Your job description is simply a guide...how are you putting your own sauce on your work? There are so many easy ways to standout in your company and start to become an invaluable member of the team. What are you doing that is not on the job description?
Check out these resources:
8 Signs an Employee Is Exceptional (Which Never Appear on Performance Evaluations)
https://www.linkedin.com/pulse/8-signs-employee-exceptional-which-never-appear-jeff-haden/
Carla Harris
Finding a Sponsor at Work
https://www.ted.com/talks/carla_harris_how_to_find_the_person_who_can_help_you_get_ahead_at_work#t-185186