International commerce and opportunities abound. Christians are sometimes persuaded that going for overseas employment can be an effective means of witness for Christ and the Gospel. Maybe so; maybe not. Digging into the details will help temper expectations toward realism. It's possible that the job proposed doesn't allow for much, if any, evangelistic or ministry opportunities. Count the cost. Qualifications and job performance are also of high importance. This is not a vacation! Not a lark! Your presence and performance need to leave a lasting testimony that makes your message believable.