Dionysios Logothetis
Engineering Manager at Snowflake
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolDionysios Logothetis is an engineering manager with 12+ years building and scaling large data platforms, currently leading teams at Snowflake after managing Spark and graph-analytics engineering at Meta. He holds a PhD in Computer Science from UC San Diego and brings deep expertise in large-scale data management, distributed systems, and cloud computing cultivated through roles at Telefonica Research and internships on the Windows Azure team. At Meta he drove core engine scalability, reliability, and programming abstractions for ML/AI workloads powering Ads, Instagram and privacy use cases. His open-source contributions include substantive backend work on Apache Giraph to enable multi-mapping input formats for large graph processing pipelines. Colleagues describe him as a technical leader who blends research rigor with production-first engineering and a knack for translating academic insights into operational, cost-efficient platforms. Based in San Francisco, he pairs long-term systems thinking with hands-on delivery across complex, mission-critical infrastructure.
12 years of coding experience
8 years of employment as a software developer
University of California, San DiegoDiploma, Electrical and Computer Engineering, Diploma, Electrical and Computer Engineering at National Technical University of Athens
Github Skills (4)
java10
javas10
giraph10
big-data10
Programming languages (1)
Github contributions (5)
apache/giraph
Mar 2015 - Jan 2021
Mirror of Apache Giraph
Role in this project:
Back-end Developer
Back-end DeveloperContributions:12 reviews, 49 commits, 57 PRs in 5 years 10 months
Contributions summary:Dionysios's primary contribution focuses on implementing features related to multi-mapping input formats within the Apache Giraph framework. This involved the addition of classes like `MultiMappingInputFormat` and `MappingInputFormatDescription`, along with modifications to configuration-related classes. The changes aimed to support reading data from multiple sources using different input formats, as demonstrated by the provided code differences and commit messages. These changes are core to the functionality of a graph processing framework.
javagiraphapachebig-data
dlogothetis/giraph
Dec 2016 - Jan 2021
Mirror of Apache Giraph
Contributions:50 pushes, 79 branches in 4 years 1 month
javagiraphapache
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