Data Blacksmith @datablacksmith

Helping investment managers make smarter, faster decisions by building robust data pipelines and applying 20+ years of expertise in data science thedatablacksmith.substack.com France Joined June 2025

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Data Blacksmith @datablacksmith

2 months ago

Business leaders and executives should realize that rushing toward complex AI solutions to impress shareholders often wastes money and delivers worse results than simpler approaches would.

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Data Blacksmith @datablacksmith

2 months ago

Your backtest is lying if your timestamps don’t line up. Mismatched data kills performance and trust, fast. - Audit all data feed time zones - Convert timestamps at ingestion - Store everything in UTC, no exceptions - Sync system clocks hourly - Monitor for latency drift

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Data Blacksmith @datablacksmith

2 months ago

Bad Data Is a Silent Killer—And It’s Sabotaging Your Decisions Right Now #DataScience

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Data Blacksmith @datablacksmith

2 months ago

Bad data doesn't just break dashboards — it breaks trust. Trust in the systems. Trust in the team. Trust in the decisions that follow. Once that trust erodes, it doesn’t matter how good your models are. The story's already over before the first query runs. #DataScience

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Data Blacksmith @datablacksmith

2 months ago

In quant investing, there are no promises—only probabilities. You don’t predict outcomes; you design for them. #Investing

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Data Blacksmith @datablacksmith

2 months ago

Data quality is the first step to implement in any data related project. Here is why...

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Data Blacksmith @datablacksmith

2 months ago

Do you have the feeling your memory is fading away due to your use of LLM? There is a "cure".

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Data Blacksmith @datablacksmith

2 months ago

Data quality isn’t a "nice-to-have." It’s the difference between "We caught this before deployment" and "Why did the board meeting turn into a courtroom drama?" #dataengineering

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Data Blacksmith @datablacksmith

2 months ago

Everyone wants “real-time data” until they see the cost, the infra complexity, and the chaos it introduces. Batch is a feature, not a bug. #DataEngineering #Streaming #E