With regard to age and impact on salary for a Translation Project Manager, a statistical average weighting (that is based on how salary varies by age and not for a specific job which may vary considerably) suggests these figures: £16,585 for a worker in their 20s, £21,671 (30s), £25,652 (40s) and £25,652 (50s).he average salary in 2012 was £14,000, based on 1 respondents (a difference of -54% from the 2011 figure. The median salary for a Translation Project Manager based on all salary survey responses is: £18,000.