William Kreuch
Senior Software Engineer III at Objective
Santa Catarina, Brazil
Summary
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Senior🎓
Top SchoolWilliam Kreuch is a Senior Software Engineer III based in Santa Catarina, Brazil, with 7–8 years building resilient healthcare and financial systems using Java, Spring Boot, Spring Cloud, PL/SQL and JavaScript. He led migration of a legacy monolith to microservices using DDD, service discovery, config/gateway servers and Resilience4j, and delivered cross-border invoicing APIs for Brazil, Mexico and Colombia while supporting LatAm and Australia markets. William combines backend expertise (REST, Hibernate/JPA, Oracle/Postgres) with security and compliance work—implementing LGPD data minimization and Spring Security with JWT—resulting in measurable performance gains. He also applies TDD, CI practices and coordinated a 15-developer team, balancing hands-on coding with architecture and code review. A pragmatic problem-solver, he’s equally comfortable tuning complex PL/SQL routines as designing API contracts that drive frontend-to-backend integrations.
7 years of coding experience
7 years of employment as a software developer
Estácio de Sá University
English, PortugueseProgramming languages (1)
Github contributions (5)
wkreuch/dsdeliver-sds2
Jan 2021 - Jan 2021
Contributions:24 commits, 18 pushes, 1 branch in 10 days
wkreuch/BlueTasks
Nov 2020 - Nov 2022
Contributions:3 pushes in 2 years
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