Your problem is not only just change job title

Generally, you cannot use your current employer job experience (5 years) to apply LC, because DOL think it is unfair for people who want to apply the position from outside of your company.
However, there is a workaround, see those information.

Good luck!

1)
学历及工作经验与EB-2

2)
申请人在同一家公司可以申请2份PERM劳工卡吗？

3)
PERM：如何利用现雇主的工作经验满足第二优先

所有跟帖： 

• Thanks for your reply. But my question is that... -shenyang- ♀ (316 bytes) () 12/17/2006 postreply 20:02:00

• I don't see level difference between those two -也想移民美国- ♀ (147 bytes) () 12/17/2006 postreply 20:13:38

• 回复：I think this can be seen from the job deion, not only from -shenyang- ♀ (0 bytes) () 12/18/2006 postreply 05:57:01

• 回复：I think this can be seen from the job deion, -Shenyang- ♀ (254 bytes) () 12/18/2006 postreply 06:08:48

• senior or architecture is better I think -也想移民美国- ♀ (771 bytes) () 12/18/2006 postreply 11:54:29

• 回复：If no senior or architecture words in the job title, -shenyang- ♀ (300 bytes) () 12/18/2006 postreply 12:41:12

• company cooperation is important in your case -也想移民美国- ♀ (0 bytes) () 12/18/2006 postreply 17:52:09