销售工程（英语：Sales engineering），混合了销售与工程学而形成的领域，存在于许多任务业与商品市场中。在一些特定市场中，消费者及厂商在进行购买时，注意的不只是外形、风格与价格，而更注意其技术特性，因此在进行销售时，需要以工程技术来说服消费者进行购买，并为顾客特制化部份工能。负责销售工程的人员，称为消售工程师（sales engineer），也被称为系统工程师（Systems Engineer）、消费者工程师（Customer Engineer）、顾问（consultant）、技术经理（Technical Account Manager）或现场应用工程师（Field Applications Engineer，FAE）。他们的角色介于业务人员、顾问与工程师之间，在销售前及销售后，他们为顾客提供咨询，了解顾客的使用环境及需求，提出解决方案，并解决顾客在应用上的疑难，以完成销售的任务。

Sales engineering is a hybrid of sales and engineering that exists in industrial and commercial markets. Buying decisions in these markets are made differently than those in many consumer contexts, being based more on technical information and rational analysis and less on style, fashion, or impulse. Therefore, selling in these markets cannot depend on consumer-type sales methods alone, and instead it relies heavily on technical information and problem-solving to convince buyers that they should spend money on the seller's products or services, in order to meet a business need (that is, to satisfy a business case). A sales engineer is thus both "a salesperson that understands and can apply engineering" and "an engineer that understands how to sell engineered systems". They thus not only sell but also provide advice and support. They provide this service to various internal or external customers, and they may work for a manufacturer (servicing its industrial-account/business-to-business customers), for a distributor (which in turn services the industrial-account/business-to-business customers), or for a third party such as an engineering consultancy or a systems integrator.