Java Backend Developer

As a Java Backend Developer at Ultrashield Technology, you will play a crucial role in designing and developing robust backend architectures for various mobile applications. You will be responsible for the following key tasks: - Designing, developing, and maintaining scalable RESTful APIs for mobile and web platforms. - Building backend systems using Spring Boot (Java/Kotlin) or Node.js (Express/NestJS). - Integrating and managing databases including MongoDB and MySQL/PostgreSQL. - Implementing secure authentication and authorization mechanisms such as JWT, OAuth2, and Firebase Auth. - Optimizing application performance to ensure high availability and fault tolerance. - Collaborating closely with frontend and mobile app teams for API integration. - Maintaining technical documentation, unit tests, and ensuring code quality. - Collaborating with DevOps for deployment, CI/CD, and environment management. Qualifications required for this role include: - Bachelor's degree in Computer Science, Information Technology, or a related field. - Minimum 3 years of experience in backend development. - Strong proficiency in Java with Spring Boot or Node.js with Express/NestJS. - Hands-on experience with MongoDB, MySQL, or PostgreSQL. - Good understanding of API security, rate limiting, role-based access control, and WebSocket/STOMP. - Working knowledge of AWS services (EC2, S3, Lambda) and CI/CD pipelines (GitLab, GitHub Actions, Azure DevOps). - Familiarity with Git version control and Agile development methodologies. Preferred skills for this role include: - Experience with real-time communication systems like chat and video calls. - Understanding of multi-tenant architecture and microservices. - Exposure to GraphQL, Docker, and DevOps pipelines. - Familiarity with Firebase, Cloudinary, and scalable media management. At Ultrashield Technology, you will enjoy working on diverse projects in a fast-growing mobile app development company. You will be a part of a collaborative and flexible work environment, with a competitive salary and performance-based growth. Additionally, you will have access to emerging technologies and cross-domain expertise. Please note that this is a full-time role with an in-person work location in Sector 62, Noida. The work schedule is from Monday to Friday.,