Java Developer

Job Title: Java Backend Developer
Location: Phoenix (Onsite – In-Person)
Interview Process: One-Shot In-Person Interview Only
Experience Required: 5–7 Years
Employment Type: Full-Time / Contract
Work Authorization: Open to all work-authorized candidates (No visa restrictions)

Job Description

We are seeking an experienced Java Backend Developer to join our team supporting a strategic initiative for our Client in Phoenix, AZ. The ideal candidate will have strong expertise in backend development, API architecture, and payment gateway integrations. Candidates with experience in Kotlin and/or Go (Golang) are highly preferred.

This role requires a hands-on engineer who can design, build, and support scalable, secure, and high-performance backend services in a modern microservices environment.

Key Responsibilities

• Design, develop, and maintain scalable backend applications using Java.
• Build and enhance RESTful APIs and microservices for enterprise-grade applications.
• Develop and support integrations with payment processing and payment gateway platforms.
• Work extensively with API Gateway technologies to manage, secure, and monitor APIs.
• Collaborate with architects, product owners, and cross-functional teams to deliver high-quality solutions.
• Implement secure coding practices and ensure compliance with enterprise security standards.
• Troubleshoot production issues and optimize application performance.
• Participate in code reviews, technical design discussions, and architecture decisions.
• Contribute to CI/CD pipelines and DevOps best practices.

Required Qualifications

• 5–7 years of hands-on experience in Java backend development.
• Strong experience with Java, Spring Boot, and Microservices architecture.
• Solid experience designing and developing REST APIs.
• Hands-on experience with API Gateway platforms (Apigee, Kong, AWS API Gateway, MuleSoft, or similar).
• Proven experience working with Payment Gateway integrations and payment processing systems.
• Strong understanding of distributed systems, event-driven architecture, and backend design patterns.
• Experience with relational and NoSQL databases.
• Familiarity with cloud environments and containerization technologies.
• Strong problem-solving and communication skills.

Preferred Qualifications

• Experience with Kotlin development.
• Experience with Go (Golang) development.
• Prior experience in financial services, fintech, payment processing, or banking domains.
• Experience with messaging technologies such as Kafka or RabbitMQ.
• Knowledge of OAuth2, JWT, API security, and authentication frameworks.

Technical Skills

Must Have:

• Java
• Spring Boot
• Microservices
• REST APIs
• API Gateway
• Payment Gateway Integration
• SQL/NoSQL Databases
• Git

Nice to Have:

• Kotlin
• Go (Golang)
• Kafka
• Docker
• Kubernetes
• Cloud Platforms (AWS/Azure/Google Cloud Platform)

Additional Information

• Location: Phoenix, AZ (100% Onsite)
• Interview: One-shot In-Person Interview (No virtual option)
• Experience: 5–7 Years

Priority Skills: API Gateway, Payment Gateway Experience, Kotlin, Go (Golang), Java Backend Development.