Fintech & payments
Ledgers that balance to the penny, idempotent payment flows, reconciliation, and payout state machines built for real money and audits.
We don't just build apps. We build the systems apps are built on — payment rails and ledgers, AI agent platforms, and full-stack product that ships. This page is the lab copy of that claim: one hand-written file — no frameworks, no libraries, no images — every pixel, chart, and animation drawn in code.
§ 01 · Interaction engineering
A pocket concierge on a phone modeled in pure CSS 3D — no image files, no WebGL. Drag it to spin it. The conversation is a scripted demo running in your browser: the streaming, typing states, and quick replies are the real interaction engineering; wire it to a model and it ships.
§ 02 · Systems, honestly simulated
Three product surfaces we design and build — payments infrastructure, an algorithmic trading desk, and an AI-agent control plane. Every number carries context; every scale starts at an honest zero. The telemetry is simulated and labeled — the engineering is the point.
Settled volume (area) against authorization attempts (line). Y-axis from zero.
Share of settled volume.
| Txn ID | Method | Amount | Corridor | Status | ms |
|---|
Mark price with the engine's conviction band. Entries flagged where score > threshold.
Classifier output, updated each bar.
Message flow between agents. Pulse = active hop.
Tasks/min with model-detected anomaly band.
Throughput dipped 14% at 14:20 — correlates with a tool-timeout spike on agent‑07. Suggested next step: raise its retry budget and re-route to the warm pool.
§ 03 · What we build
From the database schema to the last easing curve — we own the whole stack, obsess over the seams between the layers, and grade every release before it ships.
Ledgers that balance to the penny, idempotent payment flows, reconciliation, and payout state machines built for real money and audits.
Multi-agent orchestration, RAG pipelines, tool use, and guardrailed control planes — AI systems that are observable, explainable, and safe.
React/TypeScript front ends, Node & Rust services, and the interaction craft that makes a product feel inevitable — like this page.
Honesty note: fonts (Satoshi + IBM Plex Mono) are the only external asset, and every dashboard number above is simulated and labeled as such. The same rule our reports live by — an estimate never dresses as a measurement.