To me, who always plays the mage, the decker (hacker) is the information specialist. Whether it is getting the information or hiding it, the hacker is the most important physical property there is on the sneak in. You hide us from the camera, you detect wireless nodes (guards coming around a corner, drones on overwatch, or pressure switches in the floor). You do all this while walking in a straight line. Like the mage who takes care of Astral threats, the hacker takes care of the physical guards (meteorically speaking). Your ability to redirect data can save the entire group. Make the guard response team think the shadowrunners on the 'other' side of the building so the response is at the wrong place at the right time, or just making sure we are not seen by the ten-thousand cameras leading up to the front door.
When it comes to a gun fight, let the street sam's and the physical adept shoot and/or wield the sword, you wield the data stream. Don't get me wrong, you will need to shoot on occation, but let others who are better at it be the front line fighters, you will be support, the unsung hero. If you can redirect the response, turn off the silent alarm, you have more than paid for your services.
In the old editions (4th and below) the first rule of combat was 'GEEK THE MAGE', I think in 5th edition this will change to (in the voice of the wicked witch of the west) "GEEK THE HACKER AND HIS LITTLE DECK TOO'.