

I built an English-language landing page for FuryDazzler. It introduces the programme and makes the video and FAQs easy to find.

FreeRoute VPN app showing its profile list and a simulated connection status

macOS app · OpenVPN

FreeRoute VPN

A SwiftUI interface for user-supplied OpenVPN profiles via Tunnelblick. The connection shown in the demo is simulated.

Pokédex with the catalogue, search field and Bulbasaur details open

Web application · API integration

Pokédex

Search by name or number and explore detail views powered by PokéAPI. A small local catalogue remains available if the API is down.

Herovera demo showing a character, tasks and progress

Web application · Gamification

Herovera

A web app where everyday activities help a character progress. It’s in development; the image shows a demo with sample data.

A closer look at the design

Three different ways to combine colour, typography and imagery.

Personal brand

Boutique Noir

Graphite and bronze, understated serif type and a natural portrait.

Hospitality

Luxury Villas Budva

Warm natural tones, clear headings and room for the architecture to stand out.

Restaurant design

Sakura Ramen

Bold red, clean type and a bowl of ramen as the focal point.

Costs & scope

What affects the price

A compact one-page site takes different work from a multilingual website with online booking. Before we start, you’ll get a proposal that separates the build from any ongoing costs.

Book an intro call

One-off project costs

  • Number of pages and languages
  • Custom design and preparation of existing content
  • Additional features such as booking or integrations

Ongoing costs

  • Domain and hosting
  • Fees for any third-party services your project needs
  • Maintenance and future updates, if agreed

An idea of what you want to achieve is enough to get started. If you have an existing site, content or examples you like, we can look at them during the call.

How we work

From the first call to handover.

  1. Introduction

    We spend 20 minutes discussing what you need and whether I can help.

  2. Scope & proposal

    You receive a concrete proposal with the scope, costs and next steps.

  3. Design & development

    I share a draft early and use your feedback to refine the result.

  4. Launch & handover

    Once you approve the work, it goes live. I share the agreed access details and show you how to get started.

About me

Hi, I’m Adderlyn.

Adderlyn Windsor by the water in a white shirt and dark waistcoat

I’ve been exploring software development for around 16 years. I began pursuing it professionally in 2018, first through training in front-end and full-stack development, then through professional work with Angular and SAP data integrations. I build my own web apps with Angular, Java and Spring Boot.

As part of a development team, I helped modernise a web interface used by healthcare professionals in their day-to-day work at Austrian hospitals.

  • Angular
  • Java & Spring Boot
  • Integrations

Before we start

Common questions

What should I bring to the intro call?

Tell me what the site or app needs to do for you. A link to your current site, a few examples or early content can help, but none of these is required.

Can I keep my existing website?

Yes. We can look at whether targeted improvements are enough or a rebuild makes more sense. I take your existing content, domain and access into account when planning.

How long does development take?

We agree on a timeframe after the intro call. It depends on the features you need and when content and feedback are ready.

Can I update my own prices and content later?

If you need to make frequent changes, I can plan for a suitable editing tool. Alternatively, we can agree on which updates I handle for you.

Contact

What would you like to build?

Tell me a little about your idea. In the intro call, we can discuss what makes sense and how to get started.

Book an introductory call

Choose an available time for your introductory call.

20 minutes · Vienna time

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