Alok Kumar Ranjan

About Alok Kumar Ranjan

Senior Java Full Stack Developer with 12+ years of experience in Java, Python, Spring…

Experience

1. Lead Consultant

   Unisys

   Sep 2023 — Present · Pennellville, NY, US

   Develop secure login and registration forms with client-side validation using ReactJS.• Manage authentication state and user feedback using React hooks and context API.• Ensure secure handling of input data to prevent XSS attacks in ReactJS components.• Set up RESTful APIs for login, logout, and registration using ExpressJS.• Use Express middleware for token validation and session management.• Implement error handling and logging for authentication processes in ExpressJS.• Store user credentials with hashed and salted passwords using bcrypt in MongoDB.• Design schemas to include user roles and permissions for access control.• Securely manage sensitive data with MongoDB\'s built-in encryption features.• Utilize AWS Cognito for user pool management and federated identities.• Implement multi-factor authentication (MFA) and account verification through AWS Cognito.• Manage access to authentication services with AWS IAM roles.• Stream user login and registration events for real-time monitoring and analytics with Kafka.• Configure Kafka topics to ensure fault tolerance and high availability.• Process streams to detect and alert on unusual login patterns using Kafka.• Encrypt Kafka communication with SSL/TLS to secure data in transit.• Authenticate Kafka clients using SASL for secure data transmission.• Regularly update Kafka security configurations to address emerging threats.• Analyse authentication logs and metrics to generate reports and insights using Snowflake.• Implement role-based access control (RBAC) to manage data access securely.• Schedule and automate reporting for ongoing monitoring and compliance in Snowflake.• Implement local and OAuth strategies for flexible authentication options using Passport.js.• Use Passport.js middleware to handle authentication and session management.• Configure error handling for authentication failures and security breaches with Passport.js.

Skills

• Sql
• Hibernate
• Hive
• Spring Framework
• Hdfs
• Hadoop
• Javascript
• Nosql
• Java
• Unix
• Apache Pig
• Struts
• Xml
• Map Reduce
• Cloudra