Own RAGi, our enterprise RAG platform, end to end: database design, API, and deployment. Took over the backend when its author moved to another product.

Node.js and Express over PostgreSQL, shipped as Docker images through Azure Pipelines.

Added single sign-on against each customer's own LDAP directory, and a provisioning flow for standing up a new tenant.

One codebase, configured per customer, so every deployment runs its own feature set.

Built RAGi's web interface from scratch.

Product owner for AIMochi, a consumer AI note-taking app with 5,000+ active users — React and MUI, rich text editor, voice input, LINE authentication.

Maintained and extended Infominer, the React platform where customers read the data we collect and process: online volume, keyword matching, news.

Reviewed front-end assignments for around 50 students, roughly ten submissions a day, writing feedback on each.

Answered course questions online.

Part-time, alongside a full-time engineering job.

Built and maintained single-page applications for enterprise clients in React and Vue.

Led the build of SinoPac Securities' content management system — editor, dashboard, and drag-and-drop layout — for a firm of 5,000+ staff, working alongside backend developers and product managers.

Customised four or more corporate websites in React: content editors, authentication, and API integrations.

Reworked a client's order flow, which they reported lifted monthly orders by 30%.

Refactored a client's website and React Native app; the client measured a 15% performance gain.

Started in the network operations centre: watched Kubernetes dashboards, triaged faults and escalated them — about half of my time at HTC.

My team owned Jira for the entire company: ticket workflows built for each team, with their permissions, accounts and templates.

Acted as the point of contact between the VR product teams and IT.

Maintained the company's ageing internal systems in .NET — mostly C#, with about a fifth of it still Visual Basic.

Cut designs into pages for the company's fashion e-commerce site, and kept the existing site running.

Looked after computers and equipment across the company.

Researched and pulled together material for my manager.