Leonardo Galesky
Staff Engineer at Adyen
Amsterdam, North Holland, Netherlands
Summary
👤
Senior🎓
Top SchoolLeonardo Galesky is a Staff Engineer based in Amsterdam with nine years of experience building scalable, developer-friendly backend systems. He has progressed from founding engineering roles and a CTO position to senior and staff engineering roles at Klarna and Adyen, blending product-minded engineering with leadership across startups and payments. An active open-source contributor, he improved type safety and developer ergonomics in the widely used NestJS framework by enhancing typed decorators and unit tests. He holds an MSc in Computer Science and has taught at university level, reflecting a commitment to both rigorous engineering and mentorship. Less obvious: he pairs hands-on TypeScript expertise with entrepreneurial instincts from founding companies, enabling pragmatic solutions that prioritize both developer experience and production reliability.
9 years of coding experience
9 years of employment as a software developer
Master of Science (MSc) Computer Science, Master of Science (MSc) Computer Science at Universidade Estadual do Oeste do Paraná
English, Portuguese, Spanish
Github Skills (10)
nestjs10
typescript10
javascript10
nodejs10
typescripts10
typescript-types10
application-framework9
app-framework9
web-framework9
unit-testing8
Programming languages (8)
Github contributions (5)
nestjs/nest
Dec 2019 - Jan 2020
A progressive Node.js framework for building efficient, scalable, and enterprise-grade server-side applications with TypeScript/JavaScript 🚀
Role in this project:
Back-end Developer
Back-end DeveloperContributions:4 reviews, 9 commits, 1 PR in 28 days
Contributions summary:Leonardo primarily contributed to enhancing the NestJS framework, focusing on typed decorators using generics. Their work included creating and refining decorators for HTTP route parameters, improving type inference for custom decorators, and implementing unit tests to validate these changes. The commits demonstrate a focus on improving type safety and developer experience within the framework's core functionalities.
es8server-sideon-toptypescript-frameworkcnode
galesky/aws-billing-slack-lambda
Jun 2020 - Jul 2020
Simple AWS Lambda powered Slack bot that reports your AWS Costs for the current month to a channel
Contributions:1 release, 7 commits, 3 PRs in 28 days
reportsserverlessaws-lambdabotslack-bot
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