1.项目工程师：
顾名思义，项目工程师只是一个专业或负责管理工程和技术项目的人员或工程师，因此可以按照计划和时间表完成项目。
2.应用工程师：
顾名思义，应用工程师就是负责改善软件功能并能够规划和设计工具，引擎和功能设备的人员或员工。
项目工程师和应用工程师之间的区别：
| Project Engineer | Application Engineer |
|---|---|
| It mainly focuses on managing engineering and technical projects. | It mainly focuses on creating new software architecture. |
| Skills required for project engineer includes good communication skills, ability to explain design ideas and plans, good organizational skills, etc. | Skills required for application engineer includes developing strong quantitative skills, development experience, ability to troubleshoot problems, interpersonal skills, etc. |
| Their responsibilities includes preparing cost estimates, design and conduct tests, monitor project progress, maintain product and company reputation, etc. | Their responsibilities includes develop and maintain documents for designs and application, analyze and meet customer requirements, troubleshoot problems that are being identified, etc. |
| Factors affecting project engineer performance includes no technical understanding, poor documentation skills, lack of design skills, etc. | Factors affecting application engineer performance includes poor managerial skills, lack of technical knowledge, poor coordination with team members, etc. |
| Its process include project planning, maintaining, execution, testing and commissioning. | Its process include managing, designing, developing or creating, and implementing both programs and applications. |
| Its main objective is to manage planning and processes of project and make sure it gets completed on time. | Its main objective is to design as well as improve software quality and performance. |
| Its benefit includes increase safety, reduce time spent on working, identify and solve problems, control and maintain performance, etc. | Its benefit includes risk assessment, provide updates, provide technical support, provide support to engineering software, etc. |
| Project engineer tasks are more difficult than Application Engineer tasks. | Application Engineer tasks are less difficult than Project Engineer tasks. |
| It cannot handle role of Application Engineer. | Its role is limited and therefore cannot handle role of project engineer. |