About Us
Sierra Engineering & Environmental Services, LLC. was founded by Mr. John Yanguba, MSCE, PE on August 13, 2010 to provide professional services in civil, structural and environmental engineering in the New Orleans area. However, because of owner's inability to secure funds to run the business, he continued with his service as a Senior Civil Engineer with US army Corps of Engineers, New Orleans District. On April 2, 2019, after satisfying all conditions for a construction license, the company was awarded California Contractor license. With this achievement, the owner retired on April 30, 2019 and set-up a construction company in California. Sierra Engineering & Environmental Services then became a California based company with principal office at 7144 Fair Oaks Blvd, Carmichael, Ca. 95608.
The company is structured as a limited liability company (LLC) and company is 100% managed by the owner without board of directors. But as the company grows, there is a plan for more partners, professionals and a Board of Directorship to achieve her goals and objectives.
The company goals and objectives are to establish a reputable minority (African-American) owned construction company to compete for State, Federal and Local Governments contracts.
Sierra Engineering & Environmental Services is a California Disadvantage Business Enterprise (DBE) and Small Business Enterprise (SBE) Construction Service firm to serve as to undertake Sub-contract work for Erosion Controls and Minor Concrete (Driveways, Curb and Gutter)
