In British English, we'd often call these people 'bodgers': 'bodger' to rhyme with 'Roger'. This is a widely used term for slapdash builders and repairmen who do jobs quickly and carelessly. A 'bodged' job is, for example, a repair which looks superficially acceptable but which will not last. [NB This is different from a 'botched' job which so badly done as to be damaging: we often talk about 'botching' for plastic surgery that goes disastrously wrong]

For an expression roughly equivalent to yours, I'd probably go with "two left hands". A bad dancer has two left feet, and a bad workman has two left hands. In America, there are several common one-word terms with a similar meaning, but the one that I'd be most likely to use is "klutz". Finally, there are several longer, more involved idioms with a similar meaning. My favorite would probably be "he couldn't pour water out of a boot if instructions were written on the heel."

Thank you, Lyn!

Hello! If someone does a "bad job" in any or all of the above professions we call it "bad workmanship".