Software Developer

Led development of two enterprise lottery platforms using Node.js, Express.js, React.js, PostgreSQL, and Sequelize, serving more than 100,000 active users and contributing to an estimated 30% increase in client revenue.

Built scalable microservices supporting over 10,000 daily transactions using Redis, Kafka, RabbitMQ, and event-driven workflows. Designed a multi-tenant white-label architecture for more than five clients, improved PostgreSQL query execution by about 50% and API response time by 20%, implemented Socket.io notifications, and contributed to Docker, Kubernetes, and AWS production deployments.

Developed scalable web applications and backend services using React.js, TypeScript, Node.js, Express.js, and MongoDB, improving website load times by approximately 30%.

Built secure REST APIs with JWT authentication, RBAC, and HTTPS, integrating payment gateways, shipping providers, and third-party services for more than 10,000 users. Developed Python and FastAPI data-processing utilities and reusable React.js and Redux components that reduced development effort by approximately 25%.

Built responsive web applications and REST APIs using React.js, TypeScript, Node.js, Express.js, and Socket.io, supporting more than 5,000 users and improving application performance by approximately 20%.

Designed PostgreSQL schemas, indexes, and SQL queries using Sequelize, improving database efficiency by approximately 20% and reducing data retrieval latency by 25%. Improved backend reliability through structured logging, exception handling, API documentation, query optimization, and Linux deployments.