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David Grieve

PROFILE

David Grieve

Contributed to openrewrite/rewrite and related repositories by building data transformation features for YAML and JSON, enhancing automation safety and configuration workflows. Leveraged Java and YAML to implement configurable CopyValue operations, enabling precise key copying and robust handling of edge cases. Improved migration reliability in openrewrite/rewrite-migrate-java by refining dependency management and semantic versioning, ensuring stability during artifact transitions. Applied code refactoring and unit testing skills to fix syntax issues in Java expressions and streamline test frameworks, including Mockito and JUnit integrations. Focused on maintainable, backward-compatible solutions that reduce manual errors and support cleaner, more reliable backend and testing processes.

Overall Statistics

Feature vs Bugs

63%Features

Repository Contributions

9Total
Bugs
3
Commits
9
Features
5
Lines of code
1,346
Activity Months3

Work History

February 2026

2 Commits • 1 Features

Feb 1, 2026

February 2026: Key contributions across openrewrite/rewrite and openrewrite/rewrite-testing-frameworks. Fixed unary operator precedence in method invocations and extended test coverage; improved test framework cleanliness by removing openMocks traces for specific JUnit runners; implemented lifecycle cleanup patterns; demonstrated strong code rewriting, testing, and collaboration that reduces syntax errors and boilerplate, delivering maintainable transformations.

January 2026

5 Commits • 2 Features

Jan 1, 2026

January 2026 monthly performance summary for openrewrite repositories, focusing on migration reliability, YAML processing, and versioning resilience. Key work spanned two repos with a mix of forward delivery and risk mitigation, emphasizing business value through stability and faster migration cycles.

December 2025

2 Commits • 2 Features

Dec 1, 2025

December 2025 monthly summary for openrewrite/rewrite focusing on delivering data transformation capabilities and increasing automation safety. This period highlights new configurable CopyValue features for YAML and JSON, together with strengthened test coverage and backward-compatible design to reduce maintenance risk and accelerate configuration automation across YAML/JSON workflows.

Activity

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Quality Metrics

Correctness95.6%
Maintainability82.2%
Architecture82.2%
Performance82.2%
AI Usage35.6%

Skills & Technologies

Programming Languages

JavaYAML

Technical Skills

Code RefactoringDependency ManagementJSON ManipulationJUnitJavaJava developmentMockitoTestingUnit TestingUnit testingYAML ConfigurationYAML ManipulationYAML processingbackend developmentsoftware testing

Repositories Contributed To

3 repos

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

openrewrite/rewrite

Dec 2025 Feb 2026
3 Months active

Languages Used

Java

Technical Skills

JSON ManipulationJavaUnit TestingYAML ManipulationJava developmentUnit testing

openrewrite/rewrite-migrate-java

Jan 2026 Jan 2026
1 Month active

Languages Used

JavaYAML

Technical Skills

Dependency ManagementJavaTestingUnit TestingYAML Configuration

openrewrite/rewrite-testing-frameworks

Feb 2026 Feb 2026
1 Month active

Languages Used

Java

Technical Skills

JUnitJavaMockito