Who we are:
ConnectedX is focused on Digital Transformation and Product Engineering Services, enabling clients achieve their business, operating and technology needs for the digital age. Our unique industry-based, consultative approach helps clients implement digital transformation initiatives. Headquartered in Dallas, Texas, U.S. ConnectedX is a preferred partner for leading Fortune 1000 enterprises and is consistently admired by the clients and employees across the globe.
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.
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