Darby Manning
Software Engineer
Senior software engineer and designer shipping fast, accessible products with Svelte, React and TypeScript. Leads architecture, design systems and delivery across web and native.
Employment
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- Leading design and development of websites and applications using React, Svelte and SvelteKit
- Developing bespoke Storyblok plugins and integrations for complex content workflows
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- Led the end-to-end redesign of Infinity's web and native products
- Architected and shipped the React Native app with a scalable state and navigation strategy
- Owned the greenfield Svelte/SvelteKit rebuild of the web app, defining engineering standards and CI/CD
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- Sole designer and engineer on projects, accountable for concepts through delivery on award‑winning work
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Software Engineer
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Projects
Infinity - Web App and Native App
infinity.health Led design and engineering across Infinity's web and native apps.- Owned SvelteKit web platform: real-time via WebSockets, OpenAPI client, functional error handling with neverthrow
- Architected React Native app: predictable state with Zustand, improved navigation, telemetry and testing
- Established engineering standards, CI/CD pipelines and a cross-platform design system
- Outcome: faster delivery cadence, higher reliability, better accessibility and UX
- Techologies
- React Native, Expo, Svelte, SvelteKit, Bun, Bun test, Playwright, WebSockets and Zod
Vector Suite - Marketing Site and Web App
vectorsuite.co.uk Led UI/UX and implementation for Vector Suite.- SvelteKit + Hygraph architecture with typed content models
- Fully bespoke front-end powered by a Zendesk integration for support and help centre
- Design system foundations for consistent marketing and app surfaces
- Techologies
- Svelte, SvelteKit, Hygraph and Zendesk
The Lane - Marketing Site
thelane.co.uk Engineering for The Lane marketing site.- Performance-focused Next.js build with modern tooling
- Close collaboration with agency team and designers
- Automated testing and accessibility improvements
- Techologies
- React, Next.js, Contentful and React Testing Library
Mosaic Middle East - Marketing Site
mosaicmiddleeast.org End-to-end UI/UX and build for Mosaic Middle East.- SvelteKit front-end with WordPress API content pipeline
- Stripe integration for secure donations
- Accessible, performant marketing experience
- Techologies
- Svelte, SvelteKit, WordPress API and Stripe
Contact
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