Hi, there.
I have gone through your post and I can see that you are looking for a developer with experience in CodeIgniter to help us update an existing project that was built on an older version of CI.
I have rich experience in developing based on as backend Codeigniter, as frontend Bootstrap, as middleware JQuery.
And I am very familiar with the integration with much number of API and Websites.
For example, Stripe & Paypal Payment, Google Map & Mapbox API, RapidAPI, etc.
Also, I have good experience in Teamwork, so I am very familiar with Git works including Pull request work, Repository management, etc.
I do have skills & experience that are required to complete it to a high standard.
I am ready to work for you now and can provide you perfect results according to your requirement.
I will do my best in order to realize your ideas into reality.
Please contact me, I hope to discuss this job in more detail.