Interview: A Developer’s Journey with QuantConnect and Lean

Curious about Lean and QuantConnect from a real user’s perspective? Check our Lean platform review). Introduction In this post, we sit down with Alex, a developer-turned-algo-trader, to discuss his experience working with QuantConnect and its open source engine, Lean. He walks us through the learning curve, the strengths of the platform, and how he uses it in his daily trading workflows. Q1: What got you interested in QuantConnect and Lean? Alex: I was initially exploring ways to backtest some intraday strategies in equities and crypto. Most platforms I tried felt either too basic or too closed-off. QuantConnect immediately stood out because of the Lean engine being open source. I loved the idea of being able to run serious quant research and backtesting in my own environment. ...

June 19, 2025 · 3 min