> Markdown version of [/jobs/ext/4442401-core-java-developer](https://www.wearedevelopers.com/jobs/ext/4442401-core-java-developer). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Core Java Developer - **Company:** Tekaccel Inc - **Location:** Columbus, OH, United States - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Agile Methodology, Application Performance Management, Unit Testing, Code Review, Continuous Integration, Data Structures, Relational Databases, Software Debugging, Software Design Patterns, Distributed Systems, Gradle, Java Virtual Machine (JVM), Spring Framework, Apache Maven, Enterprise Messaging Systems, Object-Oriented Software Development, Performance Tuning, Software Engineering, SQL Databases, Transaction Processing (Computing), Multithreading, Enterprise Software Applications, Concurrency, Spring-boot, Backend, Git, Kubernetes, Apache Kafka, Restful APIs, Docker, Microservices - **Published:** October 31, 2026 - **Apply:** https://www.dice.com/job-detail/2b8ea4a6-81fa-4ede-8bf6-cc27a5fdfeb7 ## About the Role * Strong hands-on experience with Core Java, preferably Java 8 or later. * Excellent knowledge of OOP, collections, exception handling, generics, and concurrency. * Experience with multithreading, synchronization, and JVM performance tuning. * Strong understanding of data structures, algorithms, and design patterns. * Experience with Spring Framework, Spring Boot, and REST APIs. * SQL and relational database experience. * Familiarity with Git, Maven/Gradle, and unit testing frameworks. * Strong analytical and problem-solving skills., * Previous employment or project experience at JPMorgan Chase (JPMC). * Banking or financial services domain experience. * Exposure to Kafka, messaging systems, distributed systems, and transaction processing. * Experience with CI/CD, Docker, Kubernetes, or cloud platforms. ## Description We are seeking an experienced Core Java Developer for an onsite opportunity in Columbus, Ohio. The ideal candidate will have strong hands-on expertise in Core Java, multithreading, concurrency, data structures, algorithms, and enterprise backend application development. Previous experience working at JPMorgan Chase (JPMC) is strongly preferred or required, depending on client guidelines., * Develop and maintain high-performance backend applications using Core Java. * Apply object-oriented programming, collections, multithreading, concurrency, and design patterns. * Build and maintain REST APIs and microservices using Spring Boot. * Optimize application performance, troubleshoot issues, and support production systems. * Work with relational databases and write efficient SQL queries. * Participate in code reviews, unit testing, debugging, and Agile development activities. * Collaborate with cross-functional teams to deliver reliable enterprise applications.