Hire the Best Structural Engineers
in China

I’m a registered professional engineer specializing in structural design. I prepare permit-ready structural drawings across multiple U.S. states, including California, Washington, North Carolina, South Carolina, Michigan, and Colorado. I help architects, builders, and homeowners get high-quality structural drawings that are safe, code-compliant, practical to build, and pass the first time. Services I offer: 1. Timber structure design 2. Steel structure design 3. Reinforced concrete design 4. Masonry structure design 5. Light-gauge steel (LGS) design 6. Composite Structure Design (Timber-Concrete, Timber-Glass, and Steel-Concrete Systems) 7. BIM modeling and coordination 8. AI and automation solutions for structural engineering workflows 9. Advanced structural systems (tuned mass dampers, tuned liquid dampers, high-rise structures) 10. Performance-based design Ready to get started? Message me to discuss your project.

ArchPro is a group of freelance designers with extensive experience in architectural and structural design in California, but are no longer based there. Therefore, we use Upwork to take on projects. The client will need to create an employer account on Upwork and hire ArchPro as an employee. All payments will be securely processed through Upwork, ensuring a safe experience for both the client and the designer I am an architectural designer and structural engineer with over 6 years of professional experience in California, specializing in high-quality residential projects. Throughout my career, I have successfully completed more than 500 residential design projects, managing the entire process from initial concept to final permit approval. Professional Services ADU (Accessory Dwelling Unit) Design: Helping property owners maximize their space with code-compliant additional living units Interior Remodeling Specialist: Expert design for kitchen, bathroom, living room, and sunroom modernizations Load-Bearing Wall Solutions: Providing safe, compliant, and aesthetically pleasing options for wall removal or modifications Home Addition Design: Creating seamless expansion solutions that complement existing structures Retaining Wall Design: Engineered solutions for California's unique topographical challenges New Residential Construction: Comprehensive design services for ground-up residential projects Structural Inspections: Professional assessment and reporting on structural integrity Building Permit Services: Navigating California's building codes to ensure smooth permit approval Fire Damage Restoration: Specialized design solutions for post-fire rebuilding and rehabilitation My Advantages Proficient in architectural and structural design software including AutoCAD, Revit, and SketchUp In-depth knowledge of California Building Code (CBC) and local zoning regulations Meticulous attention to detail, ensuring designs are both beautiful and functional Strong communication skills to ensure client requirements are fully understood and met Consistent on-time and on-budget delivery of high-quality results I am dedicated to turning my clients' visions into reality. Whether it's a small remodeling project or a complete new residence, I provide professional, reliable services tailored to your specific needs. I look forward to collaborating with you and bringing innovative, expert solutions to your next building project.

Hi! I'm Ruojun Zhai. As a creative professional, I specialize in 3D Environment Design. Proficient in Autodesk Maya, Substance Painter, Substance Designer, Zbrush, Unreal Engine. My expertise spans a wide spectrum, including 2D Animation, 3D Design and Modeling, and Illustration.