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Jeremy McCormick

PROFILE

Jeremy Mccormick

Over 18 months, contributed to the lsst/sdm_schemas and lsst-sqre/phalanx repositories, building robust data schema management and deployment automation for astronomical data pipelines. Leveraged Python, YAML, and Kubernetes to modernize schema definitions, automate CI/CD workflows, and streamline cloud-based deployments. Work included refactoring schema metadata, enhancing documentation, and implementing configuration management practices that improved data integrity and release reliability. Developed CLI tools and build scripts to support reproducible deployments and cross-platform compatibility. Addressed database design challenges by introducing composite keys, indexing, and constraint standardization, while maintaining release hygiene and accelerating onboarding for contributors through improved technical writing and workflow automation.

Overall Statistics

Feature vs Bugs

83%Features

Repository Contributions

236Total
Bugs
16
Commits
236
Features
79
Lines of code
98,266
Activity Months18

Work History

May 2026

2 Commits • 1 Features

May 1, 2026

May 2026 monthly summary for lsst-sqre/phalanx: Delivered deployment tag strategy improvements to consolidate image tagging across USDF environments, enabling access to latest schema features and reducing deployment issues. Updated tapSchema image tag and datalinkPayloadUrl to the latest w.2026.18, and migrated configurations to use the main image tag instead of a pinned version. This work improves environment parity, accelerates feature rollouts, and reduces deployment failures.

April 2026

1 Commits • 1 Features

Apr 1, 2026

Concise monthly summary for April 2026 focusing on testing infrastructure improvements in lsst-sqre/phalanx. The main delivery was a forward-looking upgrade to the testing environment via schema upgrades and source template alignment to the latest testing framework, enabling more reliable test results and faster feedback cycles.

March 2026

5 Commits • 1 Features

Mar 1, 2026

2026-03 monthly summary for lsst-sqre/phalanx: Focused on stabilizing and accelerating the development environment and addressing deployment reliability. Delivered development environment deployment/config improvements and fixed a PVC YAML typo. The changes reduce provisioning time, minimize configuration drift, and bring dev config closer to production, enabling faster, safer iterations for the team.

January 2026

13 Commits • 5 Features

Jan 1, 2026

January 2026 performance highlights across sdm_schemas and phalanx focused on schema cleanliness, CI readiness, and deployment reliability. Major schema improvements streamlined data processing and reduced maintenance friction, while CI- and release-focused work improved velocity and readability of changes for users. The work delivered enhanced data compatibility, improved documentation, and production-ready deployment capabilities, setting the stage for more robust pipelines and faster release cycles.

December 2025

9 Commits • 4 Features

Dec 1, 2025

Month: 2025-12 — Multi-repo contributions across lsst/sdm_schemas and lsst-sqre/phalanx. Key features delivered, major bugs fixed, and business-value oriented outcomes summarized below. - CI/CD tooling and dependency management improvements in lsst/sdm_schemas: introduced sdm_tools, streamlined dependencies, and updated workflows to accelerate testing and deployment. - Schema cleanup: removed obsolete @id fields from ImSim and HSC schemas to improve validation and schema cleanliness. - Configuration management modernization in lsst-sqre/phalanx: moved ppdbConfig path to a new user-specific configuration file, laying groundwork for future group-path configuration and easier maintenance. - ppdb-replication image policy and docs: set image pull policy to Always and updated documentation; adjusted checkInterval to 300 for fresher replica checks. - Tap images and datalink payload: updated to version w.2025.50 to include latest features and fixes. Overall, these changes reduce deployment risk, improve data freshness and accessibility, and strengthen configuration governance. Demonstrated skills include Python packaging and tooling, CI/CD workflow optimization, container/image policy management, documentation discipline, and cross-repo coordination for release readiness.

November 2025

1 Commits • 1 Features

Nov 1, 2025

November 2025 monthly summary: Focused on deployment reliability and release hygiene for PPDB replication in lsst-sqre/phalanx. Implemented deployment optimization by changing the image pull policy from Always to IfNotPresent and updating the image tag to 'main' to use the latest stable release while reducing unnecessary image pulls. This work is tracked by commit c10fcbe487f10b93553fbe047812da69e355e4cb ('Update image tag of ppdb-replication to main'). There were no major bugs fixed this month; the primary value delivered is more reliable, faster deployments with predictable versioning. Technologies demonstrated include Kubernetes deployment practices, container image tagging/versioning, and alignment with standard release processes.

October 2025

9 Commits • 3 Features

Oct 1, 2025

Concise monthly summary for Oct 2025 focusing on lsst/sdm_schemas: Delivered indexing enhancements, UI visibility improvements, and comprehensive schema hardening with a clear upgrade path and documentation. The work emphasizes performance, data integrity, and maintainability, directly supporting data quality and developer productivity across the repository.

September 2025

2 Commits • 1 Features

Sep 1, 2025

September 2025 monthly summary for lsst-sqre/phalanx. Delivered a critical feature upgrade for the CADC TAP deployment to DP1-1.2.0 sdm_schemas and tap-schema 1.2.0, ensuring compatibility with the latest schema definitions, and aligning metadata/payload URL handling across datalink and charts. Updated deployment artifacts (README and values.yaml) to reflect the new schema releases and image versions, and maintained deployment consistency across environments.

July 2025

22 Commits • 5 Features

Jul 1, 2025

July 2025 performance summary focusing on delivering core data schema enhancements, cross-repo environment upgrades, and robust tooling to improve data integrity, release hygiene, and production readiness. The month emphasized business value through data model improvements, consistency across TAP ecosystems, and scalable infrastructure for data replication and storage.

June 2025

44 Commits • 12 Features

Jun 1, 2025

June 2025 monthly summary for LSST development work focusing on delivering robust data access, schema reliability, and deployment consistency across core repositories (lsst-sqre/phalanx and lsst/sdm_schemas).

May 2025

30 Commits • 10 Features

May 1, 2025

May 2025 performance summary for lsst-sqre/phalanx and lsst/sdm_schemas. This month delivered a set of core data-pipeline improvements, deployment template enhancements, security hardening, and quality-of-life fixes that collectively improve reliability, security, and developer productivity. The work spanned PPDB replication, Parquet export, uploader deployment, CLI conventions, exporter tuning, deployment templating, and schema/tap schema improvements, with a focus on delivering business value and maintainable configurations.

April 2025

36 Commits • 17 Features

Apr 1, 2025

April 2025 monthly summary focusing on key accomplishments, business value, and technical achievements across SDM schema and deployment stacks. The work delivered governance artifacts, schema alignment, UI/content reliability improvements, and automation enhancements that reduce deployment risk and accelerate release readiness. Skills demonstrated include cross-repo coordination, YAML/CI pipeline improvements, and data-model modernization.

March 2025

22 Commits • 5 Features

Mar 1, 2025

March 2025 delivered robust CI/CD automation and build tooling for sdm_schemas, standardized schema metadata, and release tooling, while laying the groundwork for containerized deployment and secret management in phalanx via consdbtap scaffolding, resource tuning, and secret-management exploration. These efforts improved data quality, reproducibility, deployment readiness, and developer productivity across two repositories.

February 2025

11 Commits • 3 Features

Feb 1, 2025

February 2025: Delivered modernization, reliability, and schema alignment across the SDM schemas stack and cadc-tap integration. Key efforts included a build/packaging modernization using sdm_tools for lsst/sdm_schemas, schema namespace reorganization to improve modularity, and TAP_SCHEMA test stabilization in CI. Cadc-tap was updated to the latest schema definitions to maintain compatibility with current datalink payloads and schema references.

January 2025

5 Commits • 2 Features

Jan 1, 2025

January 2025 monthly summary: Delivered critical features and stability improvements across lsst-sqre/phalanx and lsst/sdm_schemas, aligning Cadc-tap with current schemas, enabling streamlined TAP schema loading, and stabilizing test workflows. These changes improve data access reliability, speed deployment, and reduce maintenance overhead by standardizing schema handling and test isolation across repositories.

December 2024

8 Commits • 3 Features

Dec 1, 2024

December 2024 was focused on strengthening CI governance for sd m_schemas, improving contributor onboarding, and delivering client-facing APDB documentation. The work reduced schema drift risk, accelerated validated deployments, and clarified contributor processes to support open collaboration.

November 2024

11 Commits • 2 Features

Nov 1, 2024

November 2024: Stabilized and unified CI/CD for lsst/sdm_schemas, removing deprecated workflows and standardizing build triggers and image tagging to boost release reliability and reduce maintenance. Improved build integrity with fetch-depth and ensured full git history for tags. Expanded validation coverage by introducing a validation workflow with all extra checks enabled. Enhanced repository hygiene with targeted .gitignore updates (lsst version file, config.log) and cleaner build artifacts. Boosted discoverability in pipelines_lsst_io by adding a documentation section with external links to astro_metadata_translator, SDM Schemas, and Felis. Overall impact: faster, more reliable releases, reduced toil, and clearer guidance for developers and users. Technologies/skills demonstrated: GitHub Actions CI/CD, Docker image tagging, versioning and validation automation, build tooling (SCons), and documentation practices.

October 2024

5 Commits • 3 Features

Oct 1, 2024

In October 2024, the SDM Schemas project in lsst/sdm_schemas delivered key maintainability and reliability improvements, focusing on documentation, installation flows, and schema integrity. Highlights include a comprehensive documentation overhaul, removal of a custom install script in favor of standard mechanisms, upgrading the PostgreSQL driver for cross-platform compatibility, and a targeted bug fix reverting an unintended schema change. These changes reduce onboarding friction, simplify deployments, and strengthen cross-platform support, delivering measurable business value in faster deployment cycles and lower maintenance risk.

Activity

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Quality Metrics

Correctness95.6%
Maintainability96.4%
Architecture93.8%
Performance92.4%
AI Usage20.0%

Skills & Technologies

Programming Languages

BashGitGoHTMLHelmLaTeXLiquidMakefileMarkdownPython

Technical Skills

Astronomy Data StandardsBuild AutomationBuild ConfigurationBuild ScriptingBuild SystemBuild System ConfigurationBuild System ManagementCI/CDCI/CD ConfigurationCLI ToolsCloud DeploymentCloud InfrastructureCode MigrationCode OrganizationConfiguration

Repositories Contributed To

4 repos

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

lsst/sdm_schemas

Oct 2024 Jan 2026
13 Months active

Languages Used

MarkdownShellTOMLTextYAMLBashGitPython

Technical Skills

Build SystemDependency ManagementDocumentationDocumentation ManagementSchema ManagementScripting

lsst-sqre/phalanx

Jan 2025 May 2026
14 Months active

Languages Used

MarkdownYAMLjinjayamlGoHelmsh

Technical Skills

Configuration ManagementHelm ChartsDevOpsHelmKubernetesDatabase Configuration

lsst-pst/pstn-019

Apr 2025 Apr 2025
1 Month active

Languages Used

LaTeXYAML

Technical Skills

Configuration ManagementDocumentationTechnical Writing

lsst/pipelines_lsst_io

Nov 2024 Nov 2024
1 Month active

Languages Used

rst

Technical Skills

Documentation