Those engineers who work on fields and provide on field service are termed as field technicians. For example, consider 3 SWAN deployments. To complete network deployment, telecom engineers should visit the field and as an initial step, they should perform a site survey followed by deployment. The entire process mentioned needs field service, where their physical presence is required, Hence the need for field service technicians is been increased day by day. Here is the useful URL, that helps in finding the telecom freelancers. https://www.fieldengineer.com/