Consulting Engineer Marketing Representative

Langendorf Supply is seeking a Consulting Engineer Marketing Representative to join our team in St. Louis, Missouri. This in-office, on-site position is responsible for building strong relationships with consulting and mechanical engineers, promoting our product lines, and supporting engineers as they design and specify commercial HVAC systems.

This role focuses on calling on engineering firms throughout the St. Louis market, conducting Lunch-N-Learns and office presentations, and serving as a knowledgeable resource on product application, selection, and benefits. The position is ideal for someone who is professional, self-motivated, and comfortable presenting technical information in a relationship-driven sales environment.

• Call on consulting and mechanical engineers in the St. Louis market.
• Develop and maintain strong relationships with engineering firms and key contacts.
• Schedule and conduct Lunch-N-Learns and office presentations featuring Langendorf product lines.
• Present product features, benefits, and applications in a clear and professional manner.
• Provide engineers with product information, selection guidance, and supporting materials.
• Assist with product specifications and respond to design-related questions.
• Track project opportunities and help position products early in the design phase.
• Coordinate with internal sales and support teams on engineer-driven opportunities.
• Maintain records of visits, presentations, and active opportunities.
• Stay current on HVAC products, applications, and market trends.

• 2+ years of experience in HVAC, technical sales, engineering support, mechanical systems, or a related field preferred.
• Familiarity with commercial HVAC equipment and system applications preferred.
• Strong presentation and relationship-building skills.
• Excellent verbal and written communication skills.
• Organized and self‑motivated with the ability to manage a schedule of visits and presentations.
• Comfortable using email, presentation software, and CRM or tracking tools.
• Engineering or technical background is a plus.

• St. Louis office
• In‑office, on‑site position
• Regular local travel to engineering firms and customer offices
• Occasional travel for trainings, meetings, or manufacturer events