epam/ketcher
Nov 2024 – Jan 2026
7 Months active
Languages Used
PNGTypeScriptJavaScript
Technical Skills
Back-end DevelopmentSoftware TestingTestingChemical Drawing SoftwareFront End DevelopmentFront-end Development
aproskurnov
PROFILE
Aproskurnov
Over seven months, Proskurn contributed to the epam/ketcher repository, focusing on chemical drawing and macromolecule editing workflows. He developed and refined features such as chain construction tools, antisense handling, and canvas-based selection, using JavaScript, TypeScript, and React. His work addressed complex UI and state management challenges, including stabilizing functional group drawing settings and improving multi-instance reliability. By implementing targeted bug fixes for molecule rendering, chain ordering, and context menu behavior, he enhanced both user experience and application robustness. Proskurn’s engineering demonstrated depth in algorithm design, UI/UX refinement, and test-driven development, supporting researchers and educators in chemistry software.
Overall Statistics
Feature vs Bugs
45%Features
Repository Contributions
13Total
Bugs
6
Commits
13
Features
5
Lines of code
1,418
Activity Months7
Your Network
29 peopleWork History
January 2026
3 Commits • 1 Features
Jan 1, 2026January 2026: Canvas-based selection improvements and Macromolecules mode stabilization delivered for epam/ketcher, delivering measurable UX and reliability gains for diagram editing workflows. Implemented canvas coordinate-based selection and improved rectangle selection UX; resolved molecule handling issues across multiple monomers and ensured persistence when switching to Macromolecules mode. Builds stabilized and code clarity improvements contributed to long-term maintainability.
3 Commits • 1 Features
Jan 1, 2026January 2026: Canvas-based selection improvements and Macromolecules mode stabilization delivered for epam/ketcher, delivering measurable UX and reliability gains for diagram editing workflows. Implemented canvas coordinate-based selection and improved rectangle selection UX; resolved molecule handling issues across multiple monomers and ensured persistence when switching to Macromolecules mode. Builds stabilized and code clarity improvements contributed to long-term maintainability.
January 2026
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025: Macro-mode canvas improvements with micromolecule clearing and a robustness fix for bond selection, delivering tangible business value through improved stability and user workflow.
December 2025
2 Commits • 1 Features
Dec 1, 2025December 2025: Macro-mode canvas improvements with micromolecule clearing and a robustness fix for bond selection, delivering tangible business value through improved stability and user workflow.
June 2025
2 Commits
Jun 1, 2025June 2025 monthly summary for epam/ketcher focused on stability and correct UI behavior across multiple Ketcher instances. Delivered two bug fixes addressing context menu positioning and multi-instance initialization stability, including a revert of a Playwright update to preserve CI/test reliability. These changes improve cross-instance correctness, reduce user confusion, and enhance maintainability.
2 Commits
Jun 1, 2025June 2025 monthly summary for epam/ketcher focused on stability and correct UI behavior across multiple Ketcher instances. Delivered two bug fixes addressing context menu positioning and multi-instance initialization stability, including a revert of a Playwright update to preserve CI/test reliability. These changes improve cross-instance correctness, reduce user confusion, and enhance maintainability.
June 2025
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025: Delivered UI refinement in epam/ketcher by removing the base monomer border after selection and cleaning up the MONOMER_SYMBOLS_IDS map. This reduces visual clutter, simplifies state management, and prepares the codebase for future UI improvements.
March 2025
1 Commits • 1 Features
Mar 1, 2025March 2025: Delivered UI refinement in epam/ketcher by removing the base monomer border after selection and cleaning up the MONOMER_SYMBOLS_IDS map. This reduces visual clutter, simplifies state management, and prepares the codebase for future UI improvements.
February 2025
1 Commits
Feb 1, 2025February 2025 (Month: 2025-02) - Focused on stabilizing macromolecule editing workflows in epam/ketcher. Delivered a bug fix for macromolecule chain ordering and RNA complementarity, including a new chain-reordering method based on antisense connections and refined RNA monomer complementary detection to improve layout accuracy. Implemented a backmerge to address a two-sense-to-antisense connection order issue, ensuring consistent behavior and preventing regressions. Result: more reliable editing, improved layout accuracy, and reduced user-reported edge cases, supporting researchers and educators in macromolecule workflow tasks.
1 Commits
Feb 1, 2025February 2025 (Month: 2025-02) - Focused on stabilizing macromolecule editing workflows in epam/ketcher. Delivered a bug fix for macromolecule chain ordering and RNA complementarity, including a new chain-reordering method based on antisense connections and refined RNA monomer complementary detection to improve layout accuracy. Implemented a backmerge to address a two-sense-to-antisense connection order issue, ensuring consistent behavior and preventing regressions. Result: more reliable editing, improved layout accuracy, and reduced user-reported edge cases, supporting researchers and educators in macromolecule workflow tasks.
February 2025
January 2025
3 Commits • 2 Features
Jan 1, 2025January 2025: Delivered two core features in epam/ketcher that enhance chain construction and macromolecule editing with improved accuracy and usability. The Chain tool now labels the last atom during chain creation, improving tracking and reducing misassembly. In the Macromolecule editor, antisense handling and rendering were refined: antisense option is disabled when an antisenseless base is present; rendering for sense/antisense chains was refactored; backbone connections corrected; snake mode remains stable after reinitialization; screenshots updated. These changes improve user confidence, reduce errors, and enable researchers to construct and analyze macromolecules more efficiently. Key commits anchored the work: f2850c027d615019d41afbec6180f5a9dca96ffd; b393f7dfcf5a7d81fc73b949dfca11d826f8da20; 721604463e45f6ad90adcfdf1051cd861f38247a.
January 2025
3 Commits • 2 Features
Jan 1, 2025January 2025: Delivered two core features in epam/ketcher that enhance chain construction and macromolecule editing with improved accuracy and usability. The Chain tool now labels the last atom during chain creation, improving tracking and reducing misassembly. In the Macromolecule editor, antisense handling and rendering were refined: antisense option is disabled when an antisenseless base is present; rendering for sense/antisense chains was refactored; backbone connections corrected; snake mode remains stable after reinitialization; screenshots updated. These changes improve user confidence, reduce errors, and enable researchers to construct and analyze macromolecules more efficiently. Key commits anchored the work: f2850c027d615019d41afbec6180f5a9dca96ffd; b393f7dfcf5a7d81fc73b949dfca11d826f8da20; 721604463e45f6ad90adcfdf1051cd861f38247a.
November 2024
1 Commits
Nov 1, 2024November 2024 monthly summary for epam/ketcher: Focused stabilization of Functional Group Drawing Settings across micromolecules and macromolecules, with targeted test coverage improvements and fixes for import-related issues. Completed a backmerge to apply functional group drawing settings (#5883), aligning related changes and mitigating branch drift. Resulted in more reliable molecule rendering, fewer test/import failures, and a smoother user workflow for chemistry researchers.
1 Commits
Nov 1, 2024November 2024 monthly summary for epam/ketcher: Focused stabilization of Functional Group Drawing Settings across micromolecules and macromolecules, with targeted test coverage improvements and fixes for import-related issues. Completed a backmerge to apply functional group drawing settings (#5883), aligning related changes and mitigating branch drift. Resulted in more reliable molecule rendering, fewer test/import failures, and a smoother user workflow for chemistry researchers.
November 2024
Activity
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Quality Metrics
Correctness85.4%
Maintainability82.4%
Architecture78.4%
Performance75.4%
AI Usage23.0%
Skills & Technologies
Programming Languages
JavaScriptPNGTypeScript
Technical Skills
Algorithm DesignBack-end DevelopmentChemical Drawing SoftwareFront End DevelopmentFront-end DevelopmentJavaScriptMacromolecule EditingMacromolecule EditorReactSoftware TestingState ManagementTestingTypeScriptUI DevelopmentUI/UX Refinement
Repositories Contributed To
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