Company Overview. Southeastern Tank, out of Lebanon, TN, is looking for a skilled and hardworking Field Service Technician ready to grow their career. If you meet the below qualifications and are interested in joining our team here in Tennessee, we hope to hear from you. Work Environment. On the road and in the shop. ESSENTIAL DUTIES AND RESPONSIBILITIES. The Field Service Technician services, inspects, repairs, and cleans a variety of water stor...