Construction Company Website and App Development

I need a website and mobile application to showcase my construction company's projects. The platforms should include:

- Project Photo Gallery
- Detailed Project Descriptions
- Customer Testimonials

I'm unsure if I need a content management system (CMS) for easy updates and management, and would appreciate guidance on this.

Ideal Skills and Experience:
- Web and mobile app development
- UI/UX design expertise
- Experience with CMS integration
- Strong portfolio in project showcase platforms

Looking for a freelancer who can deliver a visually appealing and user-friendly interface.