Client projectData pipelinesFinance and insurance
Justin Hilgart, an independent trader.
Proof
1 line from the client.
great worker
An independent trader had alerts in one format, market history in another and no dependable way to ask what a price was at the moment an alert fired. Every backtest started with the same data wrangling, done by hand.
Data pipeline
A module that enriches trade alerts with historical bars from the Polygon API
Timestamp normalisation across the alert feed and the market data, so the two line up to the minute
Price lookup at a given time, including the edge cases around market open and close
Dataset preparation for analysis, written so each backtest starts from the same clean table
Walkthroughs of the code with the trader as the tooling grew, over two years of retained work
The trader spends his time on the strategy, not on the data underneath it. He kept the retainer running for 26 months and left a 5-star review when it closed in May 2026.
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