Java Developer

Java DeveloperLocation – Naperville, IL - OnsiteDuration – 6+ Months Contract Rate $40/hr on w2We are seeking an experienced Senior Java Full Stack Developer with strong expertise in Core Java, AWS, Spring Boot, and Microservices architecture to design, develop, and maintain scalable enterprise applications. The ideal candidate should have knowledge in MongoDB, SQL Server, and PostgreSQL. The candidate should have worked in the Banking Domain.Key ResponsibilitiesDesign, develop, and maintain high-performance, scalable applications using Core Java (JDK 8+).Build and enhance Microservices-based architectures using industry-standard frameworks like Spring Boot.Develop and consume RESTful APIs for system integration.Develop applications on AWS.Deploy and manage applications on WebLogic and Apache Tomcat servers.Design and optimize database solutions using Oracle and PostgreSQL, SQL Server, and MongoDB.Ensure high availability, performance, and responsiveness of applications.Troubleshoot production issues and perform root cause analysis.Collaborate with cross-functional teams including QA, DevOps, and business stakeholders.Adhere to secure coding practices and compliance standards (especially relevant for BFSI environments).Participate in code reviews, design discussions, and technical mentoring of junior developers.Required SkillsCore Competencies:Strong hands-on experience in Core Java (Multithreading, Collections, Streams, JVM tuning).Extensive experience in Microservices architecture and design patterns.Experience with Spring Framework (Spring Boot, Spring MVC, Spring Data).Expertise in Oracle, SQL Server, MongoDB, and PostgreSQL databases (SQL, PL/SQL, performance tuning).Strong experience with application servers: WebLogic and Apache Tomcat.Proficiency in developing and consuming RESTful / SOAP web services.Additional Technical Skills:Experience with Hibernate / JPA for ORM.Knowledge of CI/CD pipelines (Jenkins, Maven/Gradle).Familiarity with containerization (Docker/Kubernetes) is a plus.Experience with logging/monitoring tools (Splunk, ELK, etc.).Understanding of security standards (OAuth, JWT, encryption).Preferred Qualifications:Experience in Banking / Financial Services domain.Strong understanding of enterprise application architecture and integration patterns.Essential Skills:Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence, and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.