There may be many suitable codes, however, they should belong to the code group 251 - "Software and applications developers and analysts" Grupės ir jų aprašai | Lietuvos profesijų klasifikatorius (LPK) (profesijuklasifikatorius.lt).
"Programuotojas" code is 251401, which is the most common, but we always suggest consulting with your UZT consultant to ensure that the requirements are met.