Responsive Freelancer Portfolio Site -- 2

I need a clean, modern portfolio website that presents my freelance web-development and computer-engineering services to potential clients online. The site’s core purpose is portfolio display, so visual presentation matters: past projects, tech stacks used, and outcome summaries should be showcased in an attractive, well-structured layout.

Because I sell online services, the visitor journey has to be friction-free. A prominent “Book a Call” or “Request a Quote” button that links to my calendaring tool or email is essential, and I want a dedicated section for client testimonials—ideally a slider or card layout that I can expand easily as new feedback comes in.

Key objectives
• Responsive design that looks perfect on desktop, tablet, and mobile
• Fast loading and SEO-friendly code (clean HTML5/CSS3, semantic tags, proper meta)
• Simple CMS or markdown-based workflow so I can add projects without touching code, OR clear documentation if you choose a static stack
• Secure hosting setup guidance (I have a domain and can provide cPanel or GitHub Pages access)
• Source files delivered via Git repository plus a short read-me for local setup

I’m flexible on the tech you use—WordPress, Next.js, static generator, or a lightweight custom build—as long as it stays future-proof and easy for me to maintain. Let me know which stack you recommend, the estimated timeframe, and examples of similar portfolio sites you’ve built.