// Full-Stack Developer & UI Engineer
I build fast, scalable web applications that people love to use. 5 years turning complex problems into clean, maintainable code — from pixel-perfect UIs to robust APIs serving millions of requests.
About me
Hey, I'm Marcus — a full-stack developer based in London. I've spent the last 5 years helping startups and scale-ups go from idea to production. I care about code quality, delivery speed, and the gap between design and implementation.
I specialize in React, Node.js, and PostgreSQL. Outside of work I'm into photography, mechanical keyboards, and the occasional triathlon.
Technical stack
A curated selection of technologies I use to build great products.
Selected work
A selection of projects I'm proud of — from SaaS platforms to open-source tools.
Lightweight query builder and migration tool for Node.js + PostgreSQL. Zero dependencies, TypeScript-native, 1.2K GitHub stars and used at 50+ companies.
Background
My professional journey so far.
Work history
Built the merchant insights feature used by 200K+ business customers. Reduced API response time by 60% through query optimisation and caching. Lead engineer on the open banking integration team.
Joined as the 4th engineer. Shipped 12 product features across web and mobile. Owned the payments UI from design system through to production. Tech stack grew from Rails to Node + React under my tenure.
Delivered 15+ client projects across fintech, hospitality, and SaaS. Developed a strong client communication process that I still use today.
Education
What I offer
Specialized solutions tailored to your business needs.
End-to-end web applications built with modern stacks. From landing pages to complex SaaS products — fast, accessible, and scalable.
Starting at $1,500
Clean, conversion-focused interfaces designed in Figma and implemented pixel-perfectly. Wireframes, prototypes, and design systems.
Starting at $800
RESTful and GraphQL APIs built for performance and maintainability. Third-party integrations, auth systems, and database architecture.
Starting at $1,200
Code reviews, architecture planning, and performance audits. I help teams make better technical decisions and ship higher-quality products.
$120 / hour
Social proof
Marcus rebuilt our entire checkout flow in 6 weeks. Conversion rate went up 23%. He communicated every day, flagged problems early, and the code was the cleanest we'd ever seen.
We've worked with a lot of developers. Marcus is in the top 5%. He doesn't just build what you ask for — he asks the right questions and builds what you actually need.
Hired Marcus for a 2-week sprint that turned into an 18-month engagement. He became an integral part of our product team. Rare mix of speed, quality, and good judgment.
Contact
Open to new freelance projects and full-time roles. If you have something in mind — even if it's just a rough idea — drop me a message. I respond within 24 hours.