Stavros Kontopoulos
Senior Staff Software Engineer at Automation Anywhere
Greece
Summary
🤩
Rockstar🎓
Top SchoolStavros Kontopoulos is a Senior Staff Software Engineer with 11+ years of experience building cloud-native, distributed systems and data platforms using Go, Scala, Java, Python and C/C++. He blends deep academic roots in distributed data structures and big data with hands-on work on high-profile OSS projects like Apache Spark and the Knative family, where he improved observability, metrics and serverless/eventing behavior. At companies from Lightbend to Red Hat and Aisera he drove platform-level features for Kubernetes-based workloads, Kafka/Flink/Spark integrations and NoSQL-backed pipelines (Cassandra, MongoDB). A certified agile practitioner who spans the full software lifecycle, he also co-organizes the Athens Big Data meetup and contributes pragmatic DevOps fixes and performance optimizations to upstream projects. Notably, his open-source contributions include adding Prometheus-driven metrics and request-logging improvements to knative/pkg and enabling nuanced serverless behaviors in knative/serving, reflecting a rare mix of systems thinking and production-grade engineering.
11 years of coding experience
15 years of employment as a software developer
Msc, Computer Science, Msc, Computer Science at University of Patras
Stackoverflow
91reputation
10kreached
2answers
4questions
Github Skills (40)
mesos10
kubernetes10
spark10
observability10
testing10
cloudevents10
configuration-management10
big-data10
java10
scala10
javas10
go10
prometheus10
kubernetes-pods10
eventing10
Programming languages (18)
Github contributions (5)
knative/serving
Jun 2020 - Oct 2022
Kubernetes-based, scale-to-zero, request-driven compute
Role in this project:
Back-end Developer
Back-end DeveloperContributions:376 reviews, 27 commits, 109 PRs in 2 years 4 months
Contributions summary:Stavros contributed to the `knative/serving` repository, which is a Kubernetes-based serverless platform. The commits focused on enhancing the server's functionality by allowing the `PORT` environment variable in sidecar containers, enabling http1 full duplex, and improving the validation of volumes and configurations. These changes involved modifications to the validation logic, addition of tests, and code refactoring to support features like emptyDir volumes and init containers.
golangzerodeveloper-productivitynetworkingserverless
knative/pkg
Aug 2020 - Mar 2022
Knative common packages
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:79 reviews, 15 commits, 37 PRs in 1 year 7 months
Contributions summary:Stavros primarily focused on enhancing the observability and metrics capabilities within the Knative package. Their contributions included adding features for request logging, integrating Prometheus, and improving the reporting of metrics. They also addressed performance issues by optimizing metric recording and removing reflector metrics. Moreover, the user modified existing code related to config, metrics, and controller modules.
knativekubernetes
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