Funding arbitrage scanner · Crypto
AfterFees
80,000+ funding pairs across 50 exchanges, priced live — and ranked by what’s left after fees, slippage, size limits and breakeven time.
Independent builder · Tools for trading
Fig. 01
Cost surface
Real-time WebGL
Cost surface
Real-time WebGL
I sell on Amazon and trade crypto — so I build the tools I wish existed. Designed, engineered and shipped end to end.
See the work(01)Principle
Markets reward the people who see the whole mechanism. Most tools show you a number. Mine show you what remains — after every fee, every spread, every cost.
Projects
0
Across crypto, prediction markets and Amazon.
Amazon marketplaces
0
Every country site Listing Grabber works on.
Exchanges
0
Priced live by AfterFees.
Builder
0
One person. Idea to production.
(02)Selected work
Work(06)
Six pieces, three markets. Each one built around what actually remains after costs.
Prediction market research · Polymarket
Crypto Oracle
Independent strategy accounts, forward-recorded on Polymarket’s Bitcoin five-minute markets. Rules frozen before the first trade.
Browser extension · Amazon
Listing Grabber
Every image, creator video and line of copy on an Amazon listing — pulled at original resolution, filed in one folder, in one click.
Seller intelligence · Amazon
Seller BI
Sales, ads, inventory and true profit — read every morning, with an action plan attached. Built for the team that runs the store.
Trading copilot · Crypto
Kestrel
Market-wide scans, liquidation maps, order flow and on-chain flows in one screen — with LLM decision support and one-click execution.
Cross-border e-commerce · SaaS
Shop OS
One system, many independent storefronts. Mobile-first shops for cross-border sellers — every e-commerce essential, none of the commission.
(03)Method
Mechanism first.Results in context.
Every tool starts the same way — and ends with a number you can trust.
Define the mechanism
Start with how the market actually works — how money is paid, charged and settled. Then ask one specific question.
Count every cost
Fees, spreads, slippage, ad spend, refunds, capacity, timing. A result only means something at the size and under the assumptions shown.
Label the evidence
Keep what is measured, what is estimated and what is simulated apart — so nobody mistakes one for another.
Ship, then sharpen
Put it in front of real use early. Keep what earns its place. Shelve what doesn’t — and say so.
(04)Index
Everything.
Shipped, building, researched, shelved. The full list — because the ones that didn’t make it taught the most.