
Andrew Bradshaw engineered and modernized the build and CI infrastructure for the percona/percona-server-mongodb repository, focusing on cross-platform reliability, performance optimization, and maintainability. He migrated core build systems to Bazel, integrated advanced features like Profile-Guided Optimization and WebAssembly support, and automated profiling workflows to streamline performance tuning. Leveraging C++, Python, and Rust, Andrew improved build determinism, reduced CI flakiness, and enhanced packaging for Windows and macOS. His work included refining dependency management, enabling robust debugging with gdwarf64, and maintaining strict versioning for Rust dependencies, resulting in reproducible builds and efficient release cycles. The engineering demonstrated depth and sustained impact.
March 2026: Focused on Rust dependency versioning and cross-toolchain build stability for the Percona server MongoDB project. Implemented strict patch-version locking, added and updated Cargo.lock for deterministic builds, and resolved cross-toolchain lock issues to ensure reproducible builds across CI environments.
March 2026: Focused on Rust dependency versioning and cross-toolchain build stability for the Percona server MongoDB project. Implemented strict patch-version locking, added and updated Cargo.lock for deterministic builds, and resolved cross-toolchain lock issues to ensure reproducible builds across CI environments.
February 2026: Delivered core enhancements across the percona-server-mongodb repo, focusing on performance optimization enablement, debugging support, CI automation, and workflow improvements. Implemented backport ticketing for PGO optimization and versioned updates management, enabled gdwarf64 for detailed clang symbols, integrated monguard CI in Evergreen, removed exclusions in task generation to streamline commit-queue tasks, and fixed a Prettier formatting guard to protect monguard contents. These changes increase release readiness, debugging efficiency, and pipeline reliability while reducing ticket backlogs and manual coordination.
February 2026: Delivered core enhancements across the percona-server-mongodb repo, focusing on performance optimization enablement, debugging support, CI automation, and workflow improvements. Implemented backport ticketing for PGO optimization and versioned updates management, enabled gdwarf64 for detailed clang symbols, integrated monguard CI in Evergreen, removed exclusions in task generation to streamline commit-queue tasks, and fixed a Prettier formatting guard to protect monguard contents. These changes increase release readiness, debugging efficiency, and pipeline reliability while reducing ticket backlogs and manual coordination.
Summary for 2026-01 focusing on delivering business value, technical improvements, and maintainability for percona/percona-server-mongodb. Achievements cover WebAssembly enablement, installation integrity, and performance/quality improvements across core dependencies and build tooling. Scope and impact are aligned with improving extensibility, deployment reliability, and developer productivity.
Summary for 2026-01 focusing on delivering business value, technical improvements, and maintainability for percona/percona-server-mongodb. Achievements cover WebAssembly enablement, installation integrity, and performance/quality improvements across core dependencies and build tooling. Scope and impact are aligned with improving extensibility, deployment reliability, and developer productivity.
December 2025 monthly summary for percona/percona-server-mongodb. Focused on delivering a modernized build system, improved debug/testing configurations, and reliability enhancements that drive faster development cycles and smoother deployments. Improvements span build toolchain modernization, Abseil integration, static linking, and refined debug/test configurations, alongside a Linux debug information reliability fix.
December 2025 monthly summary for percona/percona-server-mongodb. Focused on delivering a modernized build system, improved debug/testing configurations, and reliability enhancements that drive faster development cycles and smoother deployments. Improvements span build toolchain modernization, Abseil integration, static linking, and refined debug/test configurations, alongside a Linux debug information reliability fix.
November 2025 monthly summary for percona/percona-server-mongodb focusing on developer tooling improvements and build-system modernization to enhance cross-platform reliability and maintainability. Deliverables drove reduced lint noise, clearer actionable output, and a streamlined, maintainable build configuration across Windows and Linux.
November 2025 monthly summary for percona/percona-server-mongodb focusing on developer tooling improvements and build-system modernization to enhance cross-platform reliability and maintainability. Deliverables drove reduced lint noise, clearer actionable output, and a streamlined, maintainable build configuration across Windows and Linux.
2025-10 Monthly Summary — Percona Server MongoDB: Infrastructure stabilization and profiling data governance drive faster release readiness and more reliable performance insights. Stabilized cross-architecture CI by reverting aubsan to RHEL8 and adjusting s390x tests to an 8-way split, reducing build flakiness and test runtime variability. Moved ownership of PGO profiling data to the performance team and updated CODEOWNERS, OWNERS.yml, and profiling_data.bzl to reference new data URLs, clarifying accountability and accelerating profiling workflows.
2025-10 Monthly Summary — Percona Server MongoDB: Infrastructure stabilization and profiling data governance drive faster release readiness and more reliable performance insights. Stabilized cross-architecture CI by reverting aubsan to RHEL8 and adjusting s390x tests to an 8-way split, reducing build flakiness and test runtime variability. Moved ownership of PGO profiling data to the performance team and updated CODEOWNERS, OWNERS.yml, and profiling_data.bzl to reference new data URLs, clarifying accountability and accelerating profiling workflows.
September 2025 (2025-09) monthly summary for percona/percona-server-mongodb. Focused on strengthening CI/build reliability, delivering targeted performance improvements, and automating profiling workflows to reduce manual overhead. The changes improve delivery velocity, benchmarking fidelity, and cross-platform consistency, with clear business value in faster, more reliable releases and better insight into performance characteristics.
September 2025 (2025-09) monthly summary for percona/percona-server-mongodb. Focused on strengthening CI/build reliability, delivering targeted performance improvements, and automating profiling workflows to reduce manual overhead. The changes improve delivery velocity, benchmarking fidelity, and cross-platform consistency, with clear business value in faster, more reliable releases and better insight into performance characteristics.
Concise monthly summary for 2025-07 focusing on business value and technical achievements for the percona/percona-server-mongodb repository.
Concise monthly summary for 2025-07 focusing on business value and technical achievements for the percona/percona-server-mongodb repository.
June 2025 focused on strengthening Windows CI reliability, refining build configurations for open-source and enterprise builds, and improving cross-language tooling, while reducing CI noise. Delivered concrete value across percona/percona-server-mongodb by enabling automated Windows MSI testing in CI with signing prerequisites, propagating enterprise flags through OSS builds, and cleaning up GRPC import paths. Also reduced unnecessary CI steps and hardened Windows scripting with UTF-8 handling for YAML. These changes lower deployment risk, improve cross-platform consistency, and support scalable release processes.
June 2025 focused on strengthening Windows CI reliability, refining build configurations for open-source and enterprise builds, and improving cross-language tooling, while reducing CI noise. Delivered concrete value across percona/percona-server-mongodb by enabling automated Windows MSI testing in CI with signing prerequisites, propagating enterprise flags through OSS builds, and cleaning up GRPC import paths. Also reduced unnecessary CI steps and hardened Windows scripting with UTF-8 handling for YAML. These changes lower deployment risk, improve cross-platform consistency, and support scalable release processes.
Concise monthly summary for 2025-05 focusing on Bazel build improvements in percona/percona-server-mongodb. Implemented performance and reliability enhancements to the Bazel-based build, delivering faster, more deterministic builds and a cleaner developer experience.
Concise monthly summary for 2025-05 focusing on Bazel build improvements in percona/percona-server-mongodb. Implemented performance and reliability enhancements to the Bazel-based build, delivering faster, more deterministic builds and a cleaner developer experience.
April 2025 monthly summary for percona/percona-server-mongodb. Key achievements include macOS distribution readiness for mongo_crypt (packaging/notarization) and substantial build-system improvements to accelerate CI, improve debug information, and enhance Evergreen workflows. Focused on packaging reliability, security posture, and faster release cycles, with clear demonstrations of cross-cutting engineering skills.
April 2025 monthly summary for percona/percona-server-mongodb. Key achievements include macOS distribution readiness for mongo_crypt (packaging/notarization) and substantial build-system improvements to accelerate CI, improve debug information, and enhance Evergreen workflows. Focused on packaging reliability, security posture, and faster release cycles, with clear demonstrations of cross-cutting engineering skills.
March 2025: Modernized CI/build infrastructure for percona-server-mongodb, delivering Bazel-based migration from SCons with enhanced test infra and MSI packaging, Windows CI hardware upgrades, and macOS packaging reliability fixes. These changes reduce build times, improve packaging reliability, and broaden platform coverage, accelerating release cycles and overall developer productivity.
March 2025: Modernized CI/build infrastructure for percona-server-mongodb, delivering Bazel-based migration from SCons with enhanced test infra and MSI packaging, Windows CI hardware upgrades, and macOS packaging reliability fixes. These changes reduce build times, improve packaging reliability, and broaden platform coverage, accelerating release cycles and overall developer productivity.
February 2025: Delivered substantial improvements to the build/test pipeline for percona/percona-server-mongodb. Key outcomes include: 1) Bazel Build Tool Upgrade to 7.5.0 (commit 802e24e43f890aaa4d1def76abc85c7e91a31a55), with updated Bazel version file and refreshed S3 hash mappings across architectures to improve stability and performance; 2) MongoT integration in Bazel for Evergreen tasks, enabling optional MongoT binaries to be downloaded and integrated as part of the test/build workflows (commit 254cb9375520440006484205f7543326ca6acb27); 3) Automated Bazel target generation for install, test, and bench suites using dynamic BUILD.bazel generation A scripts and flags/config, including reverts to re-enable enterprise-related targets (commits 47332ed76df0eb4b6ac4c1cc8159adf7dd0f9617, d7553ed000a269c0cbdebcc2a121a957141fc29a, 770f764bacd543804d196a75643ece781d07ac7e); 4) Collect Installed Test Binaries During Install by extending Bazel rules to output a list of installed test binaries for easier management and traceability (commit 7d40c39cd2b31c2431e242eb52f052aa3ad85268). These changes reduce build times, improve reproducibility, and enable more predictable Evergreen-based CI workflows.
February 2025: Delivered substantial improvements to the build/test pipeline for percona/percona-server-mongodb. Key outcomes include: 1) Bazel Build Tool Upgrade to 7.5.0 (commit 802e24e43f890aaa4d1def76abc85c7e91a31a55), with updated Bazel version file and refreshed S3 hash mappings across architectures to improve stability and performance; 2) MongoT integration in Bazel for Evergreen tasks, enabling optional MongoT binaries to be downloaded and integrated as part of the test/build workflows (commit 254cb9375520440006484205f7543326ca6acb27); 3) Automated Bazel target generation for install, test, and bench suites using dynamic BUILD.bazel generation A scripts and flags/config, including reverts to re-enable enterprise-related targets (commits 47332ed76df0eb4b6ac4c1cc8159adf7dd0f9617, d7553ed000a269c0cbdebcc2a121a957141fc29a, 770f764bacd543804d196a75643ece781d07ac7e); 4) Collect Installed Test Binaries During Install by extending Bazel rules to output a list of installed test binaries for easier management and traceability (commit 7d40c39cd2b31c2431e242eb52f052aa3ad85268). These changes reduce build times, improve reproducibility, and enable more predictable Evergreen-based CI workflows.
January 2025 monthly summary for percona/percona-server-mongodb: Focused on improving build reliability and release readiness through Bazel build system enhancements and Windows MSI packaging, delivering measurable business value through faster local development, consistent installers, and smoother CI workflows.
January 2025 monthly summary for percona/percona-server-mongodb: Focused on improving build reliability and release readiness through Bazel build system enhancements and Windows MSI packaging, delivering measurable business value through faster local development, consistent installers, and smoother CI workflows.
December 2024 (Month: 2024-12) – For percona/percona-server-mongodb, delivered a modernization of the build system with targeted Windows reliability improvements and cross-platform performance enhancements. Key features delivered include a Bazel-based build system overhaul paired with developer tooling: build profiles, deterministic developer build versioning, migration of test binaries to Bazel, and experiments with fission and remote caching, along with distro-specific feature toggles to optimize build performance and developer experience. Major bugs fixed include Windows-specific build integration issues resolved by switching to file copies instead of hardlinks, ensuring reliable cleanup and execution steps. Additional Linux optimization included avoiding intermediate .a files during static linking to reduce artifact churn and speed up builds. Overall impact: faster, more reproducible builds across platforms, improved developer onboarding, and reduced CI risk due to Windows build fragility. Technologies/skills demonstrated: Bazel-based tooling and build-system modernization, cross-platform development, Windows build integration, performance optimization, and build-system experimentation (fission, remote caching).
December 2024 (Month: 2024-12) – For percona/percona-server-mongodb, delivered a modernization of the build system with targeted Windows reliability improvements and cross-platform performance enhancements. Key features delivered include a Bazel-based build system overhaul paired with developer tooling: build profiles, deterministic developer build versioning, migration of test binaries to Bazel, and experiments with fission and remote caching, along with distro-specific feature toggles to optimize build performance and developer experience. Major bugs fixed include Windows-specific build integration issues resolved by switching to file copies instead of hardlinks, ensuring reliable cleanup and execution steps. Additional Linux optimization included avoiding intermediate .a files during static linking to reduce artifact churn and speed up builds. Overall impact: faster, more reproducible builds across platforms, improved developer onboarding, and reduced CI risk due to Windows build fragility. Technologies/skills demonstrated: Bazel-based tooling and build-system modernization, cross-platform development, Windows build integration, performance optimization, and build-system experimentation (fission, remote caching).
2024-11 Monthly Summary for percona/percona-server-mongodb: This period focused on upgrading the build system, optimizing build performance, and stabilizing cross-platform builds. Deliveries improved CI reliability, reduced build times, and enhanced cache efficiency on Windows, enabling faster iteration and broader platform support.
2024-11 Monthly Summary for percona/percona-server-mongodb: This period focused on upgrading the build system, optimizing build performance, and stabilizing cross-platform builds. Deliveries improved CI reliability, reduced build times, and enhanced cache efficiency on Windows, enabling faster iteration and broader platform support.

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