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Maciej Obuchowski

PROFILE

Maciej Obuchowski

Over 19 months, contributed to OpenLineage/OpenLineage and potiuk/airflow by engineering robust data lineage, observability, and release automation features. Developed and enhanced integrations for Spark, dbt, and Airflow, focusing on metadata enrichment, event tracking, and compatibility across evolving runtimes. Leveraged Python, Java, and Rust to implement asynchronous transports, structured logging, and build automation, while modernizing CI/CD pipelines and dependency management. Addressed edge cases in distributed systems, improved test reliability, and maintained comprehensive documentation. The work enabled more accurate lineage tracking, streamlined deployments, and improved developer experience, supporting data quality and governance across complex data engineering workflows and releases.

Overall Statistics

Feature vs Bugs

75%Features

Repository Contributions

207Total
Bugs
30
Commits
207
Features
91
Lines of code
107,533
Activity Months19

Work History

April 2026

10 Commits • 6 Features

Apr 1, 2026

April 2026 performance summary: Delivered measurable improvements across OpenLineage and Airflow workflows, focusing on test data fidelity, CI reliability, and developer productivity. Key features shipped include TestRunFacet emission across dbt integration, dynamic CodeQL language detection to resolve SARIF conflicts, and a Go client with dbt integration enhancements. Stability improvements reduced flaky tests and race conditions in data parsing and task scheduling, while documentation and release notes communicated the value to stakeholders.

March 2026

10 Commits • 5 Features

Mar 1, 2026

March 2026 monthly summary for OpenLineage and DataDog/integrations-core: delivered high-value features, fixed critical issues, and strengthened observability, reliability, and governance. The month focused on performance optimization, data quality, and CI/ops improvements that drive business value through faster data pipelines, more trustworthy lineage, and clearer governance.

February 2026

4 Commits • 3 Features

Feb 1, 2026

February 2026 — OpenLineage: delivered cross-platform lineage tracking, robustness, and performance improvements for Spark, Databricks, and Flink integration. The month focused on delivering key features, hardening resilience against edge cases, and improving runtime performance and maintainability across the stack.

January 2026

8 Commits • 5 Features

Jan 1, 2026

January 2026: Delivered key OpenLineage improvements enabling multi-region data workflows, enhanced Spark configuration, and more reliable CI/build processes. Strengthened data quality controls with severity levels and dbt-test integration. Fixed critical parsing issues in dbt integration and advanced lineage capabilities in the 1.43.0 release (Iceberg lineage support). Demonstrated strong unit testing, code quality, and cross-repo collaboration, driving reliability and business value across data pipelines.

December 2025

6 Commits • 2 Features

Dec 1, 2025

December 2025: Focused on stability, debugging enhancements, and release hygiene for OpenLineage/OpenLineage. Delivered targeted fixes to UUID handling in NameNormalizer to prevent Spark run ID misnormalization, introduced a JSON-based execution plan debugging flag with improved exception logging for clearer diagnostics, and strengthened the build/test infrastructure with automated test build config improvements and version synchronization across Cargo.toml files for consistent releases. Impact includes fewer runtime errors, faster triage with clearer diagnostics, and more reliable CI/CD pipelines.

November 2025

21 Commits • 9 Features

Nov 1, 2025

November 2025: OpenLineage delivered meaningful improvements across core release engineering, data facet specification, and platform stability. The team focused on upgrading dependencies, enriching the data model, improving release tooling, and expanding dbt integration, all while enhancing documentation and deployment reliability.

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.

October 2024

3 Commits • 3 Features

Oct 1, 2024

October 2024 performance highlights across Flipboard/airflow and OpenLineage/OpenLineage focused on dependency cleanup, CI/CD stabilization, and metadata enrichment to improve reliability, maintainability, and data lineage accuracy. Delivered cross-repo features that reduce technical debt, improve compatibility with modern runtimes, and strengthen data lineage metadata. Key outcomes include removing an unused SQLAlchemy-related dependency in the Amazon provider and updating the Redshift hook to use the PostgreSQL connector for compatibility with newer SQLAlchemy versions; stabilizing the Spark release CI/CD pipeline by migrating to a machine executor, standardizing Java version via a common method, and using JAVA17_HOME for Gradle commands; and enriching OpenLineage dbt integration with JobTypeJobFacet to standardize metadata reporting for models, tests, and snapshots.

Activity

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Quality Metrics

Correctness93.6%
Maintainability91.0%
Architecture90.6%
Performance87.4%
AI Usage21.8%

Skills & Technologies

Programming Languages

BashCSSDockerfileGoGradleGroovyINIJSONJavaJavaScript

Technical Skills

API DesignAPI DevelopmentAPI IntegrationAPI developmentAPI integrationAWSAgent DevelopmentAirflowAlgorithm OptimizationApache SparkAsync ProgrammingAsynchronous ProcessingAsyncioBackend DevelopmentBigQuery integration

Repositories Contributed To

8 repos

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

OpenLineage/OpenLineage

Oct 2024 Apr 2026
19 Months active

Languages Used

PythonYAMLGradleINIJavaMarkdownRustShell

Technical Skills

Build AutomationCI/CDData EngineeringDevOpsOpenLineagedbt Integration

potiuk/airflow

Nov 2024 Apr 2026
10 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

Flipboard/airflow

Oct 2024 Oct 2024
1 Month active

Languages Used

PythonYAML

Technical Skills

CI/CDDatabase IntegrationDependency ManagementPython Development

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

DataDog/integrations-core

Mar 2026 Mar 2026
1 Month active

Languages Used

Python

Technical Skills

API integrationDevOpsbackend developmentdatabase managementunit testing