André Cristiani
Senior Java Software Engineer at Invillia
São Paulo, Brazil
Summary
👤
Senior🎓
Top SchoolAndré Cristiani is a Senior Java Software Engineer based in São Paulo with eight years of experience and a six-year focus on backend systems, the last five spent deeply embedded in card receivables and payment-anticipation domains. He designs and operates resilient, high-performance microservices using Java/Kotlin, Kafka, Spark and AWS, and brings strong test automation and observability practices into production. His background includes a master's in computer science with machine learning research, which he leverages to solve complex data and reliability challenges in financial systems. Comfortable across the stack from databases like Cassandra and Oracle to Kubernetes and CI/CD pipelines, he is known for integrating payments with registradoras and cessão workflows at scale. A practical problem-solver, he mixes research-driven thinking with production-hardened engineering to reduce friction in mission-critical payment flows.
9 years of coding experience
3 years of employment as a software developer
Técnico em Informática, Algoritmos e programação de computadores, Técnico, Técnico em Informática, Algoritmos e programação de computadores, Técnico at Etec Dr. Adail Nunes da SilvaMaster's degree, Computer Science, Master's degree, Computer Science at Universidade Federal de São CarlosInstituto Federal de Educação, Ciência e Tecnologia de São Paulo
English, Portuguese
Stackoverflow
361reputation
46kreached
1answer
9questions
Github Skills (16)
magento8
type-conversion6
aggregation-framework6
javafx6
aggregate6
geometry6
java6
fuzzy-logic3
rio2
downgrade2
data-stream2
tarantool2
javascript1
novelty-detection1
api1
Programming languages (5)
Github contributions (5)
andrecristiani/FuzzCND
Dec 2019 - Jun 2020
This is an approach for novelty detection on data streams using fuzzy logic
Contributions:1 release, 16 PRs, 54 pushes in 5 months
data-streamfuzzy-logicnovelty-detection
andrecristiani/spring-boot-microservices
Jun 2020 - Jun 2024
Contributions:1 push, 1 branch in 3 years 11 months
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