Java full stack developer role

Cognizant is seeking a highly skilled Senior Java Full Stack Developer with strong expertise in Core Java, enterprise application development, and modern web technologies. The ideal candidate should possess exceptional analytical and problem-solving abilities, demonstrate strong coding proficiency, and have extensive hands-on experience developing and maintaining enterprise-grade applications using Spring MVC, Hibernate, Oracle, Kafka, and React JS.The successful candidate will be responsible for designing, developing, optimizing, and supporting mission-critical business applications while collaborating with cross-functional teams in a fast-paced Agile environment.Key Responsibilities• Design, develop, enhance, and maintain scalable, high-performance Java-based enterprise applications.• Analyse complex business requirements and translate them into efficient, maintainable, and scalable technical solutions.• Write clean, optimized, reusable, and well-documented code following industry best practices and coding standards.• Troubleshoot, debug, and resolve complex application issues while ensuring system stability and performance.• Perform code reviews and mentor junior developers to ensure high-quality software delivery.• Optimize application performance through code refactoring, tuning, and continuous improvement initiatives.• Develop and maintain RESTful services and backend components.• Work extensively with Oracle databases, including query optimization and performance tuning.• Collaborate with business analysts, QA teams, architects, and stakeholders throughout the software development lifecycle.• Contribute to frontend development using React JS and modern JavaScript frameworks.• Participate actively in Agile ceremonies including sprint planning, reviews, retrospectives, and daily stand-ups.Mandatory Technical SkillsCore Java Expertise• Strong hands-on experience in Core Java development.• Ability to independently solve complex coding and algorithmic problems.• Deep understanding of:o String Handling & Immutabilityo Collection Frameworko Concurrency & multi-threadingo Object-Oriented Programming (OOP)o Exception Handlingo JVM Internalso Design PatternsBackend Development• Spring MVC• Hibernate / JPA• REST API Development• Apache Kafka• Oracle Database• SQL, Query Optimization, and Database Performance TuningFrontend Development• React JS• JavaScript (ES6+)• HTML5• CSS3Essential Competencies• Strong analytical thinking and problem-solving capabilities.• Ability to explain technical decisions, trade-offs, and implementation approaches.• Experience in application debugging, code optimization, and performance tuning.• Strong communication and stakeholder interaction skills.Good-to-Have Skills• Spring Boot• Microservices Architecture• AWS Cloud Services• CI/CD Tools and DevOps Practices• Agile/Scrum Methodologies• Containerization technologies such as Docker and KubernetesDesired Candidate Profile• 8–12 years of hands-on software development experience.• Proven track record of delivering enterprise-scale applications.• Strong understanding of software engineering principles and best practices.• Ability to work independently and collaborate effectively within distributed teams.• Passion for developing high-quality, scalable, and maintainable software solutions.• Strong ownership mindset with the ability to drive technical discussions and solution design.Preferred Notice Period: Immediate to 30 Days