Sagar Maheshwary - Backend Engineer

About Me

I am a self-taught Backend Engineer with 6 years of experience building and scaling distributed backend systems. My expertise spans Golang, Node.js (TypeScript), Microservices, RabbitMQ, PostgreSQL, Redis, Kubernetes, and AWS. I enjoy solving high-scale backend challenges and have worked extensively on telephony systems, real-time communication, and video streaming platforms.

Systems Scaled

Daily Phone Calls

Equivalent API Requests

Career Highlights

Scaled telephony product to handle 144k+ daily phone calls using Asterisk PBX, RabbitMQ, Redis, and PostgreSQL RDS.
Redesigned legacy monolith into gRPC-based microservices with async messaging using RabbitMQ.
Built private reusable TypeScript packages for Redis, RabbitMQ, database, and logging integrations.
Integrated Prometheus, Grafana, and Loki for full-stack observability and alerting.
Developed a video streaming microservices project with Golang, NestJS, Docker, and Kubernetes.

Skills

Golang Node.js Nest.js TypeScript Microservices gRPC RabbitMQ PostgreSQL Redis Docker Kubernetes AWS Distributed Systems

Projects

Video Streaming Platform: Microservices-based system using Golang, NestJS, Docker, and Kubernetes with gRPC communication. View on GitHub
Telephony AI Bot: Real-time AI-assisted call handling using Asterisk, RabbitMQ, Redis, and OpenAI API.
Monitoring Stack: Prometheus, Grafana, and Loki setup for logs, metrics, and alerts.