Hello,
We are Experience in both NODE.Js as well as AWS serverless stack so we will easily create this Lambda Function in Node.js.
We have over 4 years of experience in Nodejs and AWS we can create Nodejs lambda Function using serverless as well as Claudia framework.
I can also share you my UPWORK portal profile to you in personal in which I have done many projects in AWS and Node.js with estimated time and budget.
Addition to Lambda, we are also experienced in Cognito, Dynamo DB, S3 to host web app and many more.
Please share more details about the app so that we can discuss further!
I am capable of doing this project for you.
Hoping For your good response.
Thank You.
Aditya