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Claudia Ng
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Towards Data Science
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I’ll never forget the first time I got a PagerDuty alert telling me that model scores weren’t being returned properly in production.
Panic set in — I had just done a deploy, and my mind started racing with questions:
Debugging live systems is stressful, and I learned a critical lesson: writing production-ready code is a completely different beast from writing code that works in a Jupyter Notebook.
In 2020, I made the leap from data analyst to machine learning engineer (MLE). While I was already proficient in SQL and Python, working with production systems forced me to level up my skills.
As an analyst, I mostly cared that my code ran and produced the correct output. This mindset no longer translated well to being an MLE.
As an MLE, I quickly realized I had to focus on writing efficient, clean, and maintainable code that worked in a shared codebase.
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