A Sales Engineer (also called a Solutions Engineer or Pre-Sales Engineer) is a technical specialist who partners with AEs during the sales process to handle complex product demonstrations, technical evaluations, proof-of-concept implementations, and security reviews. SEs bridge the gap between the prospect's technical requirements and the product's capabilities. In enterprise sales, the SE's ability to build credibility with the prospect's technical stakeholders is often as important to winning deals as the AE's commercial skill.