I applied online. The process took 2 weeks. I interviewed at National Grid (London, England) in Jan 2020
Interview
Typical competency based questions, three, maximum four; and technical job specific questions, two or three, 60-90mins, online or in person. Interview panel of at least two people, usually with hiring manager.
Interview questions [1]
Question 1
Why do you want to work for System Operator? How it this part of National Grid different from the other companies?