职务证书 meaning in Chinese

certificate of job qualification
job qualification certificate

Certificate of the senior english teacher ( an intermediate professional title ) , sponsored by linyi science & technology cadre bureau
中学英语一级教师的中级专业技术职务证书.编号： 217060020 .山东省临沂市科技干部处. 1995年11月
Article 7 . the captain , chief engineer , pilot , engineers , radio and telephone operators and similar personnel on board seaplanes or submersibles must hold valid job certificates
第七条船长、轮机长、驾驶员、轮机员、无线电报务员话务员以及水上飞机、潜水器的相应人员，必须持有合格的职务证书。