Java Engineer Plano/Columbus, US

Java Engineer

We are looking for a skilled Java Engineer with 3–5 years of experience in designing, developing, testing, and maintaining scalable enterprise applications. The ideal candidate should have strong hands-on experience with Java, Spring Boot, REST APIs, microservices, and relational databases, along with good software engineering and problem-solving skills.

The candidate will work closely with product managers, business analysts, QA engineers, DevOps teams, and other developers to deliver reliable and high-quality software solutions.

Key Responsibilities

Design, develop, test, and maintain Java-based applications.

Develop scalable and secure RESTful APIs and microservices using Java and Spring Boot.

Write clean, efficient, reusable, and maintainable code.

Participate in technical design and architecture discussions.

Develop and optimize database queries and data models.

Troubleshoot application issues and perform root-cause analysis.

Write unit and integration tests to ensure application quality.

Participate in code reviews and follow established coding standards.

Integrate applications with internal and external systems through APIs and messaging services.

Collaborate with QA, DevOps, frontend, product, and business teams.

Support application deployments and production releases.

Monitor application performance and contribute to performance improvements.

Maintain technical documentation and contribute to continuous improvement initiatives.

Required Technical Skills Core Java

Strong hands-on experience with Java 8/11/17+.

Strong understanding of Object-Oriented Programming (OOP) concepts.

Good knowledge of Collections, Exception Handling, Multithreading, Streams, Lambda Expressions, and Java APIs.

Understanding of design patterns and SOLID principles.

Strong knowledge of data structures and algorithms.

Spring Framework

Strong experience with Spring Boot.

Experience with Spring MVC, Spring Data JPA, and Spring Security.

Good understanding of dependency injection and Spring ecosystem.

Experience developing RESTful web services and microservices.

Database

Strong knowledge of SQL and relational databases such as PostgreSQL, MySQL, or Oracle.

Experience with JPA/Hibernate.

Understanding of database design, indexing, transactions, and query optimization.

Microservices & APIs

Hands-on experience developing microservices-based applications.

Strong understanding of REST APIs, JSON, HTTP, and API integration.

Experience with API authentication and authorization such as OAuth2/JWT.

Knowledge of API documentation tools such as Swagger/OpenAPI.

Testing & Development Tools

Experience with JUnit and Mockito.

Good understanding of unit and integration testing.

Experience with Git and version-control practices.

Familiarity with Maven or Gradle.

Experience with CI/CD tools is preferred.

Cloud & DevOps – Preferred

Exposure to AWS, Azure, or GCP.

Knowledge of Docker and containerization.

Exposure to Kubernetes and CI/CD pipelines is an advantage.

Familiarity with application monitoring and logging tools.

Preferred Skills

Experience with Kafka, RabbitMQ, or other messaging technologies.

Understanding of distributed systems and event-driven architecture.

Experience working with Agile/Scrum teams.

Knowledge of caching technologies such as Redis.

Experience with performance tuning and application optimization.

Exposure to cloud-native application development.

Compensation, Benefits and Duration

Minimum Compensation: USD 44,000 Maximum Compensation: USD 154,000 Compensation is based on actual experience and qualifications of the candidate. The above is a reasonable and a good faith estimate for the role. Medical, vision, and dental benefits, 401k retirement plan, variable pay/incentives, paid time off, and paid holidays are available for full time employees. This position is available for independent contractors. No applications will be considered if received more than 120 days after the date of this post.