NCI-GDC/gdc-frontend-framework
Nov 2024 – Feb 2026
14 Months active
Languages Used
CSSJavaScriptTypeScriptReactSVGtsxHTMLJSON
Technical Skills
Build ConfigurationComponent Library DevelopmentFront End DevelopmentReactTypeScriptAPI Integration
Amy Lehman
PROFILE
Amy Lehman
Andrew Lehman developed and maintained core features for the NCI-GDC/gdc-frontend-framework over 14 months, focusing on scalable cohort management, robust data visualization, and secure UI architecture. He engineered reusable component libraries and enhanced the Cohort Builder with advanced filtering, state management, and user feedback mechanisms using React, TypeScript, and GraphQL. His work included chart export improvements, security hardening with Content Security Policy, and performance optimizations for clinical data analysis. By refactoring data models and integrating automated testing, Andrew improved code maintainability and reliability. His contributions addressed both user experience and technical debt, supporting stable, extensible frontend development for research applications.
Overall Statistics
Feature vs Bugs
75%Features
Repository Contributions
64Total
Bugs
10
Commits
64
Features
30
Lines of code
111,005
Activity Months14
Your Network
97 peopleShared Repositories
7
Work History
February 2026
2 Commits • 1 Features
Feb 1, 2026February 2026 performance highlights for NCI-GDC/gdc-frontend-framework: Delivered UI improvements to cohort management and enhanced data robustness for canonical consequences. Key features delivered: Cohort Pin/Unpin Interaction Enhancement using an ActionIcon for pin/unpin in the cohort builder, providing clearer feedback and faster interaction. Major bugs fixed: SetDetailPanel canonical consequence display robustness by fixing protein change display and adding handling when no canonical transcript is available, improving data accuracy and resilience. Overall impact: improved user efficiency in cohort management and increased data integrity with robust handling of missing data. Technologies/skills demonstrated: frontend UI component design (ActionIcon), data validation and robustness, ticket-driven development, and cross-functional collaboration.
2 Commits • 1 Features
Feb 1, 2026February 2026 performance highlights for NCI-GDC/gdc-frontend-framework: Delivered UI improvements to cohort management and enhanced data robustness for canonical consequences. Key features delivered: Cohort Pin/Unpin Interaction Enhancement using an ActionIcon for pin/unpin in the cohort builder, providing clearer feedback and faster interaction. Major bugs fixed: SetDetailPanel canonical consequence display robustness by fixing protein change display and adding handling when no canonical transcript is available, improving data accuracy and resilience. Overall impact: improved user efficiency in cohort management and increased data integrity with robust handling of missing data. Technologies/skills demonstrated: frontend UI component design (ActionIcon), data validation and robustness, ticket-driven development, and cross-functional collaboration.
February 2026
January 2026
5 Commits • 3 Features
Jan 1, 2026January 2026 monthly summary for NCI-GDC/gdc-frontend-framework focusing on user-centric cohort management enhancements, UI clarity improvements, and stability fixes. Key deliverables include cohort UX improvements for state management and selection flow, display of app context name to improve portal UI clarity, a dependency upgrade to keep the frontend framework current and secure, and visualization fixes that ensure accurate data representation.
January 2026
5 Commits • 3 Features
Jan 1, 2026January 2026 monthly summary for NCI-GDC/gdc-frontend-framework focusing on user-centric cohort management enhancements, UI clarity improvements, and stability fixes. Key deliverables include cohort UX improvements for state management and selection flow, display of app context name to improve portal UI clarity, a dependency upgrade to keep the frontend framework current and secure, and visualization fixes that ensure accurate data representation.
December 2025
8 Commits • 5 Features
Dec 1, 2025December 2025 — NCI-GDC/gdc-frontend-framework: Focused on UX clarity, data fidelity, CSP instrumentation, and security hygiene. Key outcomes include: Cohort UX improvements with proper text wrapping and a warning banner for deprecated/nonexistent fields to reduce user confusion; Cohort Builder facet types and max values fix to ensure accurate data representation; Expanded CSP tracking sources to enable data collection from two additional sites without CSP block issues; Flexible chart download size calculation allowing per-chart or entire-element sizing for histograms and survival plots; Security and repository hygiene upgrades including Next.js 15.5.9, Mantine v8, and type-safety/config improvements to strengthen deployment safety and contributor experience. These changes drive clearer cohorts, more reliable data, broader data collection, and safer, more maintainable releases. Technologies demonstrated include Next.js 15.5.9, Mantine v8, CSP policy handling, TypeScript/type safety enhancements, and configuration hygiene.
8 Commits • 5 Features
Dec 1, 2025December 2025 — NCI-GDC/gdc-frontend-framework: Focused on UX clarity, data fidelity, CSP instrumentation, and security hygiene. Key outcomes include: Cohort UX improvements with proper text wrapping and a warning banner for deprecated/nonexistent fields to reduce user confusion; Cohort Builder facet types and max values fix to ensure accurate data representation; Expanded CSP tracking sources to enable data collection from two additional sites without CSP block issues; Flexible chart download size calculation allowing per-chart or entire-element sizing for histograms and survival plots; Security and repository hygiene upgrades including Next.js 15.5.9, Mantine v8, and type-safety/config improvements to strengthen deployment safety and contributor experience. These changes drive clearer cohorts, more reliable data, broader data collection, and safer, more maintainable releases. Technologies demonstrated include Next.js 15.5.9, Mantine v8, CSP policy handling, TypeScript/type safety enhancements, and configuration hygiene.
December 2025
November 2025
2 Commits • 2 Features
Nov 1, 2025Month 2025-11: Delivered robust UX and data-model improvements in the gdc-frontend-framework, focusing on stability of the body plot and Cohort Builder. Implemented a warning mechanism for unmapped primary sites in the body plot to prevent crashes and enhanced data handling by adding a 'Not Applicable' mapping. Completed data-model refactor by removing deprecated facet_additional_data.json to streamline cohort data usage and support future restructuring. These changes reduce runtime errors, improve data resilience, and pave the way for smoother future enhancements.
November 2025
2 Commits • 2 Features
Nov 1, 2025Month 2025-11: Delivered robust UX and data-model improvements in the gdc-frontend-framework, focusing on stability of the body plot and Cohort Builder. Implemented a warning mechanism for unmapped primary sites in the body plot to prevent crashes and enhanced data handling by adding a 'Not Applicable' mapping. Completed data-model refactor by removing deprecated facet_additional_data.json to streamline cohort data usage and support future restructuring. These changes reduce runtime errors, improve data resilience, and pave the way for smoother future enhancements.
October 2025
1 Commits • 1 Features
Oct 1, 2025In 2025-10, delivered a targeted enhancement to chart exports in the NCI-GDC/gdc-frontend-framework that improves readability and legend visibility in downloaded visuals. The feature adds a legend to downloaded charts, introduces a showLegend prop on BarChart, adjusts axis margins for better tick visibility, and updates CNVPlot to pass showLegend and use a separate divId for the download chart, ensuring the legend renders correctly when checkboxes are selected. This work, tracked under PEAR-2527 (commit 026db8b6f7e1ecf85dce1bb50ee77d0c592ee2c6), fixes cut-off ticks and enhances export fidelity.
1 Commits • 1 Features
Oct 1, 2025In 2025-10, delivered a targeted enhancement to chart exports in the NCI-GDC/gdc-frontend-framework that improves readability and legend visibility in downloaded visuals. The feature adds a legend to downloaded charts, introduces a showLegend prop on BarChart, adjusts axis margins for better tick visibility, and updates CNVPlot to pass showLegend and use a separate divId for the download chart, ensuring the legend renders correctly when checkboxes are selected. This work, tracked under PEAR-2527 (commit 026db8b6f7e1ecf85dce1bb50ee77d0c592ee2c6), fixes cut-off ticks and enhances export fidelity.
October 2025
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 performance summary for NCI-GDC/gdc-frontend-framework: Delivered the Set Modals Data Ordering Enhancements feature, standardizing data ordering parameterization and improving data manipulation in modal set operations. The change renames the sorting parameter from 'sort' to 'score' for consistency and adds an optional 'sort' parameter to enable more flexible data ordering within modal components. This aligns with design/system naming conventions, reduces technical debt, and improves developer ergonomics for modal data workflows. The work is tracked under PEAR-2403 with the commit 0816282f1bcba3ab79714a8aad9eb3a6a427e28d and closes the related issue (#1605).
September 2025
1 Commits • 1 Features
Sep 1, 2025September 2025 performance summary for NCI-GDC/gdc-frontend-framework: Delivered the Set Modals Data Ordering Enhancements feature, standardizing data ordering parameterization and improving data manipulation in modal set operations. The change renames the sorting parameter from 'sort' to 'score' for consistency and adds an optional 'sort' parameter to enable more flexible data ordering within modal components. This aligns with design/system naming conventions, reduces technical debt, and improves developer ergonomics for modal data workflows. The work is tracked under PEAR-2403 with the commit 0816282f1bcba3ab79714a8aad9eb3a6a427e28d and closes the related issue (#1605).
August 2025
6 Commits • 3 Features
Aug 1, 2025Concise monthly summary for August 2025 (NCI-GDC/gdc-frontend-framework). Focused on delivering performance improvements, stability, and UI polish for the Cohort Builder and Clinical Data Analysis components, while maintaining data accuracy and codebase maintainability.
6 Commits • 3 Features
Aug 1, 2025Concise monthly summary for August 2025 (NCI-GDC/gdc-frontend-framework). Focused on delivering performance improvements, stability, and UI polish for the Cohort Builder and Clinical Data Analysis components, while maintaining data accuracy and codebase maintainability.
August 2025
May 2025
12 Commits • 2 Features
May 1, 2025May 2025 performance summary for NCI-GDC/gdc-frontend-framework: Delivered major Cohort Builder UX and data integrity enhancements, strengthened testing and QA tooling, and stabilized UI behavior to reduce regression risk. Highlights include static cohort creation on replacement, improved filtering and facet handling, range card UI improvements, validation for exact value filters, improved cohort replacement messaging, session expiration modal with mock server, reintroduction of test IDs for UI components, and fixes for duplicate string filters and UI edge cases. These changes boost business value by improving user workflows, data accuracy, and release velocity while demonstrating strong frontend engineering and testing capabilities.
May 2025
12 Commits • 2 Features
May 1, 2025May 2025 performance summary for NCI-GDC/gdc-frontend-framework: Delivered major Cohort Builder UX and data integrity enhancements, strengthened testing and QA tooling, and stabilized UI behavior to reduce regression risk. Highlights include static cohort creation on replacement, improved filtering and facet handling, range card UI improvements, validation for exact value filters, improved cohort replacement messaging, session expiration modal with mock server, reintroduction of test IDs for UI components, and fixes for duplicate string filters and UI edge cases. These changes boost business value by improving user workflows, data accuracy, and release velocity while demonstrating strong frontend engineering and testing capabilities.
April 2025
8 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary focusing on delivering core cohort UX improvements, Enclave Cohort Builder integration, and facet display refinements in NCI-GDC/gdc-frontend-framework. Key features delivered improved cohort save/activation UX, introduced first-pass Enclave Cohort Builder, and tightened facet labeling and definitions. A notable bug fix addressed facet counts rendering to prevent erroneous zero counts. The work demonstrates strong type safety, Tailwind-based UI styling, and hook-based actions, enabling clearer business workflows and reducing friction in cohort creation and activation, onboarding for enclave apps, and facet-driven filtering.
8 Commits • 3 Features
Apr 1, 2025April 2025 monthly summary focusing on delivering core cohort UX improvements, Enclave Cohort Builder integration, and facet display refinements in NCI-GDC/gdc-frontend-framework. Key features delivered improved cohort save/activation UX, introduced first-pass Enclave Cohort Builder, and tightened facet labeling and definitions. A notable bug fix addressed facet counts rendering to prevent erroneous zero counts. The work demonstrates strong type safety, Tailwind-based UI styling, and hook-based actions, enabling clearer business workflows and reducing friction in cohort creation and activation, onboarding for enclave apps, and facet-driven filtering.
April 2025
March 2025
5 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for NCI-GDC/gdc-frontend-framework focusing on delivering business value through Cohort Building Portal enhancements and Plot rendering/download improvements. Key refactors and feature implementations improved data querying, visualization reliability, and export performance. Also addressed critical image/download bugs to stabilize user workflows and reduce latency in visual exports.
March 2025
5 Commits • 2 Features
Mar 1, 2025March 2025 monthly summary for NCI-GDC/gdc-frontend-framework focusing on delivering business value through Cohort Building Portal enhancements and Plot rendering/download improvements. Key refactors and feature implementations improved data querying, visualization reliability, and export performance. Also addressed critical image/download bugs to stabilize user workflows and reduce latency in visual exports.
February 2025
5 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for NCI-GDC/gdc-frontend-framework focusing on delivering business-value features, stabilizing data retrieval, and hardening portal performance. Delivered cross-repo improvements with clear traceability to PEAR work items and ensured CSP compliance for critical UI banners.
5 Commits • 2 Features
Feb 1, 2025February 2025 monthly summary for NCI-GDC/gdc-frontend-framework focusing on delivering business-value features, stabilizing data retrieval, and hardening portal performance. Delivered cross-repo improvements with clear traceability to PEAR work items and ensured CSP compliance for critical UI banners.
February 2025
January 2025
4 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for NCI-GDC/gdc-frontend-framework focusing on business value and technical excellence. Delivered features and fixes across Cohort Builder and CNV analysis with a focus on UX, data accuracy, and stability. Key features delivered: - Cohort Builder Search Enhancements: Improved highlighting, scrolling, loading states, enum handling, and new upload facets to streamline cohort definition. Includes fixes to race conditions and loading behavior to improve stability and accuracy. Commits include d72480ef30a42d07a43f202666e9764a709c7de4, 07a3949a1c02c5eaf0f71ec640bf6728e61bebd1, and 32f58fee091e18087220de831553cf63ce2287c2 (PRs #1403, #1416, #1417). - Genes Table CNV Analysis Enhancements: Added Copy Number Variation categories Amplification and Homozygous Deletion; updates to GraphQL query, data interfaces, and filtering for more granular CNV insights in genes. Commit: 6ca30752fbfb5c65b0fb2acee5977b2130be9530 (PR #1421). Major bugs fixed: - Resolved race conditions affecting Cohort Builder search flow and improved loading behavior, reducing UI instability and stale results. Includes fixes to file history query usage and loader visibility when clearing search (PR #1417). Overall impact and accomplishments: - Significantly improved user experience and accuracy in cohort selection through enhanced search UX and robust data presentation for CNV analysis. - Strengthened frontend stability with targeted race-condition fixes and loading behavior improvements, resulting in faster, more reliable interactions for researchers and clinicians. - Enabled deeper biological insights with CNV category expansions and a more expressive data model, supporting more nuanced analyses and reporting. Technologies and skills demonstrated: - Frontend: React-based UI, advanced state management, UX instrumentation, and loading state handling. - Data layer: GraphQL query optimization and interface updates for CNV data. - Quality and process: focus on performance, reliability, and maintainability; alignment with product analytics and user workflows.
January 2025
4 Commits • 2 Features
Jan 1, 2025January 2025 monthly summary for NCI-GDC/gdc-frontend-framework focusing on business value and technical excellence. Delivered features and fixes across Cohort Builder and CNV analysis with a focus on UX, data accuracy, and stability. Key features delivered: - Cohort Builder Search Enhancements: Improved highlighting, scrolling, loading states, enum handling, and new upload facets to streamline cohort definition. Includes fixes to race conditions and loading behavior to improve stability and accuracy. Commits include d72480ef30a42d07a43f202666e9764a709c7de4, 07a3949a1c02c5eaf0f71ec640bf6728e61bebd1, and 32f58fee091e18087220de831553cf63ce2287c2 (PRs #1403, #1416, #1417). - Genes Table CNV Analysis Enhancements: Added Copy Number Variation categories Amplification and Homozygous Deletion; updates to GraphQL query, data interfaces, and filtering for more granular CNV insights in genes. Commit: 6ca30752fbfb5c65b0fb2acee5977b2130be9530 (PR #1421). Major bugs fixed: - Resolved race conditions affecting Cohort Builder search flow and improved loading behavior, reducing UI instability and stale results. Includes fixes to file history query usage and loader visibility when clearing search (PR #1417). Overall impact and accomplishments: - Significantly improved user experience and accuracy in cohort selection through enhanced search UX and robust data presentation for CNV analysis. - Strengthened frontend stability with targeted race-condition fixes and loading behavior improvements, resulting in faster, more reliable interactions for researchers and clinicians. - Enabled deeper biological insights with CNV category expansions and a more expressive data model, supporting more nuanced analyses and reporting. Technologies and skills demonstrated: - Frontend: React-based UI, advanced state management, UX instrumentation, and loading state handling. - Data layer: GraphQL query optimization and interface updates for CNV data. - Quality and process: focus on performance, reliability, and maintainability; alignment with product analytics and user workflows.
December 2024
4 Commits • 2 Features
Dec 1, 2024December 2024 highlights: Delivered critical frontend security hardening, established Enclave Portal foundations, and stabilized core search workflows to enhance reliability and business value. Focused on reducing security risk, enabling platform onboarding, and improving user-facing search performance across the frontend stack.
4 Commits • 2 Features
Dec 1, 2024December 2024 highlights: Delivered critical frontend security hardening, established Enclave Portal foundations, and stabilized core search workflows to enhance reliability and business value. Focused on reducing security risk, enabling platform onboarding, and improving user-facing search performance across the frontend stack.
December 2024
November 2024
1 Commits • 1 Features
Nov 1, 2024Month: 2024-11 — Key features delivered: Reusable Component Library Foundation. Created a dedicated workspace for shared resources to support a component library, including a footer component and initial build configurations to establish a foundation for reusable UI elements across the application. Commit reference: a02327617f35b9a884db1c3959e5b49eaeba623f (PEAR-2214: Create Workspace for Shared Resources, #1361). Major bugs fixed: None reported this month. Overall impact and accomplishments: Builds the foundation for a scalable, consistent UI across the frontend, enabling faster development cycles, reduced duplication, and improved cross-team collaboration. This lays groundwork for future component catalog expansion and UI consistency. Technologies/skills demonstrated: frontend monorepo/workspace setup, shared component architecture, build configuration, and Jira/PEAR-tracking alignment.
November 2024
1 Commits • 1 Features
Nov 1, 2024Month: 2024-11 — Key features delivered: Reusable Component Library Foundation. Created a dedicated workspace for shared resources to support a component library, including a footer component and initial build configurations to establish a foundation for reusable UI elements across the application. Commit reference: a02327617f35b9a884db1c3959e5b49eaeba623f (PEAR-2214: Create Workspace for Shared Resources, #1361). Major bugs fixed: None reported this month. Overall impact and accomplishments: Builds the foundation for a scalable, consistent UI across the frontend, enabling faster development cycles, reduced duplication, and improved cross-team collaboration. This lays groundwork for future component catalog expansion and UI consistency. Technologies/skills demonstrated: frontend monorepo/workspace setup, shared component architecture, build configuration, and Jira/PEAR-tracking alignment.
Activity
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Quality Metrics
Correctness88.2%
Maintainability84.8%
Architecture82.2%
Performance80.8%
AI Usage23.2%
Skills & Technologies
Programming Languages
CSSHTMLJSONJavaScriptReactSVGTypeScriptcsstsx
Technical Skills
API IntegrationBuild ConfigurationCI/CDCSSChart VisualizationCode RefactoringComponent ArchitectureComponent DevelopmentComponent LibraryComponent Library DevelopmentComponent RefactoringContent Security PolicyData FilteringData VisualizationDocker
Repositories Contributed To
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