Senior Backend Java Engineer

a { text-decoration: none; color: #464feb; } tr th, tr td { border: 1px solid #e6e6e6; } tr th { background-color: #f5f5f5; }

Senior Backend Java Engineer

Location: Phoenix, AZ (Hybrid)

About Us

STAFFXPERT LLC is a leading talent solutions and workforce consulting firm dedicated to connecting exceptional professionals with innovative organizations. We specialize in delivering top-tier technology talent and helping our clients build high-performing teams that drive business success.

Job Summary

STAFFXPERT LLC is seeking a Senior Backend Java Engineer on behalf of our client in Phoenix, AZ. This role is ideal for an experienced backend engineer who thrives in large-scale, enterprise environments and enjoys building and supporting mission-critical customer communication platforms. The successful candidate will play a key role in developing, enhancing, and maintaining highly reliable applications that deliver real-time customer notifications and business-critical communications.

This position offers the opportunity to work within a complex, integration-heavy ecosystem, leveraging modern technologies such as Java, Spring Boot, Kafka, microservices, and cloud platforms to support high-volume customer engagement solutions.

Key Responsibilities

• Design, develop, maintain, and enhance scalable backend applications using Java and Spring Boot.

• Build and support microservices and event-driven architectures in a high-availability environment.

• Develop and maintain integrations with enterprise systems and external communication channels.

• Troubleshoot and resolve complex production issues while ensuring system reliability and performance.

• Collaborate with cross-functional teams to deliver technical solutions that meet business requirements.

• Participate in application support activities, including incident management and on-call responsibilities.

• Contribute to system modernization, performance optimization, and continuous improvement initiatives.

• Ensure applications meet security, compliance, scalability, and operational standards.

• Communicate technical concepts, design decisions, and problem-solving approaches effectively with stakeholders and team members.

Required Qualifications

• 6+ years of professional software development experience.

• Strong hands-on experience with Java and Spring Boot.

• Experience designing and developing microservices-based applications.

• Proficiency with Kafka or similar event-streaming technologies.

• Experience working with cloud platforms, preferably Azure.

• Proven ability to support, maintain, and troubleshoot production applications in enterprise environments.

• Strong understanding of distributed systems, application reliability, and performance optimization.

• Experience working within Agile development teams.

• Excellent analytical, problem-solving, and communication skills.

Preferred Qualifications

• Experience working on notification, messaging, or customer communication platforms.

• Background with SMS, email, push notifications, mobile wallet integrations, or real-time communication systems.

• Experience with event-driven architectures and large-scale system integrations.

• Familiarity with mobile application integrations and customer-facing digital experiences.

• Experience in the airline, travel, transportation, or hospitality industry.

• Exposure to Databricks, data lake technologies, Power BI, or CI/CD tools such as GitHub Actions.

• Understanding of regulatory and compliance-focused environments.