Modern Website Design & Development: SEO, CMS, Post-Launch

I'm looking for a full-stack developer to create a modern, responsive website with key sections such as Home, About Us, Services, and Portfolio. The site will require an easy-to-use CMS for content management post-launch, as well as standard contact fields for user interaction.

The primary custom feature I need is an e-commerce functionality integrated into the website. This includes product pages, a shopping cart, and secure online payment options.

SEO is a crucial aspect of this project. The website needs to be optimized for search engines, ensuring high visibility and ranking on search results.

Post-launch support is also required, to address any potential issues and provide ongoing maintenance and updates.

Key responsibilities include:
- Designing and developing a modern, responsive website with specified key sections
- Implementing an e-commerce functionality
- Optimizing the site for SEO
- Developing and integrating an easy-to-use CMS
- Providing post-launch support

Ideal skills and experience:
- Proficiency in both front-end and back-end development
- Previous experience in e-commerce website development
- Strong understanding of SEO best practices
- Familiarity with various CMS platforms
- Excellent post-launch support and maintenance capabilities

Please include relevant samples of your previous work in your proposal. Thank you.