Yuri Hallan vasconcelos
@yurihallanvasconcelo
I modernize full-stack web applications, improving performance, reliability, and developer workflows.
BrazilWhat I'm looking for
I've modernized JavaScript core scripts at SIDI, improving performance by 30%, and optimized UI navigation for a 15% smoother, more responsive experience. I also supported Spanish localization for products serving 2 million users.
Across SIDI, CREATHUS, and SEMAD, I've built and improved full-stack applications with JavaScript, TypeScript, Node.js, React, SQL, and Java. I've improved REST API response time by 20%, accelerated Oracle SQL workflows by 60%, and used automated testing, CI/CD, documentation, and Git to make delivery more reliable.
Experience
Work history, roles, and key accomplishments
Software Developer
SIDI
Jan 2022 - Jan 2026 (4 years)
Led technical modernization of obsolete functions, achieving a 30% performance gain in the core JS scripts. Optimized UI for 15% smoother navigation and worked on international projects with Spanish localization.
Software Developer
CREATHUS
Jan 2021 - Dec 2021 (11 months)
Created app interface from Xdesign prototypes and improved API response by 20% using Node.js and TypeScript with JWT authentication. Implemented automated tests with Jest.js and CI/CD.
Web Development JR
SEMAD
Jan 2018 - Dec 2021 (3 years 11 months)
Proactively identified bottlenecks in internal processes and implemented SQL performance improvements on Oracle, resulting in a 60% gain in system agility. Enhanced and fixed internal system functionality, reducing bugs by 20%.
Education
Degrees, certifications, and relevant coursework
UNINORTE – LAUREATE INTERNATIONAL
Bachelor of Science, Computer Science
2015 - 2018
Bachelor of Science in Computer Science from UNINORTE – Laureate International, completed in 2018.
Tech stack
Software and tools used professionally
Availability
Location
BrazilAuthorized to work in
Social media
Job categories
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