Khizer Khan

• Designed and developed scalable distributed systems using Java, Spring Boot, and microservices architecture, supporting high-traffic backend services across multiple domains • Built backend services handling 10M+ requests/day, improving system scalability and ensuring 99.9%+ service availability • Reduced API latency by ~35% by optimizing inter-service communication, introducing Redis caching, and improving database query performance (PostgreSQL) • Designed and implemented event-driven architecture using Apache Kafka, processing 10M+ events/day and enabling real-time data pipelines • Improved system throughput by 2x by introducing asynchronous processing and optimizing service orchestration • Led system design discussions and contributed to architecture decisions for scalable and maintainable distributed systems • Collaborated with cross-functional teams to deliver high-impact features used by millions of customers

• Designed and built scalable backend systems using Java / Python and microservices architecture, supporting applications with 1M+ active users • Developed RESTful APIs handling 500K+ daily requests with high reliability and performance • Reduced response times by ~30% by optimizing database queries and introducing indexing strategies (MySQL / PostgreSQL) • Implemented event-driven workflows using Kafka / RabbitMQ, improving system scalability and decoupling services • Improved system performance and reduced downtime by implementing caching (Redis) and load balancing strategies • Containerized services using Docker and deployed using Kubernetes, improving deployment efficiency and scalability • Collaborated with product and frontend teams to deliver end-to-end features in agile environments

• Developed backend systems and APIs using Java / Node.js for enterprise applications serving international clients • Built scalable services supporting 100K+ users, ensuring performance and reliability under increasing load • Improved application performance by ~25% by optimizing backend logic and database queries • Integrated third-party APIs and payment systems, enhancing platform capabilities and user experience • Worked with cloud platforms (AWS) for deployment and monitoring of applications • Followed best practices including code reviews, unit testing, and CI/CD pipelines

• Developed backend APIs and application features using Java / Python, supporting core business functionalities • Assisted in building scalable systems handling 50K+ users, ensuring stability and performance • Optimized SQL queries, improving data retrieval performance by ~20% • Collaborated with senior engineers to debug production issues and enhance system reliability • Gained strong foundation in data structures, algorithms, and backend engineering principles

Application development using Java, C, jQuery and frameworks like Spring MVC, JEE, OSGI Framework, RCP, RAP