If it's aluminum, (not magnetic) then it could be TIG (Tungsten Inert Gas) welded without issue.
If it's steel (which I doubt) then a magnet would stick, and it could be welded with MIG, (Gas Metal Arc) also without issue. Damp towels, or a spritz bottle of water would control heat.
It would take about four seconds to MIG weld that joint, and about 12-20 seconds to TIG weld that joint.
TIG welding is very focused, and the heat should not be an issue.
Make sure that you find someone that is skilled at either process.
Best regards.
