Mark Tozzi
Baltimore, Maryland, United States
Summary
🤩
RockstarMark Tozzi is a Senior Software Engineer with 14 years of experience specializing in data warehousing, ETL, and big data analytics, currently driving backend work at Elastic. He focuses on transforming vast web data into query-able assets feeding BI systems and has deep hands-on expertise with Hadoop, MapReduce, Hive, and Perl. At Elastic he contributes to the widely used open-source Elasticsearch project, improving aggregation performance and adding advanced field and date-nanos support. Known for pragmatic problem solving, he bridges large-scale data engineering with production-grade search infrastructure. Based in Baltimore, he brings both legacy ETL discipline and modern distributed systems practice to complex data challenges.
14 years of coding experience
Stackoverflow
10,583reputation
1.0mreached
53answers
10questions
hadoop
top-5%
Github Skills (23)
amazon-elasticsearch10
java10
javas10
elasticsearchquery10
aws-elasticsearch10
elasticsearch10
elasticsearch-api10
hadoop9
testing9
data-structure9
algorithm9
algorithms9
datastructures-algorithms9
data-structures9
trending6
Programming languages (7)
Github contributions (5)
elastic/elasticsearch
Aug 2018 - Nov 2022
Free and Open Source, Distributed, RESTful Search Engine
Role in this project:
Back-end Developer
Back-end DeveloperContributions:736 reviews, 149 commits, 752 PRs in 4 years 3 months
Contributions summary:Mark's commits primarily involve the development and maintenance of the Elasticsearch search engine, as evidenced by their contributions to several core areas. These include implementing features such as missing value validation for aggregations, supporting new functionality for range fields in histogram and date histogram aggregations, refactoring values source behavior, and adding support for the use of date nanos as a data type. These changes indicate an understanding of how to improve the aggregation engine's performance.
restrestfulsearch-engineelasticsearchjava
not-napoleon/mazes
May 2015 - Aug 2022
Contributions:8 pushes, 2 branches in 7 years 4 months
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