Maintain my Magento 2 website

I need a reliable highly skilled Magento 2 developer to maintain our growing ecommerce business. Must be South Africa based. Skills required

For responsibilities:
• Maintenance of site:
o Installation of security patches
o Installation of plugins
o Resolving any Magento or server related issues
o Implementation of both front-end and back-end changes
• Develop new functionality
Skills required:
• Magento 2 framework
• Strong object-oriented programming knowledge
• Very good PHP knowledge
• JavaScript is a must for front-end development
• Extensive LESS & CSS knowledge
• Magento certification is definitely a plus