Guilherme Kessa
Project Leader at Mercado Livre
São Paulo, Brazil
Summary
👤
Senior🎓
Top SchoolGuilherme Kessa is a senior software engineer and project leader with over a decade of experience building cloud-native, high-availability systems across Brazil’s largest fintechs and publishers. He has led multi-squad organizations (up to 35 engineers), drove a microservices migration that cut costs ~25% while achieving 99.99% SLA, and introduced observability and SLO-driven practices that slashed critical incidents by 80%. Guilherme combines hands-on Java/Spring and Kubernetes expertise with practical AI generative automation (AWS Bedrock) that reduced document-analysis time by 93% and improved digital onboarding conversion by 30%. A former founder who closed commercial deals for his startup, he brings a rare product-and-business sensibility to technical leadership, mentoring talent and accelerating internal promotions through structured PDIs. Based in São Paulo, he excels at aligning technology, people and compliance requirements (BACEN/LGPD) to deliver measurable business impact.
9 years of coding experience
12 years of employment as a software developer
Graduação, Análise e Desenvolvimento de Sistemas, Graduação, Análise e Desenvolvimento de Sistemas at CesumarPós Graduação, Desenvolvimento Orientado a Objetos em Java, Pós Graduação, Desenvolvimento Orientado a Objetos em Java at UnicesumarTech Manager 5.0: liderança e gestão na prática, Information Technology, Tech Manager 5.0: liderança e gestão na prática, Information Technology at Strides Tech Community
Github Skills (19)
slack-bot9
slack-webhooks9
slash-commands8
facebook7
api6
spring-boot6
java6
conversation6
api-client6
bot-framework5
slack5
bots5
chatbot3
jsf2
charts1
Programming languages (1)
Github contributions (4)
guikessa/mscapp
Jul 2017 - Jul 2017
Contributions:1 push, 1 branch in 1 day
AnyMarket/anymarket-sdk-java
Oct 2017 - Dec 2017
ANYMARKET API client for Java
Contributions:7 commits, 4 pushes, 3 branches in 1 month
api-clientjavaapi
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