Paulo Casaes E Silva
Senior Staff Software Engineer at Zwift
Huntington Beach, California, United States
Summary
👤
Senior🎓
Top SchoolPaulo Casaes E Silva is a Senior Staff Software Engineer with over a decade of experience building scalable back-end systems in Java and leading teams through architecture and delivery. He has deep expertise in event-driven platforms and Kafka—demonstrated by significant contributions to SmallRye Reactive Messaging and Quarkus—and has driven Zwift’s migration toward an event-driven architecture. Comfortable across the full stack, he pairs twelve years of front-end work in Angular and plain JavaScript with systems-level improvements like gRPC and Vert.x tuning. A tech polymath, he studies audio synthesis in Pure Data/C and explores game development in Unity and Godot outside of work, which informs his pragmatic, performance-conscious approach. Based in Huntington Beach, he blends hands-on coding, open-source impact, and technical leadership to solve complex distributed-systems challenges.
11 years of coding experience
16 years of employment as a software developer
Bachelor's degree, Computer Science Major and Minor in Math and Music., Bachelor's degree, Computer Science Major and Minor in Math and Music. at Macalester College
English, Portuguese
Github Skills (16)
javas10
kafka10
vertx10
messaging10
microprofile10
reactive10
micrometer10
kafka-streams10
quarkus10
java10
grpc10
junit8
unit-test8
cloud-native8
kubernetes-pods7
Programming languages (6)
Github contributions (5)
smallrye/smallrye-reactive-messaging
Jun 2020 - Sep 2021
SmallRye Reactive Messaging
Role in this project:
Back-end Developer
Back-end DeveloperContributions:55 reviews, 16 commits, 15 PRs in 1 year 3 months
Contributions summary:Paulo primarily focused on enhancing the Kafka integration within the SmallRye Reactive Messaging framework. Their contributions include implementing support for Kafka's ConsumerRebalanceListener, improving commit strategies, and addressing issues related to partition handling and message processing. The user also added features such as memoizing KafkaSink retries and improving the health check for the throttled commit strategy. These changes demonstrate expertise in building and refining the Kafka connector for reactive messaging.
smallryemicroprofilemessagingkafkareactive
quarkusio/quarkus
Jan 2020 - Nov 2022
Quarkus: Supersonic Subatomic Java.
Role in this project:Back-end Developer
Back-end DeveloperContributions:6 reviews, 11 commits, 13 PRs in 2 years 10 months
Contributions summary:Paulo primarily focused on enhancing the Quarkus framework by adding features and improving existing functionalities. Their contributions include adding runtime metrics for process uptime and start time using Micrometer, configuring HTTP settings for maximum initial line length and chunk size in the Vert.x HTTP extension, and instantiating KafkaStreams in the producer method for the Kafka Streams extension. They also improved gRPC server performance and handled client close/cancel events in gRPC Mutiny streaming services.
kubernetesquarkusjavareactivecloud-native
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