Armin Primadi
Director Founder at Dexcode
Special capital Region of Jakarta, Indonesia
Summary
🤩
Rockstar🎓
Top SchoolArmin Primadi is a Jakarta-based founder and director with 13 years of experience building full-stack web and mobile applications and leading engineering teams. He founded and runs Dexcode, delivering B2C solutions, and previously led development efforts at FacilGo where he built an integration engine, big-data pipelines with Apache Spark, and a React Native offline-capable mobile MVP. Technically fluent across backend, databases and distributed systems, he contributes to Apache DataFusion—refactoring SQL logic tests, improving parser flexibility, and adding interval support—reflecting a deep comfort with SQL engines and data infrastructure. His background includes scaling Rails architectures, optimizing performance at the infrastructure and application level, and evangelizing testing and observability practices. A UC Berkeley EECS graduate, he pairs entrepreneurial drive with hands-on engineering across the full stack and open-source ecosystems.
13 years of coding experience
8 years of employment as a software developer
Bachelor of Science, Electrical Engineering and Computer Science, Bachelor of Science, Electrical Engineering and Computer Science at University of California, BerkeleyFounder Friendly Labs
Stackoverflow
754reputation
411kreached
15answers
0questions
Github Skills (21)
testing10
fusion10
sql10
query-engine10
rust10
parserator9
parser9
data-structures8
data-structure8
arrows7
arrow-keys7
arrow-js7
graph-theory6
react6
mochajs6
Programming languages (9)
Github contributions (5)
apache/datafusion
Jul 2021 - Jul 2023
Apache DataFusion SQL Query Engine
Role in this project:
Back-end Developer
Back-end DeveloperContributions:29 reviews, 17 PRs, 59 comments in 2 years
Contributions summary:Armin primarily focused on refactoring and porting SQL logic tests to the `sqllogictests` framework within the Apache DataFusion project. Their contributions involved moving and adapting existing tests from `select.rs` and `group_by.rs` to the sqllogic framework, ensuring the functionality and correctness of the query engine. The user also addressed documentation issues and made improvements to the parser, specifically allowing for more flexible ordering of clauses in the `CREATE EXTERNAL TABLE` statements and optimizing OR chain simplification. The code changes also involve support for interval operations, specifically supporting the addition of intervals to date/timestamp values.
querypythonquery-enginedataframerust
aprimadi/dot
Sep 2020 - Oct 2022
Contributions:32 commits, 37 pushes, 1 branch in 2 years 2 months
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