Senior Java Full Stack Developer

Compunnel Inc.; Phoenix (AZ); On-site; USD 120,000 - 170,000; Full time

Job summary

Compunnel, Inc. seeks a Senior Java Full Stack Developer in Phoenix to design, develop, integrate, test, and support scalable enterprise applications. You will work across Java/J2EE, Spring Boot, REST APIs, microservices, and modern front-end tech in an Agile environment.

Responsibilities include building backend services, implementing secure APIs, collaborating with cross-functional teams, and ensuring quality through unit and integration tests within CI/CD pipelines.

Qualifications

• 8+ years of software development experience with strong Java/J2EE expertise.
• Proficiency with Java 8/11/17+ and Spring components (Boot, MVC, Security, Data).
• Experience designing REST APIs, microservices, and full-stack solutions.

Responsibilities

• Design, develop, and maintain scalable Java/J2EE applications.
• Develop backend services and enterprise apps using Spring Boot and microservices.
• Implement RESTful APIs and integrate with external systems.
• Build end-to-end full-stack solutions across frontend and backend.
• Work with relational and NoSQL databases; optimize queries and data access.
• Apply security, authentication, and secure API integrations.
• Develop event-driven apps using Kafka or similar messaging tech.
• Participate in architecture reviews, code reviews, and SDLC standards.
• Write unit/integration tests; perform root-cause analysis on issues.
• Collaborate with analysts, architects, QA, DevOps to deliver high-quality solutions.

Skills

Java/J2EE

Spring Boot

REST APIs

Microservices

Front-end frameworks

Databases (SQL/NoSQL)

CI/CD & DevOps

Testing (JUnit/Mockito)

Education

Bachelor's degree in CS/IS/Eng

Tools

Docker

Kubernetes

AWS/Azure

Git/GitHub/GitLab

Jenkins

Job description

The Senior Java Full Stack Developer will design, develop, integrate, test, and support scalable, secure, and high-performance enterprise applications. The role requires strong hands‑on expertise across Java/J2EE, Spring Boot, REST APIs, microservices, modern front‑end technologies, databases, messaging, cloud technologies, and CI/CD. The developer will work across the full software development lifecycle and collaborate with cross‑functional teams in an Agile/Scrum environment.

Key Responsibilities

• Design, develop, and maintain scalable, secure, and high-performance Java/J2EE applications.
• Develop backend services and enterprise applications using Java, Spring Boot, Spring Framework, and microservices.
• Design and implement RESTful APIs and integrate applications with internal and external systems.
• Build and maintain end-to-end full-stack solutions across frontend and backend layers.
• Work with relational and NoSQL databases, including optimized SQL queries, stored procedures, and data‑access components.
• Implement application security, authentication, authorization, and secure API integrations.
• Develop event‑driven and distributed applications using Kafka or similar messaging technologies.
• Participate in application architecture, technical design, code reviews, and development standards.
• Write unit, integration, and automated tests to ensure application quality and reliability.
• Troubleshoot production issues, perform root‑cause analysis, and implement effective resolutions.
• Collaborate with Business Analysts, Architects, QA Engineers, DevOps teams, and other stakeholders to deliver high-quality solutions.
• Work with CI/CD pipelines and DevOps tools to automate application build, testing, and deployment processes.
• Monitor application performance and identify opportunities for optimization and scalability.
• Follow enterprise coding standards, security guidelines, SDLC processes, and software development best practices.

Required Qualifications

• 8+ years of experience in software development with strong Java/J2EE expertise.
• Strong hands‑on experience with Java 8/11/17 or higher.
• Extensive experience with Spring Boot, Spring MVC, Spring Security, and Spring Data.
• Strong experience developing REST APIs and microservices.
• Hands‑on experience with React.js and/or Angular.
• Experience with Kafka or other messaging/event‑streaming technologies.
• Strong SQL and database development experience with Oracle, PostgreSQL, SQL Server, or similar databases.
• Experience with JUnit, Mockito, and automated testing frameworks.
• Experience with Git, Maven/Gradle, Jenkins, GitHub/GitLab, or similar DevOps tools.
• Understanding of Docker, Kubernetes, and cloud technologies such as AWS or Azure.
• Strong understanding of object‑oriented programming, design patterns, data structures, and application architecture.
• Experience working in Agile/Scrum development environments.
• Bachelor’s degree in Computer Science, Information Technology, Engineering, or a related field, or equivalent practical experience.
• Excellent problem‑solving, analytical, communication, and collaboration skills.

Preferred Qualifications

• Experience in banking, financial services, or other highly regulated enterprise environments.
• Experience working with large‑scale, high‑volume transactional applications.
• Knowledge of cloud‑native application development and modernization.
• Experience with AWS services, Kubernetes/OpenShift, Docker, and CI/CD pipelines.
• Familiarity with application monitoring and observability tools.
• Knowledge of secure coding practices and enterprise application security.
• Experience working with distributed systems and event‑driven architectures.