CAD Plug In Developer

Department: IT

Employment Type: Full Time

Location: Remote, Remote- USA, Remote

Key Responsibilities

• Build the plugins. Design, build and ship production plugins for AutoCAD / Civil 3D (.NET, ObjectARX) and MicroStation / OpenX Designer SDKs (.NET and native SDKs). 
• Own the export path. Build the end-to-end flow from a click in the plugin to the platform: sign-in through the platform (OAuth 2.0 / OpenID Connect from a desktop app, with tokens that persist between sessions), packaging the design, upload through platform APIs, and handling partial failures and retries. 
• Build the import path. Let users browse designs by project, pick files and download them into the CAD session through secure, time-limited download links. 
• Get the data right. Extract and convert civil objects (alignments, profiles, corridors, surfaces, pipe networks, feature lines) and their coordinate systems into open formats such as LandXML, IFC and GeoJSON, without losing data. 
• Connect to GIS. Build ArcGIS Pro add-ins and integrations that sync CAD spatial data with ArcGIS, including styles, spatial reference files and OGC-standard services. 
• Fit the designer’s workflow. Sit with civil designers, watch how they work in a session, and shape when and how the plugin asks for their attention. Validate output against real projects before it ships. 
• Instrument what you ship. Add usage and error events to the plugins so we can see how export and import perform in the field. 
• Package and support. Own installers, code signing, versioning across yearly Autodesk and Bentley releases, and deployment to engineers’ machines. 
• Partner with platform engineers. Work with the platform team on the REST and GraphQL APIs and the storage the plugins call, and on any third-party service integrations the plugins depend on. 
• Lead technically. Set plugin architecture and coding standards, review code, and mentor other developers on CAD and GIS APIs. 

Skills, Knowledge and Expertise

• 6+ years of professional software development, with at least 4 years building and shipping CAD plugins or extensions used in production.
• Strong C# and .NET, and working C/C++ for native CAD APIs.
• Deep experience with the AutoCAD and Civil 3D APIs; hands-on experience with the MicroStation SDK or one or more of the Bentley OpenX Designer SDKs (OpenRoads, OpenRail, OpenSite, OpenComms).
• Working knowledge of civil design workflows and processes: how roadway, drainage, grading or site designers move from survey to model to plan set, what they reuse across projects, and where the time goes.
• Experience calling REST and GraphQL APIs from desktop applications, including OAuth 2.0 / OpenID Connect sign-in and secure token storage.
• Experience with coordinate systems, map projections and spatial data formats (LandXML, GeoJSON, shapefiles, geodatabases).
• ArcGIS Pro SDK, ArcGIS REST APIs, Arcade, or QGIS development. 
• PostgreSQL / PostGIS or other spatial databases. 

About Trilon