Selected work
I mostly work on systems that already exist and are quietly struggling. Below are the engagements I can talk about publicly, with the numbers that came out the other side. Client names are replaced where contracts require it.
A freight operator had grown to 40 dashboards, all of them slow, all of them maintained by one increasingly tired analyst. We deleted two thirds of them and rebuilt the rest against a single Postgres instance with proper materialised views.
Scheduling engine for technicians who drive between jobs all day. The original implementation asked a third-party API for every leg; we moved the graph in-house and precomputed the expensive half of it.
Replaced a chain of cron jobs and half-written Kafka consumers with one pipeline that has an idempotency model the team can actually explain during an incident.
Four teams, four button components, three brand skins. We built the token layer first and let the components fall out of it, which is the only reason the system is still in use two years later.
A single-binary CLI that reads pg_stat_statements and tells you which
indexes are missing, which are dead weight, and what each one costs you in write
throughput. Started as an internal script.
The previous editor lost drafts on bad hotel Wi-Fi, which is the whole reason this project existed. Offline-first editing, deterministic conflict resolution, and an image pipeline that respects deadlines.
Nothing matches that.
Try a broader search term, or tell me what you are looking for.
Outcomes at a glance
| Project | Metric | Before | After |
|---|---|---|---|
| Northwind | Dashboard p95 | 4.1s | 380ms |
| Atlas | Route query p95 | 1.9s | 84ms |
| Relay | Duplicate events | 0.7% | 0.0002% |
| Lumen | Contrast failures | 212 | 0 |
| Quill | Publish-to-live | 90s | 4s |
Figures are from client-side telemetry and my own load tests. Where a number came from a vendor dashboard I say so on request — I would rather show the query than the graph.
I am happy to walk through architecture decisions, trade-offs and the parts that did not work. No slide deck required.