CAD Plug In Developer

This is a fully remote position, open to applicants in United States.

📋 Description

• Design, develop, and deploy production plugins for AutoCAD / Civil 3D utilizing .NET and ObjectARX, as well as for MicroStation / OpenX Designer using .NET and native SDKs.

• Create comprehensive export workflows from desktop plugin login to platform upload, incorporating OAuth 2.0 / OpenID Connect, token persistence, packaging, handling of partial failures, and retries.

• Develop import workflows that allow users to navigate designs by project, select files, and download them into CAD sessions via secure, time-sensitive links.

• Extract and transform civil objects such as alignments, profiles, corridors, surfaces, pipe networks, and feature lines into LandXML, IFC, and GeoJSON while maintaining data integrity.

• Create ArcGIS Pro add-ins and integrations that synchronize CAD spatial data with ArcGIS, including styles, spatial reference files, and OGC-standard services.

• Monitor civil designers' workflows and tailor plugin interactions to meet their requirements; validate output against real-world projects.

• Implement usage and error tracking in plugins.

• Manage installers, code signing, versioning across Autodesk and Bentley releases, and deployment to engineers' workstations.

• Collaborate with platform engineers on REST and GraphQL APIs, storage solutions, and third-party service integrations.

• Establish plugin architecture and coding standards, conduct code reviews, and mentor developers on CAD and GIS APIs.

⛳️ Requirements

• A minimum of 6 years of professional software development experience, including at least 4 years dedicated to building and deploying CAD plugins or extensions that are actively used in production.

• Proficient in C# and .NET, with working knowledge of C/C++ for native CAD APIs.

• Extensive experience with the AutoCAD and Civil 3D APIs.

• Practical experience with the MicroStation SDK or one or more of the Bentley OpenX Designer SDKs (OpenRoads, OpenRail, OpenSite, OpenComms).

• Familiarity with civil design workflows and processes, including roadway, drainage, grading, or site design methodologies.

• Experience in invoking REST and GraphQL APIs from desktop applications, including OAuth 2.0 / OpenID Connect authentication and secure token management.

• Knowledge of coordinate systems, map projections, and spatial data formats (LandXML, GeoJSON, shapefiles, geodatabases).

• Experience with ArcGIS Pro SDK, ArcGIS REST APIs, Arcade, or QGIS development.

• Proficiency in PostgreSQL / PostGIS or other spatial database systems.

🏝️ Benefits

• Trilon was established with the goal of becoming one of the Top 20 infrastructure consulting firms in North America by uniting some of the nation’s leading infrastructure consulting companies, with a focus on delivering practical and sustainable infrastructure solutions.

• Trilon is supported by Alpine Investors, a PeopleFirst Private Equity Firm.

• Trilon currently employs over 5,500 staff across the United States.