Java Developer (Spring Boot)

We are seeking an experienced Senior Java Developer with deep expertise in Java, Spring Boot, and database technologies to join our engineering team. You will play a key role in designing, developing, and maintaining scalable, high-performance applications, while mentoring junior developers and driving technical best practices across the team. This is a 40-hour per week, 6-month contract (possible extension), an onsite role at client’s office in Pleasanton, CA. This is a W2 role as a Stage 4 Solutions employee. Health benefits and a 401K are offered. Responsibilities: Design, develop, and maintain robust, scalable, and high-performance backend applications using Java and Spring Boot. Architect microservices-based solutions and contribute to system design discussions. Write clean, efficient, and well-documented code following industry best practices. Design and optimize database schemas, queries, and stored procedures for performance and scalability. Collaborate with cross-functional teams including product managers, QA, DevOps, and frontend developers. Conduct code reviews and provide constructive feedback to team members. Troubleshoot, debug, and resolve complex production issues. Mentor junior and mid-level developers, fostering technical growth within the team. Participate in architectural decisions and contribute to technical roadmaps. Ensure application security, scalability, and reliability standards are met. Stay current with emerging technologies and recommend improvements to existing systems. Contribute to CI/CD pipeline improvements and DevOps practices.

10+ years of professional Java development experience, with experience in retail environments. Strong hands-on experience with Spring Boot, Spring Framework (Spring MVC, Spring Data, Spring Security) Proven experience designing and building microservices architecture Strong expertise in relational databases (e.g., MySQL, PostgreSQL, Oracle) - schema design, query optimization, indexing Experience with NoSQL databases (e.g., MongoDB, Redis, Cassandra) is a plus Solid understanding of RESTful API design and development Experience with ORM frameworks (Hibernate/JPA) Proficiency in build tools (Maven/Gradle) and version control (Git) Experience with unit testing frameworks (JUnit, Mockito) and TDD practices Familiarity with containerization and orchestration (Docker, Kubernetes) Experience with message queuing systems (Kafka, RabbitMQ, or similar) is a plus Understanding of cloud platforms (AWS, Azure, or GCP) Strong knowledge of design patterns, SOLID principles, and clean code practices Experience with CI/CD tools (Jenkins, GitLab CI, or similar) Excellent problem-solving, analytical, and communication skills Bachelor’s or Master’s degree in Computer Science, Engineering, or related field (or equivalent practical experience). Preferred Qualifications: Experience with event-driven architecture Exposure to Agile/Scrum methodologies Prior experience in a technical leadership or mentorship role Knowledge of performance tuning and application monitoring tools (e.g., New Relic, Datadog, Splunk) Experience working in a fast-paced, cross-functional product environment., Agile Programming Methodologies, Amazon Web Services (AWS), Analysis Skills, Apache Cassandra, Apache Kafka, Application Programming Interface (API), Applications Security, Architectural Services, Best Practices, Cloud Computing, Code Reviews, Communication Skills, Computer Science, Continuous Deployment/Delivery, Continuous Integration, Cross-Functional, Database Design, Database Optimization, Database Technology, Debugging Skills, Design Patterns Programming Methodologies, DevOps, Docker, Emerging Technology, Employee Benefits, GCP (Good Clinical Practices), Git, Gradle, Health Plan, Hibernate, Identify Issues, Information/Data Security (InfoSec), JUnit, Java, Java Persistence API (JPA), Jenkins, Maven, Mentoring, Messaging Middleware, Microservices, Microsoft Windows Azure, MongoDB, MySQL, NoSQL, Object Relational Mapping (ORM), Oracle, Performance Tuning/Optimization, PostgreSQL, Problem Solving Skills, Quality Assurance, Query Optimization, REST (Representational State Transfer), RabbitMQ, Redis, Relational Databases (RDBMS), Scalable System Development, Scrum Project Management and Software Development, Software Engineering, Source Code/Configuration Management (SCM), Splunk, Spring Framework, Spring MVC, Stored Procedures, Technical Leadership, Test Driven Development (TDD), Unit Test, User Interface/Experience (UI/UX)