Job Description :
Following Soft skills are important:

Communication Skills - Active Listening, Clarity of speech, Confidence, Respect and Empathy in Tone, Written Communication (Email Etiquettes) etc.,
Attention to details - Critical Observation, Active Listening, Analysis, Introspection, Questioning / Probing
Problem Solving - Analysis, Logical thinking, Observation, Brainstorming, Decision Making
Positive Attitude - Optimistic, Ability to accept constructive Criticism / Feedback, handle stress and work well under pressure
Has to be flexible working in night shifts and weekends on rotation basis.
A++ certification (Troubleshooting skills) is a must, and in addition