It's not really a double negative as the negations are in different clauses. If you remove both negations, you get a completely different statement:
> Hiring junior engineers will solve the problem you think you have.
Clause change doesn't rescue the logic. If anything it makes it harder to process.
Refusing to hire junior engineers won't fix your actual problem.
Clause change doesn't rescue the logic. If anything it makes it harder to process.
Fixed. I would click that.