Java Backend Developer

As a Java Backend Developer at Ultrashield Technology, located in Sector 62 Noida, you will play a crucial role in designing and developing robust backend architectures for various mobile applications. Ultrashield Technology is a prominent mobile app development company known for delivering scalable, secure, and innovative digital solutions to startups, SMEs, and enterprises globally, specializing in mobile-first products across diverse industries. Your primary responsibilities will include building server-side logic, designing APIs, managing databases, and integrating third-party services to ensure the scalability, security, and alignment of the backend with project goals. This role demands hands-on coding, architectural thinking, and collaborative problem-solving with frontend and mobile teams. Key Responsibilities: - 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 such as MongoDB and MySQL/PostgreSQL. - Implementing secure authentication and authorization mechanisms like JWT, OAuth2, and Firebase Auth. - Optimizing application performance, ensuring high availability, and fault tolerance. - Working closely with frontend and mobile app teams for API integration. - Maintaining technical documentation, creating unit tests, and ensuring code quality. - Collaborating with DevOps for deployment, CI/CD, and environment management. Required Skills and Qualifications: - Bachelor's degree in Computer Science, Information Technology, or 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: - Experience with real-time communication systems like chat and video call. - Understanding of multi-tenant architecture and microservices. - Exposure to GraphQL, Docker, and DevOps pipelines. - Familiarity with Firebase, Cloudinary, and scalable media management. What We Offer: - Opportunity to work on diverse projects in a fast-growing mobile app development company. - Collaborative and flexible work environment. - Competitive salary with performance-based growth. - Access to emerging technologies and cross-domain expertise. This is a full-time, permanent position with health insurance and paid sick time benefits. The work schedule is from Monday to Friday at the in-person work location. For further inquiries, you can contact the employer at +91 9599118364.,