João S
Senior Software Engineer at Hub4Pay
Fairfield, Iowa, United States
Summary
👤
Senior🎓
Top SchoolJoão S is a Senior Software Engineer with nine years of full-stack experience building scalable web and payments systems using Nest.js, React, .NET (C#), Python, and cloud platforms like Azure and GCP. He has shipped production features across fintech (PIX and card platforms), SaaS incentives, DOOH wellness apps, and interactive retail experiences, blending backend reliability with polished front-end interfaces. Comfortable in CI/CD automation and microservices architecture, he routinely integrates external APIs and AI services (including OpenAI) to extend product capabilities. His background in game development and digital art gives him a creative edge for UX-focused engineering and interactive solutions. Based in Fairfield, Iowa, he pairs multilingualism and continuous learning with hands-on delivery at companies ranging from startups to market leaders like TOTVS.
9 years of coding experience
4 years of employment as a software developer
IELTS Preparation - 7.5 Band English, IELTS Preparation - 7.5 Band English at ILACCertificate Game Development, Certificate Game Development at Serviço Nacional de Aprendizagem IndustrialHigh School Diploma High School, High School Diploma High School at SESI - Serviço Social da IndústriaCertificate Graphics Computing, Certificate Graphics Computing at Seven Computação GráficaBachelor Computer Engineering, Bachelor Computer Engineering at Instituto Infnet
English, Portuguese, Portuguese
Github Skills (22)
instagram-api10
instagram9
django8
python8
projeto7
api4
android3
database3
react3
mongodb3
nodejs3
networking2
typescript2
javascript2
psd1
Programming languages (4)
Github contributions (5)
Sharmaxz/battle-dual
Oct 2019 - May 2020
Group project of Android
Contributions:37 commits, 2 PRs, 37 pushes in 7 months
android
Sharmaxz/django-matrix-field
Feb 2020 - May 2024
A Django app providing database store for matrices.
Contributions:1 release, 2 PRs, 3 pushes in 4 years 3 months
databasedjango
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