Backend Java Developer

Compunnel, Inc.; Pasadena (CA); On-site; USD 140,000 - 190,000; Full time

Job summary

Compunnel, Inc. is seeking a Backend Java Developer in Pasadena to design, develop, and maintain scalable backend services and microservices with Java and Spring Boot.

You will build RESTful APIs, GraphQL services, and event-driven systems leveraging Kafka and AWS in a cloud-native environment. The role requires 8+ years of Java backend experience, strong AWS, Docker/Kubernetes, CI/CD, and a solid understanding of SQL/NoSQL databases.

Qualifications

• Bachelor's degree in CS/SE/IT or related field.
• 8+ years of Java backend experience.
• Strong Java and Spring Boot expertise.
• RESTful APIs, GraphQL, and microservices experience.
• Event-driven architectures with Kafka.
• Hands-on AWS cloud and cloud-native deployments.
• CI/CD pipelines and DevOps practices.
• Docker, Kubernetes, and container orchestration.
• SQL/NoSQL databases (PostgreSQL).
• Git and modern version-control workflows.
• Agile software development experience.
• Experience with AI agent workflows and LLM-powered backends.

Responsibilities

• Design, develop, and maintain scalable backend services with Java and Spring Boot.
• Build high-performance RESTful APIs and GraphQL services.
• Implement event-driven architectures using Kafka.
• Develop cloud-native applications on AWS.
• Collaborate with front-end teams to integrate backend services.
• Develop containerized apps with Docker and orchestrate with Kubernetes.
• Design and optimize SQL and NoSQL databases (e.g., PostgreSQL).
• Create CI/CD pipelines and automate builds, tests, and deployments.
• Integrate AI agents and LLM APIs to automate backend workflows.
• Participate in architecture discussions, code reviews, and design sessions.

Skills

Java

Spring Boot

RESTful APIs

GraphQL

Kafka

AWS

CI/CD

Docker

Kubernetes

SQL

NoSQL

PostgreSQL

Git

Agile

AI agent workflows

Education

Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field

Tools

Docker

Kubernetes

Git

Job description

We are seeking a Backend Java Developer to design, develop, and maintain scalable backend applications and microservices using Java and Spring Boot. This role is responsible for building high-performance RESTful APIs, event-driven solutions, and cloud-native applications while leveraging AWS services and modern DevOps practices. The ideal candidate will have strong expertise in Java, Spring Boot, microservices, Kafka, GraphQL, cloud technologies, and AI-augmented engineering workflows.

Key Responsibilities

• Design, develop, and maintain scalable backend services using Java and Spring Boot.
• Develop high-performance RESTful APIs, GraphQL services, and microservices to support enterprise applications.
• Design and implement event-driven architectures using Kafka or other messaging technologies.
• Build, deploy, and maintain cloud-native applications utilizing AWS services.
• Collaborate with front-end developers to integrate backend services with user interfaces.
• Develop scalable and resilient distributed systems following modern software engineering best practices.
• Integrate AI agents and Large Language Model (LLM) APIs to automate and enhance backend workflows.
• Utilize AI-powered development tools such as GitHub Copilot, Amazon Q, or similar technologies to improve engineering productivity.
• Participate in architecture discussions, code reviews, and technical design sessions to ensure high-quality software solutions.
• Implement CI/CD pipelines and support automated build, testing, and deployment processes.
• Develop and maintain containerized applications using Docker and orchestrate deployments with Kubernetes.
• Design and optimize SQL and NoSQL database solutions to support scalable applications.
• Develop and execute unit, integration, and end-to-end tests to ensure application quality and reliability.
• Troubleshoot, debug, and resolve application performance and production issues.
• Collaborate with cross-functional Agile teams to deliver new features and platform enhancements.
• Stay current with emerging technologies and recommend improvements to application architecture and engineering practices.

Required Qualifications

• Bachelor's degree in Computer Science, Software Engineering, Information Technology, or a related field.
• Minimum of 8 years of experience in Java backend development.
• Strong expertise in Java and Spring Boot application development.
• Proven experience designing and developing RESTful APIs, GraphQL services, and microservices.
• Strong experience implementing event-driven architectures using Kafka or other messaging platforms.
• Hands‑on experience with AWS cloud services and cloud‑native application deployment.
• Experience with CI/CD pipelines and DevOps practices.
• Experience with Docker, Kubernetes and container orchestration technologies.
• Experience with SQL and NoSQL databases, including PostgreSQL.
• Experience using Git and modern version control workflows.
• Strong understanding of backend testing frameworks, including unit, integration, and end-to-end testing.
• Experience working in Agile software development environments.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent verbal and written communication skills with the ability to collaborate across cross-functional teams.
• Experience working with AI agent workflows, including tool calling, multi-step task orchestration, and LLM‑powered backend solutions.

Preferred Qualifications

• Experience using AI-assisted development tools such as GitHub Copilot, Amazon Q, or similar platforms.
• Experience designing enterprise‑scale distributed systems and cloud-native architectures.
• Experience implementing highly scalable event‑driven applications using Kafka or other message queue technologies.
• Familiarity with modern software architecture patterns and distributed system design principles.
• Experience optimizing backend application performance and scalability in AWS environments.