Website Design · Web Developer · Full-Stack

Freelance Website Design & Web Developer serving Costa Blanca & Alicante — available for Global Remote Projects

Marc Donaldson — 30+ Years Experience in Bespoke Software

Specializing in high-performance Next.js applications, SaaS platforms, and custom CRM systems for real estate, auctions, and service-based businesses. I build scalable, data-driven web products and modernise legacy systems into fast, maintainable architecture.

Costa Blanca & Alicante based — available globally (CET)
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Philosophy

Architecture meets design

CraftingscalableWeb,SaaS,andSoftwaresolutionswithSvelte,Next.js,andReact.

With over three decades in the industry, I bridge the gap between complex technical architecture and intuitive user design. I specialise in building high-performance web applications, SaaS solutions, and modern software products that scale.

30+Years
100+Projects
15+Techs
Core Stack

Languages

PHPJavaC++PythonColdFusionC# .NETTypeScriptJavaScript

Frameworks

ReactNext.jsTailwind CSSSvelte

Infrastructure

MySQLPostgresCloudflareMobile Development
Built for scale with
Next.jsCloudflareTypeScript
Capabilities

Digital Offerings

Strategic technical solutions crafted to solve complex architectural challenges.

01

Real Estate Web Development

02

Custom SaaS & CRM Development

03

Auction Management Systems

04

Legacy Code Modernization

05

CRM Strategy & Implementation

06

Page Speed Optimization

01

Real Estate Web Development

Bespoke property CRMs and custom property portals for local real estate agencies. High-performance tools designed for the modern property market.

Journey

Experience & Background

Three decades of shipping software across multiple technology generations.
2018 - 2025

Full Stack Developer

MPL Enterprises

Developing and maintaining complex full-stack web solutions.

2009 - 2025

I.T. Manager / Web Developer

Lumsden Auctions

Managed IT infrastructure and developed custom web applications for auction management.

2009 - 2011

Senior Web Developer

Coast Digital

Built high-performance websites and digital solutions for a variety of clients.

2014 - 2014

Freelance Developer

Centigrade

Provided specialized development services on a project basis.

Academic
1993 - 1994

BTEC First in Information Technology

East Devon College

1993 - 1994

BTEC in Computer Studies

East Devon College

Network
Full Professional Resume

Let's connect
on LinkedIn

Connect for architecture inquiries, consulting, or full-stack opportunities.

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Selected Works

Featured Portfolio

Architecting high-performance digital solutions with surgical precision.
View All Projects
Ben Cook Real Estate project preview
Real Estate Ecosystem

Ben Cook Real Estate

Svelte / Bespoke Property CRM

Premium property platform with bespoke CRM for the Costa Blanca real estate market.

50% faster lead processing & higher organic search visibility
Case Study
SvelteBespoke Property CRM
Lumsden Auctions project preview
Auction Management System

Lumsden Auctions

PHP / Bespoke Admin

Full-scale auction management system with live bidding and automated cataloging.

40% increase in auction turnover through automation
Case Study
PHPBespoke Admin
Worldle project preview
Game

Worldle

NextJS / React

Popular geography-based guessing game inspired by Wordle.

2M+ daily active users at peak
Case Study
NextJSReact
Studio T Casa project preview
Beauty Salon

Studio T Casa

Svelte / Modern UI

A beauty salon located within a stunning finca in Dolores, Alicante.

99/100 Lighthouse score & 30% more online bookings
Case Study
SvelteModern UI
Teuteuf project preview
WordPress Design / Development

Teuteuf

WordPress / PHP

Bespoke WordPress design and ecosystem development.

Perfect Core Web Vitals on an image-heavy portfolio
Case Study
WordPressPHP
Statele project preview
Game

Statele

NextJS / React

Interactive US state-based geography guessing game.

500k+ monthly active users & high retention
Case Study
NextJSReact

Bespoke Performance Engineering

Every project is optimized for sub-second load times and 100/100 Lighthouse scores.

Start Your Project
Client Results
Firstly all I can say is Marc delivered on what he promised. He built my Property website and CRM from scratch. This was all done in the time it would usually take a team to do. I would fully Recommend Marc if there were stars to click it would be 5 stars for sure. *****
B
Ben CookDirector · Ben Cook Real Estate
Developer Labs

Exploring the Next Frontier of Web Apps

Discover a collection of high-performance products, interactive experiments, and strategy games built for the modern edge.

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Let's build together

Currently accepting new projects for remote full-stack development and architecture.
Phone / WhatsApp+34 627 191 675
LocationCosta Blanca, Spain · Remote worldwide
Available — Responds in 24h
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