Corporate Website for Consulting Startup

I need a professional and corporate website for my software consulting startup. The primary goal of the site is to gain new clients.

Key Requirements:
- Design a clean, professional website
- Sections to include: Home, About Us, Services, Contact
- Clear Call to Action for visitors to contact us
- Mobile responsive design
- SEO optimization

Ideal Skills and Experience:
- Proven experience in developing corporate websites
- Strong understanding of SEO
- Proficient in mobile responsive design
- Excellent UI/UX design skills
- Good communication skills for collaboration

Please share your relevant portfolio and estimated timelines.