Adam Kotwasinski
Principal Software Development Engineer at Open Source
San Francisco Bay Area United States
Summary
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Rockstar🎓
Top SchoolAdam Kotwasinski is a Principal Software Development Engineer based in the San Francisco Bay Area with 8 years of experience designing resilient, high-performance distributed systems and messaging platforms. He leads engineering efforts around Kafka and RabbitMQ at Workday, creating client libraries, operational sidecars, and deployment processes that prioritize fail-secure behavior and operator ergonomics. Adam is an active open-source maintainer for Envoy’s Kafka filter, where he implemented protocol parsers and optimized Kafka codec performance for a widely used cloud-native proxy. Comfortable across lower-level C/C++ details up through JVM-based services, he blends systems-level instincts with strong software craftsmanship and careful domain modeling. He has a track record of turning non-standard scale problems into pragmatic, production-ready solutions—often by building tooling and processes that lift team productivity. Educated at the University of Warsaw, he frequently bridges open-source innovation with enterprise-grade reliability.
8 years of coding experience
6 years of employment as a software developer
Master of Science (MSc) Informatyka, Master of Science (MSc) Informatyka at University of Warsaw
Polish, English, German
Stackoverflow
4,524reputation
287kreached
167answers
15questions
apache-kafka
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inheritance
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java
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package
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Github Skills (19)
serializable10
c-language10
serializer10
kafka10
serialization10
deserialization10
cprogramming-language10
envoyproxy9
env9
java9
inheritance9
package9
convoy9
apache-kafka9
slf4j6
Programming languages (4)
Github contributions (5)
envoyproxy/envoy
May 2019 - Dec 2022
Cloud-native high-performance edge/middle/service proxy
Role in this project:
Back-end Developer
Back-end DeveloperContributions:23 reviews, 50 commits, 69 PRs in 3 years 8 months
Contributions summary:Adam Kotwasinski primarily contributed to the Kafka codec within the Envoy project, focusing on improving the performance and functionality of the Kafka integration. His work involved implementing and refactoring Kafka deserializers, optimising serialization processes to reduce unnecessary data copies, and enabling support for new Kafka protocol features. He also implemented the response encoder and decoder for the Kafka codec, adding support for different request and response types within the filter.
nanoservicesmore-catsgolangcontainersproxy
adamkotwasinski/envoy
Oct 2018 - Nov 2024
C++ front/service proxy
Contributions:112 PRs, 1483 pushes, 324 branches in 6 years 2 months
cppservice-proxyproxy
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