Flipside

Its platform held over seven trillion rows of blockchain data. I worked there from 2021 to 2025. Flipside sold its blockchain data business in May 2026 and runs as edisyl now.

On the data side, I worked on the Go services that pulled new blocks from the chains in near real time. I also helped build an API on Cloudflare Workers that served chain data from caches close to whoever was asking. My part was support for Ethereum-style chains, plus a setup that ran the whole thing on a laptop for testing.

Payments took more of my time. Flipside paid rewards in crypto to analysts in its community, and I led the build of the gateway that sent each payout on whichever chain the award named. It had reconciliation, which checks that what went out matches what was owed, and fallback paths backed by S3 for when a step failed.

A new rewards program started as a folder with two files: a config, and the SQL query that decided who got paid what. Someone on the finance or analytics side added the folder and opened a pull request, so nobody there had to touch the code that did the paying. I built that setup too, with a test switch that let a program run without paying anyone.

Stack

Languages

TypeScriptGo

Data

Amazon S3

Infrastructure

Cloudflare Workers