Epitaxy Development Engineer (Plant of pure metals) 1. Single Crystal (monocrystalline) GaP grows by Czochralski process; 2. Crystal Processing (cutting, grinding, polishing); 3. Epitaxial films (GaP) growth from the liquid precursors (doping with zinc (Zn); 4. Epitaxial films (GaP) growth from the gaseous precursors (doping with nitrogen (N); 5. Heat treating operations on GaP wafers; 6. LED prototype manufacturing; electrophysical parameters control and control of structure defects; GaP crystalline body orienting during X-Ray exposure; 7. Technologies of GaP and InP wastes recycling. Wastes extraction of Ga, P, and In; recycling and utilization to production.