# Build Your Career with PT Bukit Makmur Mandiri Utama (BUMA)
Stepping into a rewarding career within the heavy industry sector requires joining an organization dedicated to excellence, innovation, and sustainable growth. PT Bukit Makmur Mandiri Utama (BUMA) stands as one of the most prominent independent coal mining contractors in Indonesia. Established in 1998 and later integrated under Delta Dunia Group in 2009, BUMA has transformed into a professionally managed powerhouse holding a robust market share of approximately 20%.
Driving industry standards forward, the company collaborates with established mining giants and high-potential newcomers. BUMA's comprehensive operational scope spans overburden removal, coal extraction, hauling, land reclamation, and environmental rehabilitation. Powered by a skilled workforce of over 11,300 professionals and an elite fleet of more than 2,500 heavy-duty machineries—including Komatsu, Caterpillar, and Hitachi—BUMA continues to expand its footprint with strategic offices in Balikpapan and Tanjung Redeb.