Ravi Kumar

Founding Engineer

Bengaluru, Karnataka, India

• Architected multi-tenant SaaS infrastructure from scratch: JWT + refresh token rotation, RBAC with row-level isolation, comprehensive audit logging, and token-bucket rate limiting
• Deployed production systems on AWS (EC2, NGINX, CloudFront, WAF, S3, SES) achieving 99.9% uptime across 30+ stores

Flagship Product: Zoober

Multi-Tenant Hyperlocal Commerce Platform | 30+ Store Segments | Express + MongoDB + Flutter

• Designed Express.js REST API with 23 MongoDB collections using 2dsphere geospatial indexes for <100ms radius-based store discovery under concurrent load
• Implemented idempotent 7-stage order state machine with optimistic locking to handle duplicate WebSocket events during network partitions
• Built real-time WebSocket sync layer broadcasting order updates to 1000+ concurrent connections with automatic reconnection and event replay
• Architected 4-app Flutter ecosystem (Customer, Merchant, Rider, Admin) with BLoC state management and go_router deep linking across Android, iOS, Web
• Integrated payment gateways (Juspay, PhonePe, Razorpay) with webhook signature verification and idempotent transaction handling

Internal Tool: MCPVave

AI Engine — Cross-Platform MCP Client | Foundation for AI-Powered Commerce

• Built Model Context Protocol (MCP) engine enabling standardized AI/LLM-to-data communication via SSE/STDIO across 6 platforms (Android, iOS, Windows, macOS, Linux, Web)
• Developed internal packages: mcp_client (protocol implementation) and llm_shared (unified LLM provider interface for Claude, GPT, Gemini)
• Powering AI capabilities: intelligent inventory management, demand forecasting, automated customer support, and smart order routing across Voltvave products

Founding Engineer

Bengaluru, Karnataka, India

• Architected event-driven Node.js backend processing 80K+ orders with <200ms P95 latency; separated read/write workloads using MongoDB + Redis to avoid write amplification
• Built real-time WebSocket infrastructure syncing order state across 4 client apps with automatic reconnection; integrated Zoho Gofrugal ERP for automated stock sync and catalog management across 35+ stores
• Designed graceful degradation for payment gateway failures (Juspay, PhonePe, Razorpay) with retry logic and admin recovery workflows, processing ₹1.5Cr+ GMV
• Deployed HA infrastructure on AWS/GCP with blue-green deployments and automated rollback on health check failures, maintaining 99.9% uptime

Software Engineer (Remote)

• Built consumer-facing Flutter apps (Footbus, Livehappy) with BLoC state management and shipped 15+ releases across Play Store and App Store
• Developed backend systems (Node.js, PHP) and collaborated across time zones on API design, feature specifications, and production debugging

Real-Time Trading Dashboard | Event-Driven Microservices Architecture

FastAPI, Next.js 16, Kafka, PostgreSQL, Redis, Docker Compose

• Architected 12-service event-driven system with Kafka-based data pipeline (KRaft mode, Snappy compression) processing live market data from Kite WebSocket API through 4-stage flow (data-ingestion → candle-builder → rsi-calculator → divergence-detector) with <50ms end-to-end latency
• Implemented incremental RSI calculation using Wilder's smoothing (avoiding 300+ candle recalculation per tick) and ZigZag peak/trough analysis for price/RSI divergence detection with Redis pub/sub broadcasting alerts to WebSocket clients and PostgreSQL time-series persistence
• Built multi-source news aggregation (Livemint, Moneycontrol, Financial Express) with keyword tagging (150+ terms), sentiment analysis, and 5-minute Redis caching for real-time financial news delivery
• Developed responsive frontend with Next.js 16 App Router, React 19, TypeScript, Tailwind CSS v4, SWR caching, and embedded TradingView charts for live market visualization

Offline-First Mobile App | Flutter + BLoC

• Built cross-platform Flutter app with offline-first architecture using Isolate-based multithreading for background data processing without blocking UI
• Implemented Hydrated BLoC with Hive persistence for offline-first state management, enabling full app functionality without network connectivity

Flutter Icon Libraries | Static + Animated | lucide-animated Ecosystem

• Published and maintaining two Flutter packages: flutter_lucide (1,666+ static icons) and flutter_lucide_animated (smooth Lottie-style animations) with tree-shaking optimization
• flutter_lucide_animated officially featured in pqoqubbw/icons — the lucide-animated ecosystem alongside Svelte, Vue, and Angular implementations

AI Image Generation Pipeline | E-commerce Product Visuals

TypeScript, Node.js, OpenAI API, Google Gemini, Nano Banana

• Built automated pipeline using OpenAI API for runtime prompt generation and Gemini Nano Banana model for high-quality realistic image generation
• Designed for e-commerce/website product showcase generation with optimized prompts for professional product photography