VirtuLab - Real-Time EdTech Platform from Scratch

At The VirtuLab, we served as the sole backend and DevOps engineer responsible for the entire technical infrastructure of a cloud-native EdTech platform. This was a greenfield opportunity to architect and build everything from scratch.

The platform required real-time video streaming (WebRTC, RTMP), event-driven microservices, and enterprise-grade security — all deployed on Google Cloud Platform with Kubernetes.

We owned the complete backend lifecycle: architecture, implementation, deployment, monitoring, and maintenance.

What We Built

• Multi-language microservices in Node.js, Python, and Java for different domain requirements
• Real-time streaming infrastructure with WebRTC, Wowza, and Agora.io for live video/audio/screenshare
• Complete GCP deployment using Cloud Build, GKE, App Engine, BigQuery, and Cloud Armor
• CI/CD pipelines with GitHub Actions for automated testing, deployment, and rollback

Key Achievements

• Built entire backend infrastructure from scratch — first commit to production
• Delivered real-time streaming supporting hundreds of concurrent users with sub-200ms latency
• Established robust CI/CD reducing deployment time from hours to under 10 minutes
• Designed event-driven architecture handling traffic spikes gracefully with RabbitMQ
• Implemented comprehensive security with MFA, IAM, and Cloud Armor for enterprise compliance

Technical Challenges Solved

• Real-time video at scale — hybrid WebRTC + media server architecture for varying class sizes
• Multi-language orchestration — unified deployment and monitoring for Node.js, Python, Java services
• Greenfield DevOps — established all infrastructure, pipelines, and processes as a solo engineer

Backend

• Node.js / Express.js
• Python / Flask
• Java 8 / Spring Boot
• TypeScript

Real-Time

• WebRTC
• Wowza Media Server
• Agora.io
• RTMP
• Stomp / WebSockets

Data & Messaging

• PostgreSQL
• MongoDB
• Firestore
• RabbitMQ / Celery
• BigQuery

Infrastructure

• GCP / GKE
• Cloud Build / Cloud Deploy
• App Engine
• Cloud Armor
• Docker
• GitHub Actions