creates detailed technical and commercial proposals for engineering projects, acting as a bridge between sales, engineering, and clients by analyzing requirements, estimating costs, developing scope, ensuring compliance, and collaborating cross-functionally to create accurate, competitive bids that meet customer needs and company goals. Key duties include reviewing RFPs, outlining project specs, coordinating with teams (sales, design, purchase), performing technical calculations, preparing cost estimates, and supporting the sales process from bid submission to negotiation.