joies

The beneficiary's employment won't matter unless it continues from the same source once in the US. Their employability will not satisfy the sponsorship requirements.
 
Is the $33,000 your current employment? Is it paid in a lump sum or is it like a "normal" job where its divided into paychecks?
If so, then it should be sufficient to meet the minimum requirements. No guarantee if it will be sufficient for the CO - they look at the totality of the circumstances - but it may be sufficient.
If not, then you will almost definitely need a co sponsor.
 
Edit: Note that I-134 applies at the time of the interview for the K-1 visa. So "current" employment would be as of that date, not necessarily right now as implied above.

If you can show income that either matches or exceeds the poverty income levels (Google for guide) for your household then no co-sponsor is needed.