Hi,
We are a team of 3-5 individual developers having experience of developing highly scalable and concurrent golang services using different go lang frameworks (go-kit, go-micro, revel, gin, beego etc.) We also have developed microservices in golang with RESTful as well as grpc interface. Experienced working with SQL, nosql and graph DB.
We can give you access to some of our POCs in the similar field on GitHub, which will help you in deciding the way forward.
Please contact me to discuss the same in detail.
thanks