Profile
About Sunil
Sunil builds the backend systems powering CloudUCaaS CPaaS products — messaging APIs, real-time CDR rating, billing hooks, and multi-tenant admin services used by US telecom resellers and SaaS embed customers.
CloudUCaaS Focus
Core engineer on API gateways, usage metering, and billing integration patterns shared with SignalMash.com architecture.
Professional Experience
- ✓Developed REST APIs for SMS, voice, and number provisioning with webhook event delivery
- ✓Built real-time CDR ingestion and rating pipelines for prepaid and postpaid billing models
- ✓Implemented multi-tenant isolation, API keys, and rate limiting for CPaaS reseller portals
- ✓Integrated Stripe, tax calculation hooks, and usage dashboards for US telecom billing flows
- ✓Optimized Node.js and Python services for high-throughput message and call event processing
Key Skills
Node.js & PythonCPaaS API DesignReal-Time CDR RatingPostgreSQL & RedisKafka Event StreamingMulti-Tenant SaaSTelecom Billing IntegrationAWS Cloud Services
Achievements
- ★Shipped production CPaaS APIs handling millions of monthly SMS and voice events
- ★Reduced API latency on rating and provisioning endpoints through caching and queue tuning
- ★Mentored engineers on telecom domain patterns — CDRs, DIDs, and SIP metadata
- ★Contributed core modules reused across CloudUCaaS billing and messaging products
- ★Recognized for reliable delivery on mission-critical billing and API programs
