I have been working with Juniper Networks devices since 2008. My main experience is with the MX Series, from the small MX5 to the MX960. I have also worked with EX switches from the EX2200 to the EX9214. Probably I should get any Juniper Networks certification.
These are some of my articles with Juniper Networks Devices:
MPLS Multi Vendor(1/6): Core Layer