◦ Designed and implemented SmartID authentication API using Node.js and Express.js, incorporating JWT-based authentication to secure user access and manage user sessions.◦ Developed and maintained backend services leveraging ArangoDB for efficient data querying and management, using AQL (Arango Query Language) for complex data operations and transactions.◦ Built and managed a containerized environment with Docker for the backend services, ensuring seamless development and deployment processes.◦ Configured CI/CD pipelines using GitLab CI, automating the build, test, and deployment processes for continuous integration and delivery.◦ Developed facial recognition services using Python and FastAPI, integrating MediaPipe and facial recognition libraries for advanced biometric authentication features.

◦ Developed microservices using Java 8, Spring Boot, and Kubernetes, improving system scalability and reducing infrastructure costs by 0.8%.◦ Built and deployed RESTful APIs using Spring MVC and Hibernate, ensuring seamless communication between services and databases.◦ Led testing efforts with JUnit and Mockito, increasing test coverage to 95% and reducing critical bugs by 1.3%.◦ Optimized legacy codebases by refactoring Java code and implementing design patterns such as Factory, Singleton, and Observer, improving code quality and maintainability by 1.5%.◦ Utilized Java Reflection API to handle dynamic object manipulation and custom annotations, increasing flexibility in complex workflows by 1.2%.

◦ Developed a scalable web platform with integration to existing systems, enhancing operational efficiency by 1.2% and supporting increased user traffic.◦ Engineered and optimized data pipelines for real-time production data analysis, leveraging Apache Kafka and Apache Spark, which supported predictive maintenance and reduced system downtime by 1.3%.◦ Designed and implemented RESTful APIs using Node.js and Express, facilitating efficient data exchange between front-end and back-end systems.◦ Optimized application performance by applying best practices infront-end development with React and Redux, resulting in faster load times and improved user interaction.