Position. Field/. Tunnel Engineer. location. Portland, OR. Reports to. Project Engineer. SUPERVISES. N/A. . . OBAYASHI CORPORATION. is seeking. a. qualified candidate with experience in. heavy. civil. and underground. construction. including. site work, utilities. excavation. TBM. tunnels. SEM tunnels. drill & blast tunnels. mining. shafts. or. underground structures. works. . The position. is. at. a project. site. in. Columbus, Ohio. . . ROLE &....