Felicity worked at Queen Consolidated for Walter Steele. Walter and Oliver separately asked her for help leading her to believe Oliver was The Hood, and he brought her on board his team. Felicity now works alongside Oliver and Diggle as a trusted member of The Arrow team.
Oliver: I just need your A game right now Felicity.
Felicity: I don't have it! My friend, our friend, was shot with arrows and fell off of a rooftop. Her body is upstairs right above us in a freezer because we don't know what to do with it, with her, so I am so sorry, Oliver, if I have feelings, but maybe if you did, too... I'm sorry. That was mean. But this is Sara we're talking about. Your Sara. How can you stand there being so cold and rational?
Oliver: Because I don't have the luxury of falling to pieces. Everyone is looking to me to handle things, to make the right decisions. Everyone is looking to me to lead. If I grieve, nobody else gets to.
Felicity: You're not even flinching when he...
Sara: Pain and I came to a little understanding a few years back.