Project Maintainer for Royal Mail shipping API.

We are seeking a Project Maintainer for our Royal Mail shipping API integration, specifically designed for our warehousing software, Piqcer. This integration is critical to our business operations, and our client requires a maintenance contract to ensure seamless functionality and timely updates. The ideal candidate must be available during business hours (Monday to Friday, 9 AM to 5 PM British time) to address any issues that may arise. The API is fairly static and has yet to fail, the integration is developed in Golang and is hosted on an AWS EC2 instance. Your expertise will be vital in ensuring continued performance and reliability.