João Martins
Senior Backend Developer at Xapo Bank
Paraná, Brazil
Summary
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Senior🎓
Top SchoolJoão Martins is a Senior Backend Developer based in Paraná, Brazil, with over a decade of experience building scalable web and AI/ML systems. He has driven performance and reliability improvements at Xapo Bank by optimizing queries, implementing caching, and managing cloud infrastructure with Terraform on AWS/Azure. João blends Python-first backend expertise (Flask, Django, Celery) with practical ML production work—leading end-to-end AI pipelines for real-time fraud detection and deploying GPT-3 driven features. His background spans startups and fintechs, shipping predictive models for churn, document classification, and tax automation while maintaining CI/CD and observability for microservices. Comfortable across the full stack, he pairs hands-on coding with infrastructure ownership and a track record of integrating third-party payment and crypto services. A pragmatic problem-solver, he often bridges data science and engineering to turn experimental models into reliable, production-ready systems.
12 years of coding experience
12 years of employment as a software developer
Bachelor's Degree, Computer Information Systems, General, Bachelor's Degree, Computer Information Systems, General at Faculdade FESPProfessionalizing Course, PHP Advanced, Professionalizing Course, PHP Advanced at Elaborata Informática
English, French, Spanish, Portuguese
Stackoverflow
413reputation
32kreached
5answers
7questions
Github Skills (109)
python10
cryptocurrency10
telegram10
algotrading10
heroku10
pip10
markov-chain10
ai10
telegram-bot10
artificial-intelligence10
bitcoin10
zshrc10
docker10
packaging10
herokuapp10
Programming languages (6)
Github contributions (5)
p-zombie/freqtrade
Aug 2021 - Jan 2023
Automatically deploy freqtrade to a remote Docker host and auto update strategies.
Contributions:1 review, 3542 commits, 3 PRs in 1 year 5 months
freqtradehostauto-updatedockerupdate
joaorafaelm/karnaugh
Mar 2014 - Sep 2019
Contributions:8 commits, 7 pushes, 1 branch in 5 years 7 months
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