Laravel/PHP developer required for ongoing site maintenance and new features

Existing web and mobile platform has been developed and a part time developer is needed to make tweaks, implement enhancements/new features, manage production fixes, etc... As our business has grown we need the flexibility to grow and try different features and have them deployed quickly. I would expect to deploy in 2-3 week sprints. Each feature would be tested with the product owner and must be approved before moving to production.