If the area you live doesn't appear to have many employment opportunities or room for advancement, it may be getting time to move. First, however, you would be well-served in contacting other transgender people in your area. Find out how they are surviving and dealing with employment and discrimination issues. Also, find out how available positions are to the general public. You can do this by contacting your State's unemployment office.
Discrimination definitely exists.
The fact is you really don't want to work for any employer who discriminates or doesn't appreciate the skills you offer. However, in looking in the mirror, make certain your manner of dress is appropriate for your intended occupation. Be aware that employers are most unlikely to hire you if there are any incongruencies in your presentation. In other words, be consistent. If you're name is Catherine, or Frank, dress accordingly.