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Simon Mavi Stewart

PROFILE

Simon Mavi Stewart

Over the past year, this developer focused on modernizing and stabilizing build systems for SeleniumHQ/selenium and bazel-central-registry, delivering thirteen features and resolving critical bugs. Their work centered on Bazel-based build automation, dependency management, and CI/CD reliability, with deep involvement in Java and Python development. They upgraded Bazel rules, improved Java dependency handling using BOMs, and enhanced build reproducibility and maintainability. In SeleniumHQ/selenium, they strengthened test execution and data integrity, while in bazel-central-registry, they advanced JVM dependency management and linting. Their contributions reduced technical debt, improved onboarding, and ensured smoother, more reliable builds across complex, multi-language codebases.

Overall Statistics

Feature vs Bugs

87%Features

Repository Contributions

30Total
Bugs
2
Commits
30
Features
13
Lines of code
12,575
Activity Months12

Work History

February 2026

1 Commits • 1 Features

Feb 1, 2026

February 2026 monthly summary for bazel-central-registry focused on delivering the Rules_jvm_external v6.10 integration to enhance JVM dependency management within Bazel. This work included the update to rules_jvm_external 6.10 and stabilization of dependency resolution for JVM projects (commit 0c2cca74b0f988bf315a4c17342219c1a4832e41).

January 2026

1 Commits • 1 Features

Jan 1, 2026

Month: 2026-01 — Delivered a feature upgrade to Java build rules by upgrading contrib_rules_jvm to v0.32.0 in bazel-central-registry, with updated dependencies and lint improvements. Commit reference: 42e8bfab2f38fd964d42e507a002d2dafe8d0f3d (#7247). No major bugs fixed this month; the work focused on improving maintainability, build quality, and CI signals. Impact: increased stability of central registry build rules, reduced technical debt, and clearer lint guidance for downstream users. Technologies/skills demonstrated: Java build rules, Bazel, dependency management, lint configuration, CI integration, and release management.

November 2025

1 Commits • 1 Features

Nov 1, 2025

Month: 2025-11. Delivered upgrade of Rules_jvm_external to version 6.9 in grpc/bazel-central-registry, improving dependency management and integration for JVM projects. No major bugs fixed this month. Overall impact: enhanced build reliability and reproducibility across downstream projects, reduced maintenance burden through updated artifacts, and alignment with central registry modernization. Technologies demonstrated: Bazel, Rules_jvm_external, Java/JVM ecosystem, dependency management, version upgrades, and impact assessment.

September 2025

1 Commits • 1 Features

Sep 1, 2025

Summary for 2025-09: Implemented the Contrib Rules JVM Bazel Module 0.30.0 for grpc/bazel-central-registry, updated dependencies, patched rules for future Bazel compatibility, and configured linters and build targets to preserve JVM ruleset integrity. Focused on build hygiene and long-term maintainability to reduce risk across consumer repos.

August 2025

1 Commits • 1 Features

Aug 1, 2025

August 2025 (SeleniumHQ/selenium): Focused on modernizing build tooling by upgrading the Bazel dependency resolver and simplifying overrides to improve build reliability and maintainability. Upgraded rules_jvm_external to version 6.8, updated MODULE.bazel, and migrated from a git_override to a single_version_override to leverage latest features and bug fixes in rules_jvm_external. The change reduces configuration drift and enables smoother iteration with up-to-date Java toolchains and ecosystem fixes.

July 2025

1 Commits

Jul 1, 2025

Monthly summary for 2025-07 focusing on key accomplishments and business impact for grpc/bazel-central-registry.

May 2025

4 Commits • 2 Features

May 1, 2025

May 2025 - SeleniumHQ/selenium: Delivered key features and fixes across the Java dependency lifecycle, ChromiumDriver safety, and Bazel-based build tooling. Implemented BOM-driven Java dependency management in MODULE.bazel and updated BOM versions (OpenTelemetry, Netty, JUnit). Netty 4.2.0.Final update was intentionally omitted due to a Java module generation bug. Hardened ChromiumDriver by returning immutable collections to prevent external modification, increasing runtime safety. Updated Bazel JS/TS rules to the latest Aspect rules to leverage new features and bug fixes, enabling smoother cross-language builds. These changes reduce dependency drift, improve stability, and demonstrate strong cross-functional skills across Java, JS/TS, and Bazel ecosystems.

March 2025

10 Commits • 2 Features

Mar 1, 2025

March 2025 performance summary for SeleniumHQ/selenium: Delivered two high-impact features in BiDi handling and modernized the build/CI stack to improve reliability and maintainability. This work delivered tangible business value: more robust BiDi parameter handling, safer data serialization, faster, more reliable CI feedback, and cleaner, more maintainable build configuration.

February 2025

2 Commits • 1 Features

Feb 1, 2025

February 2025 monthly summary for SeleniumHQ/selenium focused on Bazel 8 upgrade readiness and preparing for future repository naming conventions. Implemented compatibility and cleanup work to minimize upgrade friction, improve build reliability, and set the stage for smoother onboarding and maintenance.

January 2025

3 Commits • 1 Features

Jan 1, 2025

Monthly summary for 2025-01 (SeleniumHQ/selenium): Delivered Bazel Build System Dependency Upgrades and Stabilization across core build, Python test environment, and JavaScript tooling. This work stabilized the build daemon, standardized test execution, and laid the groundwork for future JavaScript tooling performance improvements, reducing CI flakiness and accelerating feedback for contributors.

December 2024

3 Commits • 1 Features

Dec 1, 2024

December 2024 monthly summary for SeleniumHQ/selenium focusing on Build System Stabilization and dependency discipline to support upcoming Bazel rule bumps. Implemented protobuf and closure rule upgrades to improve build reliability and prep for future changes.

November 2024

2 Commits • 1 Features

Nov 1, 2024

Summary for 2024-11: Focused on codebase maintenance and build-system improvements for SeleniumHQ/selenium. No user-facing bug fixes this period. The work improves maintainability, reproducible builds, and supply-chain governance. Key outcomes include documentation updates, BOM-based dependency management upgrades, and Bazel build enhancements.

Activity

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Quality Metrics

Correctness91.0%
Maintainability90.0%
Architecture89.0%
Performance79.6%
AI Usage21.4%

Skills & Technologies

Programming Languages

BazelBzlC#JavaJavaScriptPythonRubyRustShellStarlark

Technical Skills

API DesignAPI DevelopmentBazelBrowser AutomationBuild AutomationBuild System ConfigurationBuild System ManagementBuild SystemsBuild ToolsBzlmodCI/CDCode FormattingCode MaintenanceCode RefactoringConfiguration Management

Repositories Contributed To

3 repos

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

SeleniumHQ/selenium

Nov 2024 Aug 2025
7 Months active

Languages Used

C#StarlarkBazelBzlPythonJavaJavaScriptRuby

Technical Skills

BazelBuild System ConfigurationCode MaintenanceDependency ManagementBuild SystemsBuild System Management

grpc/bazel-central-registry

Jul 2025 Nov 2025
3 Months active

Languages Used

JavaStarlarkBazel

Technical Skills

BazelBuild SystemsBzlmodDependency ManagementJava DevelopmentJava

bazelbuild/bazel-central-registry

Jan 2026 Feb 2026
2 Months active

Languages Used

Bazel

Technical Skills

Java developmentbuild system configurationdependency managementBazelJavabuild systems