Java Full Stack Developer

Siri InfoSolutions Inc; Sunnyvale (CA); On-site; USD 120,000 - 150,000; Full time

Job summary

Synchrony Systems, Inc. in Sunnyvale, CA is seeking a Java Full Stack Developer to design, implement and scale backend services, craft secure RESTful APIs, and build robust microservices.

You will optimize database access with ORM tools, contribute to test automation with JUnit, and participate in CI/CD and cloud deployments, working closely with front-end and platform teams in a fast-paced, collaborative environment.

Qualifications

• Proven experience in distributed systems design and scalable architecture.
• Strong Java (17+) knowledge and multithreading.
• Hands-on Spring Boot, Spring Security, and Spring Data JPA.
• Relational DBs (PostgreSQL, MySQL) and ORM (Hibernate).

Responsibilities

• System Design: Architect and scale distributed backend systems that handle high traffic, concurrency, and data throughput.
• API Development: Design, develop, and maintain high-throughput, secure RESTful APIs and microservices.
• Database Management: Optimize database schemas, write complex SQL queries, and manage data persistence using ORM frameworks.
• Security & Auth: Implement and maintain robust security protocols for authentication and authorization.
• Testing Automation: Write comprehensive unit, integration, and regression test suites to ensure high code quality.
• CI/CD & Cloud: Package applications into containers and assist in deploying services to cloud infrastructure.
• Performance Tuning: Troubleshoot, debug, and optimize application performance, memory leaks, and query bottlenecks.

Skills

Java

Spring Boot

Spring Security

Spring Data JPA

JUnit

RESTful APIs

SQL Server

Tools

Maven

Gradle

Git

Hibernate

Mockito

Job description

Role Title: Java Full Stack Developer

Location: Sunnyvale, CA

Job Type: FULL-TIME

Job Description

Must Have Technical/Functional Skills:

• Java
• Spring Boot
• Spring Security
• Spring Data JPA
• JUnit
• RESTful APIs
• SQL Server

Key Responsibilities

• System Design: Architect and scale distributed backend systems that handle high traffic, concurrency, and data throughput.
• API Development: Design, develop, and maintain high-throughput, secure RESTful APIs and microservices.
• Database Management: Optimize database schemas, write complex SQL queries, and manage data persistence using ORM frameworks.
• Security & Auth: Implement and maintain robust security protocols for authentication and authorization.
• Testing Automation: Write comprehensive unit, integration, and regression test suites to ensure high code quality.
• CI/CD & Cloud: Package applications into containers and assist in deploying services to cloud infrastructure.
• Performance Tuning: Troubleshoot, debug, and optimize application performance, memory leaks, and query bottlenecks.

Required Skills & Qualifications

• System Design: Proven experience with distributed systems design, load balancing, caching strategies, and system scalability.
• Data Structures & Algorithms: Strong foundational knowledge of data structures (trees, graphs, hash maps) and algorithms to write highly efficient code.
• Core Java: Deep knowledge of Java 17 or higher, multithreading, and the Collections framework.
• Spring Ecosystem: Hands-on experience with Spring Boot, Spring Security, and Spring Data JPA.
• Databases: Strong proficiency in relational databases (PostgreSQL, MySQL) and ORM tools (Hibernate).
• API Design: Proven experience designing clean RESTful web services and integrating with third-party systems.
• Build & Test Tools: Daily experience using Maven or Gradle, alongside testing tools like JUnit and Mockito.
• Version Control: Mastery of Git for branching, merging, and pull requests.

Synchrony Systems, Inc.