Senior Java Developer (Spring Boot) (Onsite - Pleasanton, CA)

Senior Java Developer (Spring Boot) (Onsite Pleasanton, CA)

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.

Requirements:
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.

Please submit your resume to our network at and apply to the Senior Java Developer (Spring Boot) (Onsite Pleasanton, CA) role.

Please feel free to forward this opportunity to others who may be interested.

Stage 4 Solutions is an equal-opportunity employer. We celebrate diversity and are committed to providing employees with an inclusive environment that is free of discrimination and harassment. All employment decisions are based on job requirements and candidate qualifications, without regard to race, color, religion/belief, national origin, gender identity, age, disability, marital status, genetic information, or other legally protected characteristics.

Compensation: $80/hr. - $89/hr.
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