Quantitative trading engines, back office software for trades, a compliance platform, a forensics stack, sites, apps and the tooling underneath them. Each one says what it was for, what was built, what it achieves and what the hard part was.
Three things worth knowing about how this page is written.
Every entry is running software with a test count attached, not a proposal or a concept. Most were built through Colabs, where a founder funds the build and keeps equity, so the work had to survive someone else's expectations rather than only our own.
Trading engines, bookkeeping software and pool inspections look unrelated until you notice the pattern: measure it, refuse to launch on a guess, and make the failure path the part you engineer hardest.
Several of these say paper-locked, gated or pre-launch. That is what they are. A portfolio where everything is 'in production' is a portfolio that is lying about at least one thing.
7 projects
A research terminal that tries to disprove its own findings before it believes them.
One broker over 105 exchanges, with the live switch deliberately hard to flip.
An options terminal with greeks, a tape backtester and cross-venue pricing across five venues.
Native on-chain vaults with a faithful trade-mirroring bridge, plus a funded-track submission.
Copy trading judged on tracking error and prop-firm rule headroom, not on advertised returns.
A parity-arbitrage engine that reports an honest $1,000 to $1,005 rather than a fantasy.
Automated analysis of market-making runs, so strategy decisions come from data rather than feel.
4 projects
Overdue invoices chase themselves, in the business owner's name, and payments reconcile on arrival.
Turn a business's own documents into an embeddable chatbot that cites its sources.
Bookkeeping assistance that runs on the user's own machine rather than in someone else's cloud.
842 pages, a plain-English quoting engine, and a validator that fails the build on thin content.
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The catalogue prices the patterns behind all of this. Describe your version and get it scoped without a call.