Senior Java Backend Engineer - Spring Boot & Microservices

Valiant Technologies LLC; Madison (WI); On-site; USD 120,000 - 170,000; Full time

Job summary

Valiant Technologies LLC is seeking a Senior Java Developer with 7–8 years of hands-on enterprise experience to design and maintain scalable applications using Java, Spring Boot, and microservices.

You'll build RESTful APIs, work with Hibernate/JPA, and implement security with Spring Security. AWS, CI/CD, Docker, and Kubernetes experience are highly valued, with collaboration across DevOps, QA, and business teams.

Qualifications

• 7–8 years of professional Java development experience.
• Strong knowledge of Core Java, OOP concepts, collections, multithreading, and exception handling.
• Hands-on experience with Java 8/11/17.
• Strong experience with Spring Boot, Spring MVC, and Spring Framework.
• Expertise in Microservices architecture and REST API development.
• Experience with Hibernate, JPA, and JDBC.
• Strong SQL knowledge with Oracle, PostgreSQL, or MySQL.
• Experience with Kafka or RabbitMQ.
• Knowledge of AWS services such as EC2, S3, Lambda, and RDS.
• Experience with Git, Maven/Gradle, Jenkins, and CI/CD pipelines.
• Unit testing experience using JUnit and Mockito.
• Familiarity with Docker and Kubernetes.
• Preferred: Angular or React; Redis; performance tuning and monitoring; cloud-native development.

Responsibilities

• Design, develop, and maintain enterprise-level applications using Java and Spring Boot.
• Build scalable microservices and RESTful APIs.
• Develop backend components using Java 8/11/17 and J2EE technologies.
• Work with Hibernate, JPA, and Spring Data for database operations.
• Design and optimize SQL queries, stored procedures, and database schemas.
• Implement application security using Spring Security and OAuth2.
• Develop and maintain applications using AWS services.
• Participate in application architecture, design discussions, and code reviews.
• Troubleshoot production issues and improve application performance.
• Collaborate with frontend developers, QA engineers, DevOps teams, and business stakeholders.
• Follow Agile/Scrum methodologies and participate in sprint planning and technical discussions.

Skills

Java

Spring Boot

Microservices

REST APIs

AWS

SQL

Hibernate/JPA

Git

JUnit

Docker

Kubernetes

Tools

Docker

Kubernetes

Git

CI/CD pipelines

Job description

Valiant Technologies LLC is seeking a Senior Java Developer with 7–8 years of hands-on enterprise experience to design and maintain scalable applications using Java, Spring Boot, and microservices.

You'll build RESTful APIs, work with Hibernate/JPA, and implement security with Spring Security. AWS, CI/CD, Docker, and Kubernetes experience are highly valued, with collaboration across DevOps, QA, and business teams.