Full Stack Java Developer - On-Site Coordinator

About the Role: SmarTek21 is seeking an experienced Full Stack Java Developer / On-Site Coordinator to join our team. The successful candidate will serve as a key technical contributor to enterprise-grade applications, driving both robust backend architecture and modern UI development, while leading on-site coordination and actively partnering with offshore engineering teams across multiple time zones to deliver business-critical outcomes. Lead and drive the technical design, development, and maintenance of enterprise-grade full-stack applications across backend architectures and modern user interfaces. Act as the primary on-site technical coordinator, bridging communication, aligning sprint goals, and driving delivery across distributed offshore teams and local stakeholders. Build, enhance, and integrate REST and SOAP web services utilizing Spring Boot, Hibernate, Servlets, JSP, MVC, and Security frameworks. Develop responsive client-facing interfaces, reusable UI components, and dynamic web experiences using ReactJS (or modern equivalent frameworks), JavaScript, and jQuery. Architect and implement relational database components, queries, stored procedures, and data mappings using JDBC, SQL, and JPA.Enforce high code quality and test coverage by implementing automated unit tests with JUnit and mocking frameworks (Mockito, JMockit, etc.).Oversee continuous integration and deployment pipelines using Jenkins and govern source control workflows across Git or TFS.Bachelor's degree in Computer Science, Software Engineering, or a related field.~ Senior-level professional experience in enterprise software engineering with proven technical leadership or on-site coordination capabilities.~5+ years of hands-on Java development experience.~5+ years of experience building enterprise applications using Servlet, JSP, MVC, and Security frameworks.~3+ years of experience with JavaScript and jQuery.~ Demonstrated hands-on expertise with REST and SOAP web services, XML, XSD, and XSLT.~ Strong database proficiency including JDBC, SQL, stored procedures, and JPA.~ Hands-on experience with automated unit testing utilizing JUnit and mocking frameworks (e.g., Familiarity with Agile methodologies and CI/CD tools such as Jenkins.~ Proven track record of proactive collaboration and technical coordination with offshore and globally distributed teams. Experience with Backbone.js. Exposure to Splunk for centralized log analysis and performance monitoring. Foundational knowledge of web accessibility standards (WCAG / ADA).