My second character was a melee character with a Brotherhood of Steel outlook on technology. It is dangerous for anyone else, so I'll take it from you and/or be the one who controls it or decides its fate. My main skills were Unarmed, Science, and Melee. I basically went for a non-stealthy high tech bruiser with power armor, power gauntlet, INT 10, STR 8 (upped to 10 with implant and intense training) and END 9 (upped to 10). Luck and Cha were 1.
Basically an unarmoed power armor BoS super genius who likes to control technology. With a very small minor in energy weapons on the side, just in case I needed to shoot something. So far I really havent had to tho.

Another concept would be a travelling merchant. Basically, you'd pump Charisma so help your follower's toughness. Maybe get Raul as a mechanic/repair/bodyguard and pick up ED-E or Rex (I prefer Rex) for the other member of your caravan. Keep your other stats relatively low and focus mainly on Speech and Barter and Guns (stick to rifles). Try to talk or buy your way out of everything.