Experience in any frame work development is a must
Strong knowledge in any of the scripting languages (TCL /PERL/Python etc...) ..
Experienced in any one domain Routing and Switching/Wireless/LTE is a must.
Experience in test automation framework design, Estimations ,automation workflows.
Experience in test automation proposals.
Experience in development of libraries/templates/scripts etc.
Experience in complete automation development life cycle(ADLC).
Knowledge on different test automation frameworks.