Projects

I built a video player that brings YouTube's controls and playback behavior to local files and remote videos, on desktop and mobile. I also use it in other projects.

• Playing local files, media URLs, and HLS streams
• Recreating YouTube's desktop and mobile controls
• Restoring playback positions and saved file references

I recreated the lockpicking puzzles from Gothic 1 Remake, with a solver and practice mode for trying different locks.

• Modeling and rendering the lock mechanism
• Solving and generating puzzles in a web worker
• Building a lock catalog and shareable configurations

I built a tool for training AI models to play games, with remote training workers and a dashboard for comparing runs and configuring experiments.

• Building the game and reinforcement-learning pipeline
• Running training on local and remote workers
• Finding and fixing a TensorFlow.js bug

I built an app that lets guests scan a QR code and upload event photos and videos straight to the organizer's OneDrive.

• Connecting event uploads to OneDrive
• Resuming interrupted uploads
• Building private galleries with invitation links

I built a better Kahoot! with a quiz editor, presenter controls, and live answers from participants' phones.

• Building the quiz editor and presenter controls
• Synchronizing questions and answers across devices
• Managing join codes and participant scores

I built a habit tracker around a customizable panel of clickable tiles. Tasks have their own schedules and scores, and the tiles can be rearranged and resized.

• Building clickable, draggable, and resizable task tiles
• Preserving task history when settings change
• Charting daily and weekly progress

I built Gerard Almirall's website to show his artwork and exhibitions, with an admin area where he can update the content himself.

• Designing artwork galleries and exhibition pages
• Building an admin area for images and content
• Adding responsive images and thumbnail loading

I built Qortex's web editor for creating workflows and org charts. You can also use its AI assistant to read and edit those diagrams.

• Building the workflow and org-chart editor
• Connecting workflow steps to external APIs and n8n
• Adding AI tools for creating and editing diagrams

I built a site for organizing talks and discussions, with sign-ups and an archive of recordings and presentation materials.

• Scheduling talks and managing attendance
• Sharing recordings and presentation materials
• Building member sign-in and access controls

I built a browser app for exploring my spending, with custom categorization rules and bank transactions stored locally.

• Importing bank CSVs and merging transactions
• Building custom categorization rules
• Preparing transaction data for charts

I built a website for Silas König's immigration consultancy, with his services and contact details on one page.

• Designing the service and contact page
• Adapting the layout for phones and larger screens
• Setting up the website's hosting and domain

I built a tool that generated DataStage replacements for roughly 1,200 IBM Data Manager jobs, with little direct access to the client's systems.

• Reverse-engineering Data Manager job definitions
• Generating DataStage job files
• Building tools to inspect jobs and parser errors

I built an app for transcribing recordings, with a choice of transcription models, timestamps, and editable speaker names.

• Managing recording uploads and transcription jobs
• Connecting multiple transcription providers
• Displaying timestamps and editable speaker names

I redesigned two ETL pipelines that together touched more than 20 tables, cutting their combined runtime by roughly 80% by moving less data between the database and DataStage.

• Redesigning two large ETL pipelines
• Reducing data transfers between the database and DataStage
• Building five more ETL pipelines

I built a chat assistant that sits inside Cognos reports and answers questions about the data on screen.

• Building a chat interface inside Cognos
• Connecting a Custom Component to a Jupyter Notebook
• Giving the assistant access to report data

I researched language models, coordinated a four-person team, and built three prototypes for BI reports and internal tools.

• Researching language models before the team formed
• Planning and coordinating a four-person team
• Building three AI prototypes

I traced incorrect report values through a large reporting system that was still being built, then turned the checks I kept repeating into reusable SQL templates.

• Investigating tickets and tracing reporting errors
• Inspecting SQL generated by Cognos
• Building reusable SQL checks

I took over an unfinished Cognos reporting project, built a Python toolkit for bulk changes, and cut load times from more than three hours to about ten minutes.

• Cognos Report Development
• Custom Component Development
• Python Toolkit for XML modification