Java Developer at OmegaHires – Phoenix, Arizona

Job Title: Java Developer
Location: Phoenix, AZ (Onsite/Hybrid)
Duration: 12 Months

We are seeking an experienced Java Developer to build scalable, high-performance, and resilient enterprise applications. The ideal candidate will have strong expertise in modern Java technologies, microservices architecture, and reactive programming, along with experience in building internet-scale systems.

• Design, develop, and maintain scalable microservices using Java and Spring Boot
• Build and enhance RESTful APIs with a focus on performance and reliability
• Implement reactive and asynchronous programming models for high-throughput systems
• Collaborate with cross-functional teams including product, QA, and DevOps
• Participate in architecture design, code reviews, and technical discussions
• Optimize applications for performance, scalability, and resilience
• Work with NoSQL databases for data modeling and query optimization
• Integrate with messaging systems like Kafka and MQ
• Follow best practices in clean coding, testing, and CI/CD pipelines

• 8+ years of experience in Java-based application development
• Strong expertise in Core Java, Java 8+ features (Lambdas, Streams, CompletableFuture, Optional, Generics)
• Hands-on experience with Spring Boot (preferably reactive)
• Experience with functional and reactive programming paradigms
• Strong experience in Test Driven Development (TDD)
• Experience building asynchronous reactive microservices (Vert.x preferred)
• Expertise in REST API development and OpenAPI (Swagger) specifications
• Strong experience in NoSQL databases, schema design, and query optimization
• Proficiency with modern development tools (Git, Gradle, mock frameworks, load testing tools)
• Experience with workflow orchestration tools (Temporal preferred)
• Strong knowledge of messaging systems (Kafka, MQ)

• Experience with containerization and orchestration (Docker, Kubernetes)
• Prior experience in payment systems or real-time transaction platforms
• Experience in fintech or enterprise-scale API development
• Strong understanding of distributed systems design
• Leadership experience in a fast-paced Agile environment

• Strong problem-solving and analytical skills
• Passion for writing clean, maintainable, and efficient code
• Ability to perform peer code reviews and contribute to architecture decisions
• Excellent communication and collaboration skills