Ioannis Athanaselis
Principal Engineer at Mechanical Rock
Greece
Summary
🤩
Rockstar🎓
Top SchoolIoannis Athanaselis is a Principal Engineer with 10+ years delivering resilient, cloud-native systems and automation across telecom, SaaS, and observability domains from Greece. He blends hands-on backend and SRE experience—Kafka, Docker/Kubernetes, CI/CD and testcontainers—with leadership as a Scrum Master and architect of production-like integration testing pipelines. At Celonis he built scalable ephemeral test environments for CI, and his open-source contributions to Lenses.io’s Stream Reactor improved Kerberos support, Hive array handling and testcontainer integration for Kafka connectors. Comfortable in both development and operational roles, he routinely bridges product requirements and platform reliability, and brings a pragmatic security-aware mindset shaped by earlier work on cryptography and encrypted database layers.
10 years of coding experience
19 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at Technologiko Ekpaideutiko Idrima, AthinasMaster's degree Telecommunications Management, Master's degree Telecommunications Management at Ethnikon kai Kapodistriakon Panepistimion Athinon
English, Greek
Github Skills (16)
connectors10
javas10
hbase10
hive10
kafka10
kafka-connect10
java10
scala10
test-container9
elasticsearchquery8
elasticsearch8
elasticsearch-api8
amazon-elasticsearch8
aws-elasticsearch8
aws-s36
Programming languages (9)
Github contributions (5)
lensesio/stream-reactor
Apr 2020 - Jun 2021
A collection of open source Apache 2.0 Kafka Connector maintained by Lenses.io.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3 reviews, 42 commits, 38 PRs in 1 year 1 month
Contributions summary:Ioannis contributed to the Apache Kafka Connectors, specifically enhancing Kerberos support for the HBase Sink Connector, including debugging features. They also addressed a bug by correctly parsing Elasticsearch port configurations. Furthermore, the user implemented array support within the Hive sink connector. In addition, the user was involved in integrating StreamReactor's tests with testcontainers, which involved both source and sink connectors.
dcosdata-streamstreamskafka-connectsql-engine
johnathana/magnus4j
Sep 2016 - Dec 2017
Contributions:7 commits, 8 pushes, 3 branches in 1 year 3 months
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