Leonardo Ferreira
Senior Backend Engineer Integrations APIs MERN ClickHouse
Minas Gerais, Brazil
Summary
👤
Senior🎓
Top SchoolLeonardo Ferreira is a senior backend engineer and former CTO with 10+ years building integrations, APIs and scalable SaaS platforms across Node.js, TypeScript, MERN and ClickHouse. He has launched and scaled multiple startups and products—from leading Left Hook’s integrations for Canva and DocuSign to growing Sellentt from a three-person founding team into a 30+ employee company serving 100+ clients. Comfortable both as an individual contributor and engineering manager, he blends hands-on systems design with delivery leadership, cloud infrastructure (AWS/GCP/Terraform) and serverless architectures. His stack fluency spans JavaScript/TypeScript, Python, Java and mobile tech, and he’s contributed to internal frameworks like Frigg to accelerate integrations work. Based in Minas Gerais, Brazil, he’s recently deepening AI expertise through postgraduate study while maintaining a pragmatic focus on shipping reliable, business-facing systems.
10 years of coding experience
6 years of employment as a software developer
Fédération Internationale de l'Art PhotographiqueBacharel Computer Science, Bacharel Computer Science at Centro Universitário da Fundação Educacional Guaxupé - UNIFEGMaster of Business Administration - MBA Gestão de Infraestrutura de TI em Nuvem, Master of Business Administration - MBA Gestão de Infraestrutura de TI em Nuvem at IGTI
English, Portuguese
Github Skills (20)
in-progress10
entity-framework-core9
webapi9
asp-net-core8
csharp8
asp-net7
dotnet7
datetimepicker5
datepicker5
bootstrap5
notification3
log4net2
ddd2
notification-center2
blazor2
Programming languages (2)
Github contributions (5)
Leolima32/game-store
Sep 2017 - Feb 2023
A complete game store using ASP.NET Core framework
Contributions:136 commits, 19 PRs, 173 pushes in 5 years 5 months
dotnetaspin-progressasp-netnet-core
Leolima32/ef-core-generic-repository-abstraction
Apr 2022 - Jun 2024
Contributions:20 pushes, 1 branch in 2 years 2 months
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.