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Maciej Obuchowski

PROFILE

Maciej Obuchowski

Maciej Obuchowski developed and maintained robust data lineage and observability features across the OpenLineage/OpenLineage and potiuk/airflow repositories, focusing on end-to-end integration between Airflow, Spark, and dbt. He engineered enhancements such as asynchronous transport in Python, advanced tagging and metadata facets, and resilient event handling to improve lineage accuracy and system reliability. Leveraging Python, Java, and Rust, Maciej modernized build systems, streamlined CI/CD pipelines, and introduced new developer tooling for artifact comparison and diagnostics. His work demonstrated depth in backend development, configuration management, and release governance, resulting in more reliable deployments and clearer lineage for data engineering teams.

Overall Statistics

Feature vs Bugs

81%Features

Repository Contributions

145Total
Bugs
14
Commits
145
Features
58
Lines of code
33,617
Activity Months12

Work History

October 2025

6 Commits • 4 Features

Oct 1, 2025

October 2025 monthly summary for OpenLineage/OpenLineage focusing on key features and bug fixes, with business impact and technologies demonstrated.

September 2025

5 Commits • 3 Features

Sep 1, 2025

September 2025 monthly summary for OpenLineage OpenLineage focused on DBT integration improvements that enhance lineage visibility, reduce log noise, and improve governance. Implemented metadata enrichment for DBT runs, broader tagging, and dataset naming improvements, with accompanying tests to ensure configuration correctness. These changes deliver clearer lineage, faster debugging, and better operational insight for data teams, while maintaining performance and compatibility.

August 2025

6 Commits • 3 Features

Aug 1, 2025

August 2025: Stability improvements, feature enhancements, and enhanced data lineage across OpenLineage and Airflow. Implemented build stability for Rust 1.89.0, added observability and configurability via Datadog transport, enabled granular dbt job naming, and extended Airflow lineage with per-task durations. These efforts improved release reliability, data quality, and operational insight, supported by targeted tests and up-to-date release documentation.

July 2025

16 Commits • 6 Features

Jul 1, 2025

July 2025: Delivered notable performance, reliability, and tooling improvements across OpenLineage and DataDog, driving throughput, observability, and release stability. Implemented asynchronous transport for Python OpenLineage, optimized Java client threading and executors, strengthened dbt integration with integrity checks and structured logging, expanded test coverage and CI resilience, introduced a JAR comparison tool, refreshed dependencies/builds for stability, and updated release notes for major versions. These changes collectively reduce time-to-diagnose issues, accelerate deployments, and improve overall product stability and developer experience.

June 2025

10 Commits • 5 Features

Jun 1, 2025

June 2025 performance summary across OpenLineage and related repositories, focused on robustness, observability, and CI/build quality. Delivered a release-aligned set of improvements, removed legacy components, and advanced data lineage observability through enhanced Dbt integration and Airflow-facing docs. The work emphasizes business value through reduced runtime errors, clearer lineage data, stable release processes, and stronger developer experience.

May 2025

9 Commits • 4 Features

May 1, 2025

May 2025 performance summary focusing on business value and technical achievements across three repos. Delivered robust deployment improvements, richer data lineage, and enhanced release governance to accelerate pipeline reliability and auditability. Key achievements delivered this month: - dd-trace-java: Robust JVM detection in setup by validating JAVA_HOME and, if unset, auto-detecting a Java 1.8 installation from the system PATH, improving install reliability and user experience. - Airflow (potiuk/airflow): OpenLineage root lineage tracking enhancements, including root parent information in events and exposure of lineage_root_* macros in the Airflow plugin for complete root-to-leaf lineage visibility and access to root run/parent IDs. - OpenLineage: CatalogDatasetFacet support added to the client library and Spark integration, including facet information for Iceberg, Delta, and JDBC catalogs, with accompanying tests and build script updates. - Documentation: Release notes and changelog updates across multiple releases (1.29.0–1.31.0, 1.32.1, 1.33.0) to improve release governance and project visibility.

April 2025

14 Commits • 7 Features

Apr 1, 2025

April 2025 performance summary focused on delivering end-to-end data lineage, strengthening observability, and stabilizing the tech stack across multiple repos. Key features were shipped to enable lineage collection, enhance Spark/OpenLineage integration, and improve governance metadata. Observability and debugging were improved through enhanced logging and robust event handling. The month also included important environment upgrades and release notes updates to support reliability and governance.

March 2025

15 Commits • 4 Features

Mar 1, 2025

March 2025: Delivered targeted OpenLineage enhancements and stability fixes across the OpenLineage project, Datadog agent integration, and Airflow components. Key outcomes include: (1) Tag Facet Documentation clarifying usage across dataset, job, and run contexts; (2) new OpenLineage data intake proxy endpoint for the Datadog Agent enabling end-to-end lineage ingestion; (3) expanded Spark/OpenLineage transport support with serialization of multiple HTTP transports and configuration injections; (4) strengthened runtime resilience for Java 17 add-opens scenarios to prevent crashes; (5) release management and changelog/versioning improvements to streamline packaging and version validation. These efforts increase data lineage reliability, improve observability, and accelerate feature adoption while reducing operational risk across environments.

February 2025

12 Commits • 6 Features

Feb 1, 2025

February 2025 monthly summary focused on delivering cross-repo lineage and platform upgrades, with targeted improvements to OpenLineage tagging, release readiness across multiple versions, Airflow 3 listener modernization, and test infrastructure enhancements. This period solidified business value by enabling more accurate lineage, reducing release risk, and increasing test reliability across Java, Python, Spark, Flink, and dbt integrations.

January 2025

11 Commits • 5 Features

Jan 1, 2025

January 2025: Delivered stability, observability, and release-readiness enhancements across potiuk/airflow and OpenLineage/OpenLineage. The work focused on robust callback processing, richer event data, and resource controls, enabling more reliable production runs, faster issue diagnosis, and smoother downstream integration. Documentation and release tooling improvements further supported upcoming releases and cross-team collaboration.

December 2024

19 Commits • 7 Features

Dec 1, 2024

December 2024 monthly summary focusing on key accomplishments and impact across two main repositories: potiuk/airflow and OpenLineage/OpenLineage. Highlights include stabilization of OpenLineage integration tests, improved run id traceability, broader dbt integration, streaming content initiatives, and platform/tooling enhancements that enabled faster releases and better observability.

November 2024

22 Commits • 4 Features

Nov 1, 2024

November 2024 monthly summary focused on strengthening data lineage reliability and release readiness across Airflow/OpenLineage components. Key work delivered enhances lineage accuracy, cross-version compatibility, and developer experience through documentation, modular transports, and CI improvements. Business value includes improved observability, reduced maintenance risk, and faster deployment of Spark/OpenLineage integrations.

Activity

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Quality Metrics

Correctness92.8%
Maintainability91.8%
Architecture90.4%
Performance86.6%
AI Usage20.0%

Skills & Technologies

Programming Languages

BashDockerfileGoGradleGroovyINIJavaKotlinMakefileMarkdown

Technical Skills

API DesignAPI DevelopmentAPI IntegrationAWSAgent DevelopmentAirflowApache SparkAsync ProgrammingAsynchronous ProcessingAsyncioBackend DevelopmentBuild AutomationBuild ConfigurationBuild ManagementBuild Scripting

Repositories Contributed To

6 repos

Overview of all repositories you've contributed to across your timeline

OpenLineage/OpenLineage

Nov 2024 Oct 2025
12 Months active

Languages Used

GradleINIJavaMarkdownPythonRustShellTOML

Technical Skills

API DesignBuild AutomationBuild ManagementCI/CDCode RefactoringConfiguration Management

potiuk/airflow

Nov 2024 Aug 2025
9 Months active

Languages Used

PythonTOMLN/A

Technical Skills

AirflowData EngineeringData ObservabilityOpenLineagePlugin DevelopmentProvider Development

DataDog/dd-trace-java

Apr 2025 Jul 2025
3 Months active

Languages Used

GroovyJavaShell

Technical Skills

Agent DevelopmentDistributed TracingGroovy DevelopmentInstrumentationJava DevelopmentOpenLineage

DataDog/datadog-agent

Mar 2025 Mar 2025
1 Month active

Languages Used

Go

Technical Skills

API DevelopmentBackend DevelopmentConfiguration ManagementProxy Implementation

DataDog/system-tests

Apr 2025 Apr 2025
1 Month active

Languages Used

No languages

Technical Skills

No skills

DataDog/documentation

Jun 2025 Jun 2025
1 Month active

Languages Used

MarkdownPythonShell

Technical Skills

AirflowData EngineeringObservabilityOpenLineagedbt

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