Djair Carvalho
Software Engineer at Decisiv, Inc.
Santa Catarina, Brazil
Summary
👤
Senior🎓
Top SchoolDjair Carvalho is a software engineer with 10 years of experience specializing in Ruby on Rails, API design, testing, and backend architecture. He has a strong track record building and maintaining web tools and ERPs across startups and mid-size companies, with hands-on experience in PostgreSQL, REST integrations, RSpec, and AWS deployments. Djair balances pragmatic engineering—focusing on security, performance, and code quality—with continuous learning, regularly studying open source projects and revisiting his own code to improve patterns. He has held both developer and tech lead responsibilities, delivering from specification to production while integrating third-party services and payment systems. Based in Florianópolis, Brazil, he combines deep Rails expertise with a background in Java EE and automated testing, making him a reliable technical reference for end-to-end web solutions.
10 years of coding experience
5 years of employment as a software developer
Bacharelado em Ciência da Computação, Ciência da Computação, Bacharelado em Ciência da Computação, Ciência da Computação at Universidade Federal do PiauíAnálise e Desenvolvimento de Sistemas, Engenharia de Software, Análise e Desenvolvimento de Sistemas, Engenharia de Software at IFPI - Instituto Federal do Piauí
English, Portuguese
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (45)
mercadopago9
payment8
stimulusjs8
payment-gateway8
webpack8
dry-rb8
coercion8
apollo7
ruby7
rails7
tailwindcss7
ruby-on-rails7
rapid7
nest6
tailwind6
Programming languages (4)
Github contributions (5)
djaircarvalho/dj_ro
Oct 2016 - Jun 2020
Simple project manager application to start learning Ruby on Rails
Contributions:1 PR, 5 pushes, 2 branches in 3 years 8 months
ruby-on-railsapplication-managerrailsrubyruby-learning
djaircarvalho/mercado_pago
Jun 2019 - Dec 2020
A simple wrapper for MercadoPago's advanced payment
Contributions:29 commits, 2 PRs, 25 pushes in 1 year 6 months
paymentsmercadopagopayment-gatewaypayment
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