SPi Global (est. 1980) is outsourcing work to Freelance Copy Editors who can expertly edit higher education/trade market texts which are mostly written by non-native English-speaking authors.
Copy editors should know how to follow CMOS, APA, AMA, and other common editorial styles to properly format text, citations, references, page layouts, etc.
In addition to editing and proofreading, hired copy editors will review the correctness of references, glossary terms, primary and secondary sources, and so on. The company also has gigs that require a specialist to edit text written in a different language.
Compensation: based on experience.