Aj Nadel
Software Engineer, Digital Services at Metropolitan Transportation Authority
New York, New York, United States
Summary
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RockstarAj Nadel is a Software Engineer with 11 years of experience, currently building digital services for the Metropolitan Transportation Authority in New York. He specializes in backend engineering and has contributed to notable open-source infrastructure like Dagster, where he improved GraphQL error handling, execution parameter validation, and added PostgreSQL test contexts. Comfortable operating in complex, production-focused environments, Aj brings a pragmatic approach to making systems more observable and resilient. Colleagues rely on him for careful refactoring that reduces ambiguity in APIs and for smoothing upgrades across modular codebases. Notably, his work balances hands-on bug fixes with thoughtful testability improvements that pay dividends in large-scale orchestration platforms.
11 years of coding experience
English, Spanish, Portuguese, Hebrew, Yiddish
Github Skills (15)
graphql10
dagster10
orchestration10
api10
orchestra10
python10
apidoc10
wordpress-graphql10
wpgraphql10
testing10
data-pipelines9
data-engineering9
data-pipeline9
workflow-engine9
postgresql8
Programming languages (7)
Github contributions (5)
dagster-io/dagster
Jun 2020 - Sep 2020
An orchestration platform for the development, production, and observation of data assets.
Role in this project:
Backend Developer
Backend DeveloperContributions:2 releases, 32 commits, 2 PRs in 2 months
Contributions summary:Aj primarily focused on backend development within the Dagster orchestration platform. Their work involved refactoring error handling within the GraphQL API to return specific error types. They also modified the execution parameters checks to return GraphQL errors. Furthermore, the user contributed to version updates across various Dagster modules and integrated a PostgreSQL context variant for testing within the GraphQL framework.
operationpythonobservationschedulermetadata
ajnadel/ajnadel.github.io
Oct 2015 - Jan 2025
Contributions:16 pushes, 1 branch in 9 years 4 months
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