Guilherme Quintelas
Senior Software Engineer at Constructor
Rio de Janeiro, Brazil
Summary
👤
Senior🎓
Top SchoolGuilherme Quintelas is a Senior Software Engineer based in Rio de Janeiro with nine years of hands-on experience building full-stack and backend systems across startups and product teams. He combines leadership—having served as Tech Lead and co-founder/CTO—with practical engineering skills in Node.js microservices, GraphQL, Next.js, MongoDB and AWS, and has a track record rewriting core financial flows and architecting configurable business modules. He’s passionate about developer productivity, having created QA infrastructure, monitoring standards, and quality-of-life tools that cut friction for engineering squads. Notably, he designed production integrations with Brazilian credit reporting (Serasa) and automated complex loan and invoicing workflows that non-technical stakeholders can configure. Curious and self-driven, Guilherme invests in continuous learning and open development, reflected in a steady GitHub presence and a history of shipping lighthouse-optimized front-ends and extensive automated tests.
8 years of coding experience
4 years of employment as a software developer
Computer Science, Computer Science at Universidade do Estado do Rio de JaneiroAnalysis and Systems Development, Analysis and Systems Development at Instituto Infnet
English, Portuguese
Stackoverflow
95reputation
6kreached
2answers
5questions
Github Skills (116)
ui-components10
apollo-client10
javascript10
apollographql10
vue10
caching10
barrage10
semantic10
graphql-client10
material-components9
command-line-interface9
private-repository9
vue-material9
backend9
ui-design9
Programming languages (5)
Github contributions (5)
guiquintelas/blue-box
May 2019 - May 2020
Contributions:29 commits, 11 pushes, 1 branch in 1 year
guiquintelas/nestjs-chat-api
Oct 2020 - Nov 2020
Contributions:50 commits, 18 pushes, 1 branch in 10 days
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