Xcoobee

Backend Developer

Financial services platform with privacy-first payment operations

2021•5 months
Node.jsGraphQLAWS AmplifyAWS S3
backend
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xcoobee

Xcoobee

Financial services platform with privacy-first payment operations

Node.jsGraphQLAWS AmplifyAWS S3
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Problem Solved

Built a privacy-first payment and subscription platform that handled sensitive medical data with encryption and consent flows — meeting compliance requirements that competitor SaaS tools could not.

Overview

  • •Built payment operations and processing system
  • •Implemented privacy-focused data handling
  • •Developed authentication and authorization system
  • •Created subscription campaign management
  • •Built emergency medical information collection system

Key Skills Demonstrated

Privacy-First ArchitectureGraphQL API DesignSubscription Lifecycle ManagementEncrypted Data StorageAWS Amplify + S3 IntegrationCompliance-Aware Access Controls

Challenges

  • •Building privacy-compliant payment processing
  • •Implementing secure subscription management
  • •Handling sensitive medical data securely

Solutions

  • •Built privacy-first payment processing pipeline
  • •Implemented secure subscription lifecycle management
  • •Created encrypted medical data collection with proper access controls

Key Achievements

  • Built encrypted medical data flows that satisfied compliance review
  • Shipped subscription campaign management used by multiple customers
  • Designed GraphQL APIs that minimized PII exposure on the wire

Tech Stack

Frontend

GraphQL Client

Backend

Node.jsGraphQLAWS AmplifyAWS S3

Deployment

Deployed on AWS with Amplify and S3 for secure data storage

Third-Party Integrations

AWS AmplifyAWS S3GraphQL