I was relieved to see your post for an experienced engineers. I've been looking for such a position because we are group of electronic and electrical engineers also we have very good experience in electronic PCB design circuit , very good experience and qualifications in embedded system design, So that we are familiar with the duties your listing described: researching, developing, designing, and testing electronic and electrical components, products, and systems for use in commercial. we have a very good experience ( 3 years ) in advertising Mobile billboards, especially for electronic message billboards, good experience in sensors design ( infrared , laser , magnetic field , ultrasound, ...etc ). About our qualifications , we have BSc in electronic and control system engineering from faculty of electronic engineering and Pr-master degree from faculty of engineering from Cairo university also we took full diploma (170 hrs) in embedded system design and PCB design so we can take your problem and solve it in short time and lowest price and high efficiency