Nadav Har'el
Distinguished Engineer at ScyllaDB
Misgav Regional Council, North District, Israel
Summary
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Rockstar🎓
Top SchoolNadav Har'el is a Distinguished Engineer with 16+ years building high-performance distributed systems, currently leading core development at ScyllaDB and cofounding the long-running Hspell project. He combines deep academic rigor—a summa cum laude BA and a 97.4 GPA MSc in applied mathematics from Technion—with hands-on experience across research (IBM Research), networking (Radware), and product startups. Nadav contributes to prominent open-source work on ScyllaDB’s Alternator (DynamoDB-compatible) subsystem, adding precision fixes, schema changes and unit tests that improve correctness in a production-grade NoSQL datastore. Known for bridging research-grade theory and pragmatic engineering, he has a track record of shipping reliable backend solutions and shaping community tools over decades. Based in the Misgav region of Israel, he brings uncommon breadth—from systems design to founding and editing online services—paired with meticulous attention to correctness.
15 years of coding experience
22 years of employment as a software developer
BA, Mathematics, Summa Cum Laude (95.7 GPA), BA, Mathematics, Summa Cum Laude (95.7 GPA) at Technion - Israel Institute of Technology
English, Hebrew, French
Stackoverflow
12,772reputation
756kreached
359answers
7questions
amazon-web-services
top-1%
cassandra
top-1%
amazon-dynamodb
top-1%
nosql
top-5%
aws-lambda
top-5%
database
top-5%
Github Skills (20)
c-language10
cassandra10
amazon-web-services10
amazon-dynamodb10
cprogramming-language10
testing9
nosql9
boto9
aws-lambda9
dynamodb9
attribute9
database9
databases8
nodejs6
signed6
Programming languages (15)
Github contributions (5)
scylladb/scylladb
Dec 2014 - Jan 2023
NoSQL data store using the Seastar framework, compatible with Apache Cassandra and Amazon DynamoDB
Role in this project:
Back-end Developer
Back-end DeveloperContributions:3874 reviews, 1757 commits, 508 PRs in 8 years 2 months
Contributions summary:Nadav made contributions focused on enhancing the Alternator project's functionality related to DynamoDB, specifically addressing issues with precision and handling. Their work involved implementing unit tests to validate the correctness of the implemented functionality. They also contributed to the schema modifications.
cppnosqlseastarcassandrasql
nyh/alternator-load-balancing
Sep 2020 - Mar 2025
Various tricks, scripts, and libraries, for load balancing multiple Alternator nodes
Contributions:18 pushes, 7 branches in 4 years 6 months
tricksnodesload-balancing
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