Getting into bioinformatics with no masters/phd

hi, I'm a jr web developer. I started to take a course online a while back Finding Hidden Messages in DNA (Bioinformatics 1) through Coursera. when I start to research jobs in bioinformatics it looked like a master's degree is expected. is that right? do you think it is reasonable to find an entry level job if you finish an online certificate for bioinformatics or that's just not enough knowledge?

is the pay typically lower than other software jobs (it looked like many employers were universities)? what kinds of problems are typically being solved by bioinformatics? thank you.