> wild speculation

Yes, quite wild, if I may say so. 

Takṣaka as 'builder' (Polish 'budowniczy', Czech 'stavitel'), 'construction foreman' sounds reasonable, quite convincing. 

Now, Uttanka? One who 'ruins', 'lays waste' (Turner 5628, tañc – ‘contract, coagulate’)?

See this Mbh episode (Kumbakonam 1906 Ed.), where Uttanka, while trying to enter Taksaka's underground home, violently destroys its entrance. 

Artur Karp