We are seeking an experienced Siemens NX automation specialist to develop a rule-driven parametric 3D model and reusable library for an EOT crane. The solution must allow an external backend to pass engineering parameters into Siemens NX using Python (NX Open API) and automatically generate 3D models and 2D drawings. Scope of Work 1. Parametric NX Model Develop a fully parametric NX assembly for an EOT crane Geometry driven by expressions such as capacity, span, height of lift, duty class, and deflection Model must regenerate reliably for multiple variants 2. Rule-Based Logic Implement engineering rules using: NX Expressions NX Knowledge / checks 3. Parametric Library Creation (Mandatory) Create a reusable NX library including: Parametric girder sections End carriage modules Common crane sub-assemblies Library requirements: Fully parameter-driven components Standardized naming and expressions Designed for automation and reuse 4. NX Open Automation (Python Only) Use NX Open API with Python to: Accept parameters from an external backend Update NX expressions Regenerate the 3D model automatically Scripted or batch execution required 5. 2D Drawing Automation Generate basic NX drafting drawings Drawings must update automatically when model parameters change Deliverables Parametric NX assemblies and part files Structured parametric NX component library NX expressions and rule definitions Python automation scripts using NX Open Brief documentation explaining parameters, rules, library structure, and automation workflow Mandatory Skills Siemens NX (advanced level) NX parametric modeling and expressions NX Knowledge / rule-based design NX Open API using Python Experience creating reusable parametric NX libraries Mechanical design experience with industrial equipment or structures