Waldemar S. Nelson and Company, Inc. (NELSON) is an integrated engineering, architectural, and project management firm with over 80 years of experience. Founded in 1945, the company began as a small engineering partnership and has grown into a multidisciplinary leader serving clients globally.
NELSON offers comprehensive services across civil, structural, architectural, mechanical, chemical, electrical, and control systems engineering. The firm also provides specialized expertise in process engineering, environmental science, and project management, supporting complex industrial and infrastructure projects.
The company serves a diverse range of industries including electrical utilities, oil and gas, petrochemical, mining, marine, renewable energy, public works, and specialty sectors. With offices in New Orleans and Houston, NELSON combines technical excellence, innovation, and strategic partnerships to deliver reliable, high-performing solutions.
Rooted in a legacy of quality and safety, NELSON maintains long-standing client relationships built on transparency, coordination, and confidence. The firm continues to expand its capabilities and geographic reach while embracing emerging technologies and sustainable practices.
