For your simple angular.js app, I can finish it within 10~15 hours.
My primary skills and it the best that I do it : - Angularjs / NodeJS/ MongoDB
I excel at : Amazon EBS, S3, EC2, SES, RDS, SQS
I also experience in for 3 years in : Objective C and Java Android developpement
I can provide services in : PHP,Restful API, Google Web Tool Kit, Django,
Of course I am familiar with Github.