Title : Tech Lead Java Location : Pittsburgh, PA (Onsite) JD:- Core Java & Backend Development:- 5+ years of hands-on Java development experienceStrong proficiency in Java (Java 8+)Solid understanding of:- Object Oriented Programming (OOP)Design patterns (Factory, Singleton, DAO, etc.)Exception handling, multithreading, and collections:- Experience building scalable, maintainable backend services API DevelopmentStrong experience designing and developing RESTful APIsHands on with Spring Boot / Sp