About S. Christensen Engineering, Inc.
With 25 years of industry experience, S. Christensen Engineering Inc. was founded in 2023 and is based out of Apple Valley, CA, by a dedicated professional who spent decades perfecting his craft in asphalt paving, underground utility installation, and street improvement projects. After working with top-tier contractors across Southern California, he recognized the need for a company that combines technical expertise with honest, dependable service—and decided to create one himself. Since launching, S. Christensen Engineering Inc. has specialized in delivering high-quality infrastructure solutions with a major focus on street improvements. From asphalt paving and grading to underground utilities such as water, sewer, and storm drain systems, we bring decades of field knowledge to every project. Our reputation is built on precision, safety, and our ability to meet the unique demands of municipalities, developers, and contractors alike.
Our Experts
Meet the Team
Seth Christensen
President
With over 25 years of experience, Seth provides visionary leadership and strategic direction to drive the company’s growth and success. With extensive industry expertise, He oversees all operations, ensures quality and safety standards, and cultivates strong relationships with clients, partners, and the community.
Valarie Christensen
Vice President, Secretary & Tresurer
Valarie supports overall operations, contributes to long-term planning, and ensures the company operates efficiently and remains compliant with regulatory standards.
Michelle Hisey
Office & Project Manager
Michelle ensures seamless office and project operations. She manages daily office activities, coordinates project planning and execution, and oversees both accounts payable and receivable to maintain financial accuracy.
Evelia Aguon
Payroll Manager & Human Resources Coordinator
Evelia plays a key role in supporting our team by managing payroll processes and assisting with HR functions. She ensures that employees are paid accurately and on time, maintains employee records, Oversees certified payroll, is trained in LCP Tracker and DIR record keeping.