
David Kekesi developed and enhanced cross-platform CAD/BIM connectors in the specklesystems/speckle-sharp-connectors repository, focusing on robust geometry processing, data extraction, and workflow automation. He implemented mesh triangulation and extrusion features for Tekla, introduced per-layer filtering for Rhino, and improved Revit integration by adding error handling and fallback logic for geometry conversion. Using C#, the Revit and Rhino APIs, and advanced data cleaning techniques, David addressed interoperability challenges and increased data fidelity across AutoCAD, Civil3D, Revit, Rhino, and Tekla. His work demonstrated depth in connector development, dependency management, and plugin architecture, resulting in more reliable, maintainable, and user-focused BIM workflows.

In July 2025, delivered robustness improvements and data extraction enhancements for speckle-sharp-connectors. Fixed Rhino import errors by introducing RhinoUtils to sanitize invalid characters in block definitions and layer names, reducing import failures and improving Rhino compatibility. Enhanced MEP data extraction by extending ParameterExtractor to include system type parameters and implementing caching to speed retrieval and improve completeness for Revit elements. These changes improve data quality and reliability, supporting better decision-making and faster integration pipelines.
In July 2025, delivered robustness improvements and data extraction enhancements for speckle-sharp-connectors. Fixed Rhino import errors by introducing RhinoUtils to sanitize invalid characters in block definitions and layer names, reducing import failures and improving Rhino compatibility. Enhanced MEP data extraction by extending ParameterExtractor to include system type parameters and implementing caching to speed retrieval and improve completeness for Revit elements. These changes improve data quality and reliability, supporting better decision-making and faster integration pipelines.
June 2025 monthly summary for specklesystems/speckle-sharp-connectors. Focused on delivering cross-CAD/BIM interoperability improvements with data fidelity enhancements and user-centric receive workflows across AutoCAD, Civil3D, Revit, Rhino, and Tekla connectors. The work resulted in clearer alignment of text converters, improved property extraction fidelity, enhanced Revit receive reference points, branding updates, and stability improvements through PaletteSet GUID updates. These changes reduce manual data correction, increase automation reliability, and enable smoother BIM workflows for architecture, engineering, and construction teams.
June 2025 monthly summary for specklesystems/speckle-sharp-connectors. Focused on delivering cross-CAD/BIM interoperability improvements with data fidelity enhancements and user-centric receive workflows across AutoCAD, Civil3D, Revit, Rhino, and Tekla connectors. The work resulted in clearer alignment of text converters, improved property extraction fidelity, enhanced Revit receive reference points, branding updates, and stability improvements through PaletteSet GUID updates. These changes reduce manual data correction, increase automation reliability, and enable smoother BIM workflows for architecture, engineering, and construction teams.
May 2025 performance snapshot: - Key features delivered: - Revit geometry conversion robustness: implemented guard rails to reject non-conformal transformations and guard scale creation, reducing invalid conversions and preventing downstream errors in the Revit integration. - NURBS spline conversion fallback for Revit curves: added a fallback path that uses displayValue to build a HermiteSpline when NurbSpline.CreateCurve fails, improving reliability for semicircles and related curves. - Improve Revit object tracking on view visibility changes: enhanced tracking to include the view ID so that hiding/unhiding categories triggers correct updates. - Speckle (Legacy) branding update: rebranded Archicad connector UI/resources to Speckle (Legacy) to clarify versioning and reduce user confusion. - Remove ArcGIS and QGIS connectors from dashboard: deprecated/unlisted ArcGIS and QGIS connectors to reduce maintenance surface. - Major bugs fixed: - Skip converting breps/meshes with skew transforms in Revit path to prevent invalid geometry conversions (#801). - Guard against exceptions during Revit transform scale creation, avoiding crashes in geometry processing (#860). - Hermite Spline conversion fix when NURBS conversion fails (#843). - Overall impact and accomplishments: - Increased reliability and data fidelity in Revit-based workflows, leading to fewer failed exports and better downstream data quality; streamlined user experience by clarifying connector status and reducing supported options. - Technologies/skills demonstrated: - Revit API and geometry processing (BRep, NURBS, HermiteSpline), error handling, and robustness for 3D geometry translation; UI/UX branding work; connector lifecycle maintenance and deprecation.
May 2025 performance snapshot: - Key features delivered: - Revit geometry conversion robustness: implemented guard rails to reject non-conformal transformations and guard scale creation, reducing invalid conversions and preventing downstream errors in the Revit integration. - NURBS spline conversion fallback for Revit curves: added a fallback path that uses displayValue to build a HermiteSpline when NurbSpline.CreateCurve fails, improving reliability for semicircles and related curves. - Improve Revit object tracking on view visibility changes: enhanced tracking to include the view ID so that hiding/unhiding categories triggers correct updates. - Speckle (Legacy) branding update: rebranded Archicad connector UI/resources to Speckle (Legacy) to clarify versioning and reduce user confusion. - Remove ArcGIS and QGIS connectors from dashboard: deprecated/unlisted ArcGIS and QGIS connectors to reduce maintenance surface. - Major bugs fixed: - Skip converting breps/meshes with skew transforms in Revit path to prevent invalid geometry conversions (#801). - Guard against exceptions during Revit transform scale creation, avoiding crashes in geometry processing (#860). - Hermite Spline conversion fix when NURBS conversion fails (#843). - Overall impact and accomplishments: - Increased reliability and data fidelity in Revit-based workflows, leading to fewer failed exports and better downstream data quality; streamlined user experience by clarifying connector status and reducing supported options. - Technologies/skills demonstrated: - Revit API and geometry processing (BRep, NURBS, HermiteSpline), error handling, and robustness for 3D geometry translation; UI/UX branding work; connector lifecycle maintenance and deprecation.
April 2025 Monthly Summary: Delivered a new per-layer filtering capability for Rhino Speckle sends within the Speckle Sharp Connectors, enabling users to select specific Rhino layers to include in data sends. Implemented a new RhinoLayersFilter class and integrated it into the RhinoSendBinding, enabling precise data selection and smaller payloads. The change is tracked by commit e4f1ef856461573510870733b019921c0e3ed1ca (Feat(rhino): send filter for layers (#728)).
April 2025 Monthly Summary: Delivered a new per-layer filtering capability for Rhino Speckle sends within the Speckle Sharp Connectors, enabling users to select specific Rhino layers to include in data sends. Implemented a new RhinoLayersFilter class and integrated it into the RhinoSendBinding, enabling precise data selection and smaller payloads. The change is tracked by commit e4f1ef856461573510870733b019921c0e3ed1ca (Feat(rhino): send filter for layers (#728)).
February 2025 monthly summary for specklesystems/speckle-sharp-connectors focusing on Tekla Speckle integration mesh generation. Delivered a feature to extrude simple holed Tekla solids into Speckle meshes by identifying opposing faces with holes and using a mesh generator to create extruded geometry; includes utility functions for polygon manipulation and distance calculations. Migrated mesh triangulation from TriangleNet to LibTessDotNet, updating MeshGenerator to LibTessTriangulator and aligning dependencies. Addressed migration-related stability and dependency issues to keep the connector reliable.
February 2025 monthly summary for specklesystems/speckle-sharp-connectors focusing on Tekla Speckle integration mesh generation. Delivered a feature to extrude simple holed Tekla solids into Speckle meshes by identifying opposing faces with holes and using a mesh generator to create extruded geometry; includes utility functions for polygon manipulation and distance calculations. Migrated mesh triangulation from TriangleNet to LibTessDotNet, updating MeshGenerator to LibTessTriangulator and aligning dependencies. Addressed migration-related stability and dependency issues to keep the connector reliable.
January 2025 monthly summary for specklesystems/speckle-sharp-connectors. Key features delivered: Mesh Triangulation for Polygon Surfaces; introduced a new mesh generation capability to triangulate 2D and 3D surfaces from polygon inputs, added a new mesh triangulation project, and integrated into Tekla converters with logic for handling polygon vertex order and clarifying comments. Major bugs fixed: None reported for this month. Overall impact and accomplishments: Enables automated, accurate mesh generation workflows within Tekla-based pipelines, improving modeling fidelity and reducing manual intervention. Demonstrated technologies/skills: C# development, mesh generation algorithms, polygon geometry handling, integration with Tekla converters, and codebase maintainability through enhanced comments.
January 2025 monthly summary for specklesystems/speckle-sharp-connectors. Key features delivered: Mesh Triangulation for Polygon Surfaces; introduced a new mesh generation capability to triangulate 2D and 3D surfaces from polygon inputs, added a new mesh triangulation project, and integrated into Tekla converters with logic for handling polygon vertex order and clarifying comments. Major bugs fixed: None reported for this month. Overall impact and accomplishments: Enables automated, accurate mesh generation workflows within Tekla-based pipelines, improving modeling fidelity and reducing manual intervention. Demonstrated technologies/skills: C# development, mesh generation algorithms, polygon geometry handling, integration with Tekla converters, and codebase maintainability through enhanced comments.
Overview of all repositories you've contributed to across your timeline