Leandro Costa
Founder & CEO at Lobby
São Paulo, Brazil
Summary
🤩
Rockstar🎓
Top SchoolLeandro Costa is a founder and CEO with 13 years of hands-on technology and startup leadership, currently building Lobby to help companies scale culture and brand through thoughtful welcome kits and gifting. He combines early-stage product craftsmanship—UI/UX, front- and back-end development—with later-stage responsibilities in architecture, hiring and scaling teams to 100+ people and raising venture capital. Previously CTO at Creditas, he helped create a digital lending platform that significantly lowered borrowing costs for Brazilians, and he has founded or co-founded multiple startups across marketplaces and services. An active developer and contributor, he improved usability and test coverage for the popular vanilla-masker input-masking library, showing attention to both UX details and engineering quality. Based in São Paulo, he pairs an MBA with deep technical roots and a management style that emphasizes trust, autonomy and continuous improvement to turn motivated teams into strong problem solvers.
13 years of coding experience
7 years of employment as a software developer
Fédération Internationale de l'Art PhotographiqueMaster of Business Administration (M.B.A.) Business Administration and Management General, Master of Business Administration (M.B.A.) Business Administration and Management General at FGV - Fundação Getulio VargasExtreme English Course English Language and Literature General, Extreme English Course English Language and Literature General at Impact English College
Portuguese, English, Spanish
Stackoverflow
46reputation
1kreached
1answer
0questions
Github Skills (5)
html10
javascript10
testing9
front-end-development8
actionmailer6
Programming languages (2)
Github contributions (5)
vanilla-masker/vanilla-masker
May 2014 - Feb 2016
VanillaMasker is a pure javascript mask input
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:63 commits, 9 PRs, 15 pushes in 1 year 9 months
Contributions summary:Leandro primarily contributed to improving the functionality and usability of the `vanilla-masker` library. They focused on enhancing the `maskMoneyElement` method, which is used for masking money input fields, and implemented new features related to pattern masking. Additionally, the user added unit tests to ensure the correctness of the masking functions and refactored the code to create a more flexible masking system. These changes involved modifications to both JavaScript code and HTML examples.
inputmaskmaskcssjavascriptnpm-package
lobby-tech/lobby.tech
Aug 2019 - Apr 2025
Landing page do site https://lobby.tech
Contributions:374 pushes in 5 years 8 months
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