Save and Retrieve Document using MongoDB GridFS and Golang

I am a GoLang Developer with 3+ years of exp. I have worked in both MNC as well as start-ups where I was involved in end to end product cycle. I am very strong in algorithms and data structures. and solved many complex real-life problems at my work using algorithms. I worked on the following technologies - Golang, Docker, Groovy Grails, Java, Javascript and databases MongoDB and Postgres. I read your requirements and I am perfect for your requirements. I will try to finish your work in 1-2 days with test cases.