
Over 15 months, Horis Vdovidaytis engineered core features and release infrastructure for JetBrains/lets-plot, focusing on cross-platform data visualization and robust packaging. He delivered major plotting upgrades, interactive UI enhancements, and expanded Python compatibility, while unifying build automation and release workflows using Kotlin, Python, and Gradle. Horis streamlined artifact publishing by migrating to Sonatype Central with custom OkHttp integration, improved CI reliability, and standardized versioning across languages. His work included dependency management, Docker-based build scripting, and documentation updates, resulting in reproducible builds and faster onboarding. The depth of his contributions ensured stable releases and improved usability for both developers and end users.

Monthly summary for 2026-01 focused on stabilizing packaging and expanding Python compatibility for JetBrains/lets-plot. Key actions included aligning packaging paths with Kotlin Webpack outputs, standardizing environment variable naming to reduce misconfiguration, and adding Python 3.14 support to the project. These changes enhance packaging reliability, developer clarity, and forward compatibility with Python ecosystems.
Monthly summary for 2026-01 focused on stabilizing packaging and expanding Python compatibility for JetBrains/lets-plot. Key actions included aligning packaging paths with Kotlin Webpack outputs, standardizing environment variable naming to reduce misconfiguration, and adding Python 3.14 support to the project. These changes enhance packaging reliability, developer clarity, and forward compatibility with Python ecosystems.
Monthly performance summary for 2025-12 (JetBrains/lets-plot). Focused on delivering high-value features, stabilizing the development/CI environment, and improving documentation. Key work targeted plotting performance, release management, dependency stability, and user-facing changelog updates.
Monthly performance summary for 2025-12 (JetBrains/lets-plot). Focused on delivering high-value features, stabilizing the development/CI environment, and improving documentation. Key work targeted plotting performance, release management, dependency stability, and user-facing changelog updates.
In 2025-11, contributed to JetBrains/lets-plot focusing on feature delivery and release hygiene. Delivered a major library update (4.8.0) with new geometries, plot layout features, and theme enhancements, accompanied by user-facing documentation. Implemented structured internal release versioning and metadata updates to support ongoing development (pre-release and development builds: 4.8.1.dev1, 4.8.1rc1, 4.8.2.dev1). No documented user-facing bug fixes for this period; emphasis was placed on delivering business value through feature improvements and robust release processes.
In 2025-11, contributed to JetBrains/lets-plot focusing on feature delivery and release hygiene. Delivered a major library update (4.8.0) with new geometries, plot layout features, and theme enhancements, accompanied by user-facing documentation. Implemented structured internal release versioning and metadata updates to support ongoing development (pre-release and development builds: 4.8.1.dev1, 4.8.1rc1, 4.8.2.dev1). No documented user-facing bug fixes for this period; emphasis was placed on delivering business value through feature improvements and robust release processes.
Month: 2025-10 — Focused on release engineering improvements for JetBrains/lets-plot. Implemented Release Version Bump Synchronization to align version numbers across build configuration, distribution, and packaging, ensuring the RC and development versions reflect the current state of release. This reduces drift between artifacts and speeds up release readiness. Commits included: dd5dbd73cbb1208c7e91207414465f95009c8326 (Updated version v4.8.0rc1) and 549733bbd49c166729f42674812e0be152794d57 (Updated version v4.8.1.dev1).
Month: 2025-10 — Focused on release engineering improvements for JetBrains/lets-plot. Implemented Release Version Bump Synchronization to align version numbers across build configuration, distribution, and packaging, ensuring the RC and development versions reflect the current state of release. This reduces drift between artifacts and speeds up release readiness. Commits included: dd5dbd73cbb1208c7e91207414465f95009c8326 (Updated version v4.8.0rc1) and 549733bbd49c166729f42674812e0be152794d57 (Updated version v4.8.1.dev1).
Month: 2025-09. Focused on enhancing plotting export quality and ensuring release readiness for JetBrains/lets-plot. Key work included plot export enhancements with layout controls, PNG metadata for image resolution, and backend export improvements; plus release hygiene via internal version bumps for upcoming development builds (4.7.3.dev1 and 4.7.4.dev1).
Month: 2025-09. Focused on enhancing plotting export quality and ensuring release readiness for JetBrains/lets-plot. Key work included plot export enhancements with layout controls, PNG metadata for image resolution, and backend export improvements; plus release hygiene via internal version bumps for upcoming development builds (4.7.3.dev1 and 4.7.4.dev1).
August 2025: Delivered core release-management improvements and plotting stability enhancements for JetBrains/lets-plot. Consolidated 4.7.x versioning and release metadata (RC and SNAPSHOT development) to improve release planning and traceability, implemented reproducible build environment updates (ImageMagick/MSYS2), and refined plotting UX in the 4.7.1 release with fixes to ggsave, facet_wrap, geoms, tooltips, and coordinates. These efforts reduce release risk, speed up iteration, and improve end-user plotting reliability.
August 2025: Delivered core release-management improvements and plotting stability enhancements for JetBrains/lets-plot. Consolidated 4.7.x versioning and release metadata (RC and SNAPSHOT development) to improve release planning and traceability, implemented reproducible build environment updates (ImageMagick/MSYS2), and refined plotting UX in the 4.7.1 release with fixes to ggsave, facet_wrap, geoms, tooltips, and coordinates. These efforts reduce release risk, speed up iteration, and improve end-user plotting reliability.
July 2025 delivered substantial cross-repo improvements for JetBrains/lets-plot and lets-plot-kotlin, focusing on test reliability, build stability, and release readiness. Key outcomes include expanded test dependencies, cross-platform test data alignment, a streamlined ImageMagick build, targeted bug fixes, and a refreshed release and publishing flow that supports faster, more compliant releases. These efforts improve CI stability, platform coverage, and time-to-market for new features and fixes.
July 2025 delivered substantial cross-repo improvements for JetBrains/lets-plot and lets-plot-kotlin, focusing on test reliability, build stability, and release readiness. Key outcomes include expanded test dependencies, cross-platform test data alignment, a streamlined ImageMagick build, targeted bug fixes, and a refreshed release and publishing flow that supports faster, more compliant releases. These efforts improve CI stability, platform coverage, and time-to-market for new features and fixes.
June 2025 monthly summary for JetBrains/lets-plot focusing on publishing workflow overhaul and quality improvements. Delivered centralized publishing to Sonatype Central, migrated from deprecated Gradle Nexus plugin to a custom OkHttp-based uploader, introduced separate SNAPSHOT and release URLs, and scoped credentials to SNAPSHOT publications. Release docs and build scripts were updated accordingly. These changes improve release reliability, security, and compliance, enabling faster and safer deployments.
June 2025 monthly summary for JetBrains/lets-plot focusing on publishing workflow overhaul and quality improvements. Delivered centralized publishing to Sonatype Central, migrated from deprecated Gradle Nexus plugin to a custom OkHttp-based uploader, introduced separate SNAPSHOT and release URLs, and scoped credentials to SNAPSHOT publications. Release docs and build scripts were updated accordingly. These changes improve release reliability, security, and compliance, enabling faster and safer deployments.
Month 2025-05 — JetBrains/lets-plot: Focused upgrade to Python 3.9 as the minimum supported version, aligning docs, release notes, example configurations, and setup files; removed Python 3.8 support to simplify maintenance and enable newer tooling. No major bugs fixed this month; effort centered on platform readiness and documentation updates.
Month 2025-05 — JetBrains/lets-plot: Focused upgrade to Python 3.9 as the minimum supported version, aligning docs, release notes, example configurations, and setup files; removed Python 3.8 support to simplify maintenance and enable newer tooling. No major bugs fixed this month; effort centered on platform readiness and documentation updates.
March 2025: JetBrains/lets-plot delivered a major 4.6.0 feature set, began 4.6.x maintenance improvements, and strengthened cross‑platform reliability (macOS) while advancing release engineering and documentation. The work enhances visualization capabilities, improves label/layout behavior, and ensures build stability in macOS environments, delivering concrete business value to adopters and enterprise users.
March 2025: JetBrains/lets-plot delivered a major 4.6.0 feature set, began 4.6.x maintenance improvements, and strengthened cross‑platform reliability (macOS) while advancing release engineering and documentation. The work enhances visualization capabilities, improves label/layout behavior, and ensures build stability in macOS environments, delivering concrete business value to adopters and enterprise users.
Concise monthly summary for JetBrains/lets-plot (Feb 2025) focusing on release versioning and packaging alignment across Gradle and Python.
Concise monthly summary for JetBrains/lets-plot (Feb 2025) focusing on release versioning and packaging alignment across Gradle and Python.
January 2025 monthly summary for JetBrains/lets-plot focusing on build system enhancements and documentation. Key features delivered include artifact naming standardization for packaging and publishing, automation of multi-arch manylinux wheel builds, and targeted documentation improvements across build/release workflows. No major bugs reported or fixed this month. Overall impact: improved artifact consistency, cross-platform packaging readiness, and streamlined developer onboarding. Technologies and skills demonstrated include Python scripting for build automation, shell scripting, Docker/manylinux workflows, and clear, contributor-friendly documentation practices.
January 2025 monthly summary for JetBrains/lets-plot focusing on build system enhancements and documentation. Key features delivered include artifact naming standardization for packaging and publishing, automation of multi-arch manylinux wheel builds, and targeted documentation improvements across build/release workflows. No major bugs reported or fixed this month. Overall impact: improved artifact consistency, cross-platform packaging readiness, and streamlined developer onboarding. Technologies and skills demonstrated include Python scripting for build automation, shell scripting, Docker/manylinux workflows, and clear, contributor-friendly documentation practices.
December 2024 performance summary for JetBrains/lets-plot: Key user-facing improvements to the Plot UI and rendering, stabilized build and release processes, and fixed Windows packaging to improve cross-platform reliability. The work focused on delivering business value through better visualization, more robust releases, and stronger platform support.
December 2024 performance summary for JetBrains/lets-plot: Key user-facing improvements to the Plot UI and rendering, stabilized build and release processes, and fixed Windows packaging to improve cross-platform reliability. The work focused on delivering business value through better visualization, more robust releases, and stronger platform support.
November 2024 performance summary for JetBrains/lets-plot: Delivered release process and packaging/versioning improvements that unify multi-language build and release workflows. Key outcomes include: MacOS Python package build fixes by removing static Darwin linking; synchronized versioning between Gradle and Python packaging to support alpha and SNAPSHOT cycles; updated lets-plot library references and prepared alpha releases (v4.5.2alpha2, v4.5.2.dev1). This work reduces release risk, improves artifact traceability, and accelerates onboarding for early adopters. The initiative consolidated release steps and refactored packaging to enable reliable alpha releases across components.
November 2024 performance summary for JetBrains/lets-plot: Delivered release process and packaging/versioning improvements that unify multi-language build and release workflows. Key outcomes include: MacOS Python package build fixes by removing static Darwin linking; synchronized versioning between Gradle and Python packaging to support alpha and SNAPSHOT cycles; updated lets-plot library references and prepared alpha releases (v4.5.2alpha2, v4.5.2.dev1). This work reduces release risk, improves artifact traceability, and accelerates onboarding for early adopters. The initiative consolidated release steps and refactored packaging to enable reliable alpha releases across components.
October 2024: Led the Lets-Plot 4.5.0 release for JetBrains, delivering a major interactive plotting upgrade and cross-language support, along with comprehensive docs. Early 4.5.x development progressed with version bumps and UX refinements to improve stability and user experience. These efforts anchored business value by enabling richer visual analytics, faster adoption, and broader Python compatibility.
October 2024: Led the Lets-Plot 4.5.0 release for JetBrains, delivering a major interactive plotting upgrade and cross-language support, along with comprehensive docs. Early 4.5.x development progressed with version bumps and UX refinements to improve stability and user experience. These efforts anchored business value by enabling richer visual analytics, faster adoption, and broader Python compatibility.
Overview of all repositories you've contributed to across your timeline