Gus Gaidelevicius

I create clean, scalable web apps and static sites with TypeScript and React. Focused on performance, maintainability, and making things work seamlessly.

Based in Perth, Western Australia.

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Projects

brand image of the "normally" app

Normally

Designed and built a native macOS application in Swift and SwiftUI that automatically normalises audio levels across video libraries. Implemented real-time folder monitoring with security-scoped bookmarks, an actor-based concurrent processing queue, and bundled FFmpeg integration for sample peak and EBU R128 loudness normalisation. Built smart file tracking using content fingerprints, per-folder configuration overrides, external drive awareness, and multi-tier retry logic for locked or failed files. Focused on a minimal, set-and-forget interface that stays out of the way while keeping processing history fully transparent.

View Normally on the App Store

screenshot of the okfine.app website

okfine.app

Designed and built a decision wheel web application in Next.js to help users move past decision fatigue with minimal cognitive overhead. Implemented weighted outcomes, recency bias controls, and shareable, persisted wheels, with local-first settings for anonymous users and seamless persistence for signed-in accounts. Focused on a calm, fast interface with smooth motion, responsive state updates, and accessible interactions that remain reliable under frequent use.

View the “okfine.app” website

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AnkiForge

Designed and built a full-stack Next.js platform that processes heterogeneous document formats end-to-end, from binary parsing to Anki-compatible export. Architected a server-side pipeline that converts unstructured content into a valid SQLite-backed .apkg using SQL.js and JSZip, with strict validation, rate limiting, and queuing for reliability at scale. Integrated Google OAuth, Prisma/Postgres persistence, and Stripe billing to support authenticated usage, quotas, and subscriptions within a SaaS workflow.

View the “AnkiForge” website

Glucose Please

Designed and built a native macOS status bar application using Swift and SwiftUI for seamless glucose monitoring. Implemented real-time Dexcom sensor integration with comprehensive accessibility support. Developed an intuitive graph visualisation system that displays historical glucose trends with customisable time ranges and alert thresholds. Focused on creating a lightweight, unobtrusive interface that keeps essential health data readily accessible without disrupting workflow.

View the “Glucose Please” website

screenshot of the gus' seo course for content editors website

Gus' SEO course for content editors

Designed and built a comprehensive SEO training platform using Next.js and MDX for content delivery. Implemented accessibility-first information architecture with mobile-responsive design, comprehensive keyboard navigation, and screen reader support. Developed a scalable content management system that transforms complex SEO concepts into practical, actionable guidance for content editors working in healthcare and research organisations.

View the “Gus' SEO course for content editors” website

screenshot of the ballet 4 you website

Ballet 4 You

Designed and built a fully accessible, high-performance website using Next.js and Payload CMS. Leveraged Cloudflare R2 and Web Workers for scalable, cost-effective object storage and edge delivery, ensuring rapid load times worldwide. Prioritised accessibility and seamless keyboard navigation throughout, with a clean, responsive interface optimised for all devices. Delivered a robust, maintainable architecture that balances speed, usability, and modern best practices.

View the Ballet 4 You website

screenshot of the the kids research institute australia website

The Kids Research Institute Australia

Single-handedly overhauled a bloated, outdated .NET MVC codebase from 2015 under tight deadlines, rewriting the vast majority of it to modernise performance, design, and accessibility, including full keyboard navigation. Migrated from Node 4 to 20, untangling long-deprecated dependencies with no migration path, manually rewriting and substituting where needed to bridge years of breaking changes. Recreated internal tooling lost to a defunct private npm repo and automated build pipeline steps to streamline deployment.

View the The Kids Research Institute Australia website

screenshot of the inklings website

Inklings

Built a fully statically-generated site with Next.js and a decoupled headless CMS, optimising for speed, accessibility, and seamless keyboard navigation. Integrated Amazon S3 for efficient object storage and Amazon SES for transactional emails. Designed and developed a clean, performant architecture to ensure fast load times and a smooth user experience. Focused on accessibility best practices, making the site fully navigable for all users while maintaining a lightweight, efficient build.

View the Inklings website

screenshot of the weather please browser extension

Weather Please

Created a lightweight, fast, and accessible browser extension for checking the weather without distractions. Designed and developed a clean, easy-to-read interface with full screen reader support and seamless keyboard navigation. Implemented multi-language support for 14 languages and optimised performance to keep it fast and efficient. Focused on simplicity and usability, ensuring the extension stays out of the way while providing essential weather information.

Get Weather Please from the Chrome Web Store