What happens when you have to rebuild the whole tech area of a data science company and you have the authority to drop python and JS? Dotnet and F#, that's what (at least for me, it was). This talk is my tale of being the CTO of a data science consultancy and: • Deciding to drop the existing investment on typescript and python and going on F# and dotnet; • Having to grow a team from ~4 to ~12 in the span of a year; • While facing the usual chaotic environment of a startup. What I promise with this talk is: 1. How it was to grow a high performing functional programming team in a developing country; 2. What was the impact that dotnet and F# brought to the table. Download .NET 8 - https://aka.ms/get-dotnet-8 Hack Together - https://aka.ms/hacktogether/dotnet Learn collection - https://aka.ms/learn-dotnet-8 .NET 8 Survey - https://aka.ms/dotnet-survey Local Events - https://aka.ms/dotnetconf-local-event Hero blog - https://aka.ms/dotnet8blog Blog: https://aka.ms/dotnet/blog Twitter: https://aka.ms/dotnet/twitter TikTok: https://aka.ms/dotnet/tiktok Mastodon: https://aka.ms/dotnet/mastodon LinkedIn: https://aka.ms/dotnet/linkedin Facebook: https://aka.ms/dotnet/facebook Docs: https://learn.microsoft.com/dotnet Forums: https://aka.ms/dotnet/forums 🙋‍♀️Q&A: https://aka.ms/dotnet-qa 👨‍🎓Microsoft Learn: https://aka.ms/learndotnet #dotnet