Hello,
I'm a software architect with more than 8 years of Industrial experience in software development. This job sounds exactly similar to the job role I've been handling currently for my employer. Hence I'm bidding for this.
I'm currently doing Swagger API spec(with OpenAPI documentation) and the project works on AWS with NodeJS(backend) and Angular(frontend). We're doing the documentation in both YAML and JSON formats. We are also using OAuth2 and IAM(Amazon related) Authentication on our swagger APIs. It also has simple logical examples, so the user can try it out.
I could do this work with £20 GBP per hour. I can assure you quality in my work and I can get you some samples of my work, if you're interested. I will also help you in publishing the swagger documentation as Public APIs. We currently handle both public and private endpoints through the same swagger documentation. Well maintained documentation is my surety.
Thank you!