Every electronic equipment needs a printed circuit board which is called PCB. So, the PCB assembly is the only option to run the electronics circuit. However, designing the PCB circuit, you will need enough skill in electronic circuitry, so you can make the ultimate circuit which will help you to build it through SMT assembly. During the designing the PCB circuit, you have to remember that you have ground all the traces in the circuit board, so that there will be no chance of the short circuit in the electronics circuitry. Moreover, you have to create a big ground loop in the printed circuit board so that the whole circuitry will be on a solid earthing base.
When you are doing the surface mount PCB assembly, you will need a secure ground loop where all traces are going to be meeting at the ground base. You should remember that PCB design is a highly specialized skill. For a good PCB designing, you will need good PCB designing software, which will provide you enough opportunity to create the accurate and well-tuned electronics circuit. However, you have to be aware of the electronics circuit tricks which will help you to make a good stand in the PCB designing industry. At least, if you have acquired a diploma in electronics, and you have done a specialization in PCB designing, then you have a great chance to shine in the PCB designing industry.