Prosecution: district attorney's office: anything from file clerk, administrative assistant, paralegal, or attorney.
Judge: courts- again, administrative, bailiffs, court reporters
Defense: private law offices, legal aid clinics, private investigators
Arrest: Police departments - clerical, dispatchers, officers
Detention: jail/prison guards, intake processing, transport specialists, prison teachers, social workers, chaplains
release: probation and parole officers
and many more!