Projects & Case Studies
Real-world backend systems architected for scale, performance, and reliability. Each project showcases technical depth and measurable business impact.
Real-time Tournament System
Enterprise-grade tournament engine designed to handle massive concurrent player loads with real-time leaderboard updates. Built with event-driven architecture using Azure Service Bus for reliable message delivery and WebSockets for real-time client updates.
Challenge
Supporting 10,000+ concurrent players with sub-100ms leaderboard updates while maintaining data consistency across distributed systems.
Solution
Implemented CQRS pattern with event sourcing, Redis for read-optimized leaderboards, and horizontal scaling with Kubernetes. Used Azure Service Bus for event choreography between microservices.
Key Results
Architecture Highlights
Tech Stack
Payment Processing Engine
Highly secure payment gateway with multi-provider integration, supporting credit cards, e-wallets, and cryptocurrency. Designed for high transaction volumes with built-in fraud detection and PCI DSS compliance.
Challenge
Processing high-value transactions with multiple payment providers while ensuring security, reliability, and regulatory compliance.
Solution
Built idempotent payment APIs with distributed transaction management, implemented event sourcing for audit trails, and integrated machine learning for fraud detection. Used PostgreSQL for ACID compliance and RabbitMQ for async processing.
Key Results
Architecture Highlights
Tech Stack
Microservices Platform
Cloud-native microservices platform for enterprise applications featuring API gateway, service mesh, distributed tracing, and comprehensive monitoring. Designed for multi-tenancy and high availability.
Challenge
Building a scalable platform that supports multiple business units with different requirements while maintaining performance and security.
Solution
Implemented microservices architecture with NestJS, Kong API Gateway for routing and rate limiting, Istio service mesh for service-to-service communication, and comprehensive observability with distributed tracing.
Key Results
Architecture Highlights
Tech Stack
Real-time Analytics Dashboard
High-performance analytics system processing millions of events per day with real-time visualization. Built to provide business intelligence for gaming platforms with minimal latency.
Challenge
Processing and aggregating massive event streams in real-time while providing instant query responses for business dashboards.
Solution
Implemented Lambda architecture with Kafka for stream processing, time-series database for fast queries, and materialized views for pre-computed aggregations. Built RESTful APIs with sophisticated caching strategies.
Key Results
Architecture Highlights
Tech Stack
Authentication & Authorization Service
Centralized identity and access management system supporting OAuth2, SAML, and custom authentication flows. Designed for multi-tenant environments with role-based and attribute-based access control.
Challenge
Building a secure, scalable authentication system that supports multiple authentication methods while maintaining low latency for every API request.
Solution
Implemented JWT-based authentication with refresh tokens, Redis for session management, and distributed rate limiting. Built OAuth2 provider with support for multiple grant types and RBAC/ABAC authorization.
Key Results
Architecture Highlights
Tech Stack
Notification Service
Multi-channel notification system supporting email, SMS, push notifications, and webhooks. Built for high throughput with guaranteed delivery and retry mechanisms.
Challenge
Delivering millions of notifications daily across multiple channels with guaranteed delivery, proper retry logic, and detailed tracking.
Solution
Built event-driven notification service with priority queues, exponential backoff for retries, and dead letter queues for failed messages. Integrated with multiple providers (SendGrid, Twilio, FCM) with automatic failover.