Felipe Krein
Software Engineer at Handoff - AI Estimating for Remodelers
São Paulo, Brazil
Summary
👤
Senior🎓
Top SchoolFelipe Krein is a software engineer based in São Paulo with nine years of professional experience and six focused on building production-grade web and mobile applications using React, React Native, Node, and Next.js. He has a track record of shipping high-impact features and performance improvements—most recently reducing crash rates dramatically and modernizing a React Native app workflow while launching investment products that attracted millions in new capital. As founder of an AI-powered SaaS (Deckify.ai) he built and scaled a product to thousands of users and exited via acquisition, blending product intuition with hands-on engineering. His background in business and early roles in sales and private equity give him an uncommon mix of commercial acumen and technical delivery discipline. Felipe is comfortable across frontend, mobile, and backend stacks and has repeatedly improved developer experience and reliability in fast-moving teams. He brings an entrepreneurial mindset to engineering problems, often prioritizing measurable outcomes like reduced crashes, faster dev cycles, and clear business impact.
9 years of coding experience
13 years of employment as a software developer
Bachelor's degree, Business, Bachelor's degree, Business at Fundação Getulio VargasPostgraduate Degree, Computer Science, Postgraduate Degree, Computer Science at Trybe
English, Portuguese
Github Skills (25)
morphing9
frontend8
react8
appsflyer8
animation8
react-native7
javascript7
ios7
tooltip7
expo7
android7
mobile6
sdk6
typescript6
react-native-app6
Programming languages (2)
Github contributions (5)
fkrein1/trybe-course
Jan 2022 - Feb 2023
Contributions:14 PRs, 168 pushes, 15 branches in 1 year 1 month
fkrein1/fkrein1
May 2022 - Feb 2026
Contributions:153 pushes, 1 branch in 3 years 9 months
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