Companies
A list of companies which list (or have listed) backtrader or for which a public usage reference exists (Professional Profile, Blog Entry, Articles, ...)
Note
This is not any kind of endorsement, proof of work, official sanctioning (and any other disclaimer)
Note
Below "companies" you will find Un*x like distributions which have chosen to have it available
Companies
Agora EAFI
From a LinkedIn profile and the Rankia/Finanzas.com articles
Alpaca
Alpha Over Beta
Total
Part of the job of Karl Vernet.
Data Trading
Small shop with articles, offering services for algorithmic trading.
Intrinio
NORGATE DATA
Quantify Capital
QuantInsti
From blog entries, job offers ...
StormDealers Ltd.
Listed on the website
TradeFab
Quote: "Backtrader Development Development of Python Backtrader scripts, including backtesting/optimization support."
ZuluQuant
Listed backtrader as one of the technologies used and posted a job offer in the community