Guilherme Oliveira
Senior Software Engineer Full-stack at Secretaria da Fazenda do Estado do Ceará
Ceará, Brazil
Summary
👤
Senior🎓
Top SchoolGuilherme Oliveira is a Senior Full-stack Software Engineer with over six years building scalable MarTech, B2B, TaxTech and GovTech systems and nine years of industry experience overall. He drives end-to-end delivery—architecting systems, optimizing databases and owning CI/CD pipelines—to produce reliable, auditable solutions for state-level fiscal and infrastructure operations. Notable wins include an 80% reduction in query times through PostgreSQL refactors and modernizing legacy web tooling into a Next.js PWA that improved field accessibility for 300+ workers. Comfortable across Node.js/TypeScript, Java/Spring Boot and relational databases, he pairs strong engineering rigor with clear stakeholder communication to simplify complex fiscal workflows. Colleagues describe him as proactive, detail-oriented and fast-learning—traits that help him bridge policy-driven requirements and production-grade software.
8 years of coding experience
6 years of employment as a software developer
Bachelor Systems and Digital Media, Bachelor Systems and Digital Media at Federal University of Ceara
Github Skills (22)
react-responsive9
apollo-server8
expressjs7
calendar-widget7
react-component7
responsive6
react5
nodejs5
webapp5
service-worker5
teste5
api4
workbox4
nextjs4
gio4
Programming languages (4)
Github contributions (5)
GennaiAPI/gennai-api
Dec 2021 - Feb 2022
A Digimon-based API made in NodeJS using GraphQL.
Contributions:90 commits, 38 PRs, 76 pushes in 2 months
apiexpressjsprismajavascriptexpress
GennaiAPI/gennai-node
Dec 2021 - Feb 2022
NodeJS library made to retrieve data from Gennai API.
Contributions:1 PR, 14 pushes in 1 month
apigennai-apinpm-packagejavascriptnodejs-library
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