Java Backend Engineer

Job Title: Java Backend Engineer Location: St Louis, MO (Hybrid, 3 days onsite/week) Long Term Contract Requirements Good hands-on in Java, J2EE, Databases (Postgres), Web Services (REST, SOAP), Spring boot, Spring MVC, Spring 4.0, Hibernate/JPA, API Gateway, Azure and Microservices. 7-12 years of experience desired in designing software solutions using software architecture design principles. Payment domain expertise and ability to drive the team, integrations, migrations, create approach. Good to have experience in Angular, and front-end technologies. Understanding of Kafka, Integration patterns, Security standards, Concurrency and Multi-threading, Collections, PostgreSQL, Azure, Docker, Kubernetes Hands-on, high-energy, detail-oriented, proactive, and able to function independently under pressure. Strong Problem-Solving skills. Distributed systems (Databases, caches, microservices, message broker) API and Contract Testing using REST Assured/Postman/Swagger/SOAP UI + Groovy/Spring Cloud Contract Test Driven Development TDD Methodology and Unit Testing using Junit/XCTest Use of mocking frameworks such as API Service Virtualization/Mockito/OCMock Static Code Analysis using SonarQube/Xcode Static Analyzer Hands on with Jenkins/PCF or similar tools for automated provisioning of build and test infrastructure. Troubleshooting with Splunk, API aids like Swagger/Postman and source control systems like Git Intermediate knowledge of Maven, Junit, Redis, Oracle database, SQL, Unix command, Shell scripting. Good to have exposure to Financial/Banking Domain, Frontend development, JavaScript, HTML5, CSS3, Bootstrap/Material UI, Angular. Good knowledge of tools like Sonar, Data-dog/Dynatrace, GIT, SVN, Rally/Jira, CI (Jenkin / Bamboo)/CD, Splunk Strong communication skills -- both verbal and written - with strong relationship, collaborative skills, and organizational skills Proven experience in Agile methodology, SDLC & implementation of Projects, debugging the applications.