equinor/ert
Nov 2024 – Jul 2025
3 Months active
Languages Used
PythonShellJinja
Technical Skills
Backend DevelopmentCI/CDPythonShell ScriptingSystem AdministrationTesting
Jon Holba
PROFILE
Jon Holba
Worked on the equinor/ert repository to enhance reliability, maintainability, and operational maturity across batch job submission and experiment workflows. Focused on backend development using Python and Shell scripting, the work included optimizing test suite performance, improving error handling, and introducing robust retry logic for schedulers like LSF, OpenPBS, and Slurm. Delivered features such as user cancellation handling with custom exceptions, strict configuration validation to prevent misconfigurations, and expanded test coverage for regression protection. Refactored code for better type safety and maintainability, removing technical debt and clarifying type annotations, which contributed to a more robust and predictable codebase.
Overall Statistics
Feature vs Bugs
80%Features
Repository Contributions
5Total
Bugs
1
Commits
5
Features
4
Lines of code
364
Activity Months3
Work History
July 2025
1 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07 focusing on code quality and robustness in the ert repository. Delivered a targeted refactor to improve code quality and type safety, reducing technical debt and laying groundwork for future enhancements to run-model constructors and error typing.
1 Commits • 1 Features
Jul 1, 2025Monthly summary for 2025-07 focusing on code quality and robustness in the ert repository. Delivered a targeted refactor to improve code quality and type safety, reducing technical debt and laying groundwork for future enhancements to run-model constructors and error typing.
July 2025
March 2025
2 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for equinor/ert focusing on reliability, validation, and operational maturity. Key features delivered include User Cancelation Handling for Experiments and Strict Design Matrix Configuration Validation. Major bugs fixed include improved termination handling with a new UserCancelled exception and clearer error messages, as well as stronger configuration validation to prevent partial GEN_KW overlaps. Overall impact: more reliable experiment execution workflows, reduced risk of misconfigurations, and improved operator productivity. Technologies/skills demonstrated include Python exception design and propagation, refactoring for clearer error paths, test-driven development with updated tests, and robust configuration validation.
March 2025
2 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for equinor/ert focusing on reliability, validation, and operational maturity. Key features delivered include User Cancelation Handling for Experiments and Strict Design Matrix Configuration Validation. Major bugs fixed include improved termination handling with a new UserCancelled exception and clearer error messages, as well as stronger configuration validation to prevent partial GEN_KW overlaps. Overall impact: more reliable experiment execution workflows, reduced risk of misconfigurations, and improved operator productivity. Technologies/skills demonstrated include Python exception design and propagation, refactoring for clearer error paths, test-driven development with updated tests, and robust configuration validation.
November 2024
2 Commits • 1 Features
Nov 1, 2024Month: 2024-11 — Focused improvements in test reliability, performance, and cross-system batch job submission for the equinor/ert repo. Delivered deterministic test runs, faster CI feedback, and more robust retry logic across major schedulers (LSF, OpenPBS, Slurm).
2 Commits • 1 Features
Nov 1, 2024Month: 2024-11 — Focused improvements in test reliability, performance, and cross-system batch job submission for the equinor/ert repo. Delivered deterministic test runs, faster CI feedback, and more robust retry logic across major schedulers (LSF, OpenPBS, Slurm).
November 2024
Activity
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Quality Metrics
Correctness86.0%
Maintainability80.0%
Architecture72.0%
Performance74.0%
AI Usage20.0%
Skills & Technologies
Programming Languages
JinjaPythonShell
Technical Skills
Asynchronous ProgrammingBackend DevelopmentCI/CDConfiguration ManagementError HandlingException ManagementPythonRefactoringShell ScriptingSystem AdministrationTestingType HintingUnit Testing
Repositories Contributed To
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