André Marllus - CTO at Nefex

André Marllus

CTO at Nefex

São Paulo, Brazil

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Summary

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Senior

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Top School

André Marllus is a seasoned CTO and software architect with over a decade of experience designing cloud-native, high-availability systems for payments, banking and fintechs. He combines hands-on expertise in Java, Node.js, Kubernetes and AWS with strong leadership—having built and mentored architecture teams and led full lifecycle delivery from tech strategy to production. His work includes replacing legacy payment authorizers with scalable low-latency platforms and driving FinOps to reduce cloud costs while improving resilience and observability. Comfortable with event-driven and microservices patterns (Kafka, gRPC, SQS) and hexagonal design, he ties architectural choices directly to business outcomes and KPIs. Based in São Paulo, he has repeatedly moved from hands-on tech lead roles to executive CTO positions, proving an ability to scale both systems and engineering organizations. An uncommon strength is blending deep operational focus (monitoring, caching, cost optimization) with people development to sustain long-term engineering health.

10 years of coding experience

16 years of employment as a software developer

Bacharelado em Sistemas de Informação, Bacharelado em Sistemas de Informação at Faculdades Integradas de Patos

POS Graduação Desenvolvimento Web, Tecnologia da Informação, POS Graduação Desenvolvimento Web, Tecnologia da Informação at Centro Universitário de João Pessoa

Stackoverflow

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Github Skills (4)

session-replication6

session-manager4

tomcat3

redis2

Programming languages (1)

Java

Github contributions (5)

andremarllus/PosWeb

Nov 2016 - Dec 2019

Contributions:2 PRs, 6 pushes, 2 branches in 3 years 1 month

marketpayconductor/desafio-mobile

Jul 2018 - Feb 2019

Contributions:7 commits, 1 PR, 6 pushes in 7 months

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