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Java Full Stack Developer

Cynet Systems
Chicago, IL Contractor
POSTED ON 5/9/2026
AVAILABLE BEFORE 6/8/2026
We are looking for a Java Full Stack Developer for our client in Chicago, IL

Job Title: Java Full Stack Developer

Job Location: Chicago, IL

Job Type: Contract

Job Overview:

Pay Range: $55hr - $60hr

Requirement/Must Have:

  • 8 years of software development experience.
  • Strong expertise in Java 17/21/25 and Spring Boot.
  • Hands-on experience with Microservices architecture and RESTful APIs.
  • Strong experience with React.js for front-end development.
  • Experience building scalable cloud-native applications on AWS.
  • Hands-on experience with Docker and Kubernetes/OpenShift.
  • Experience with Drools Rule Engine.
  • Strong knowledge of SQL and NoSQL databases.
  • Experience with Kafka, RabbitMQ, MQ, Kinesis, or similar messaging systems.
  • Strong experience with TDD using JUnit and BDD using Cucumber.
  • Hands-on experience with Playwright for UI and end-to-end automation testing.
  • Experience with CI/CD tools such as Jenkins and GitHub.
  • Experience with Infrastructure as Code tools including Terraform, CloudFormation, and Ansible.
  • Strong communication, analytical, and problem-solving skills.

Experience:

  • Experience designing and developing highly scalable enterprise applications.
  • Experience building reusable front-end components using React.js.
  • Experience integrating front-end applications with backend APIs.
  • Experience developing event-driven and distributed systems.
  • Experience implementing automated build, deployment, and testing pipelines.
  • Experience deploying and managing applications on AWS services such as Lambda, EMR, and Spark.
  • Experience with containerized deployments and orchestration platforms.
  • Experience troubleshooting production issues and improving application performance.
  • Experience working within Agile and Scrum delivery environments.
  • Experience mentoring junior developers and contributing to engineering best practices.

Responsibilities:

  • Design and develop scalable backend services using Java and Spring Boot.
  • Build and maintain RESTful APIs and microservices architectures.
  • Develop responsive and reusable front-end components using React.js.
  • Collaborate with UX/UI teams and backend developers to deliver seamless user experiences.
  • Implement unit, integration, and service-level testing strategies.
  • Develop and maintain UI automation and end-to-end testing using Playwright.
  • Build and maintain CI/CD pipelines for automated build, testing, and deployment.
  • Deploy and manage cloud-native applications on AWS.
  • Containerize applications using Docker and manage orchestration using Kubernetes or OpenShift.
  • Provision and manage infrastructure using Terraform, CloudFormation, and Ansible.
  • Monitor application performance and troubleshoot production issues.
  • Participate in architecture discussions, code reviews, and technical decision-making.
  • Collaborate with stakeholders, architects, and product teams to deliver business solutions.

Should Have:

  • AWS Architect Certification.
  • Experience with performance tuning and monitoring tools.
  • Exposure to large-scale distributed systems.
  • Experience with cloud-native and event-driven architectures.
  • Advanced React.js ecosystem experience including hooks and state management libraries.
  • Experience integrating Playwright automation with CI/CD pipelines.
  • Exposure to Angular or other modern JavaScript frameworks.

Skills:

  • Java 17/21/25.
  • Spring Boot.
  • Microservices.
  • React.js.
  • REST APIs.
  • AWS.
  • Lambda.
  • EMR.
  • Spark.
  • Docker.
  • Kubernetes.
  • OpenShift.
  • Drools Rule Engine.
  • SQL.
  • NoSQL.
  • JUnit.
  • Cucumber.
  • Playwright.
  • Jenkins.
  • GitHub.
  • Terraform.
  • CloudFormation.
  • Ansible.
  • Kafka.
  • RabbitMQ.
  • MQ.
  • Kinesis.
  • CI/CD.
  • TDD.
  • BDD.
  • Event-Driven Architecture.
  • Distributed Systems.
  • Front-End Development.
  • Cloud-Native Architecture.

Qualification and Education:

  • Bachelor s degree in Computer Science, Information Technology, Engineering, or a related field.
  • AWS or other cloud certifications are preferred.
  • Relevant certifications in Java, DevOps, or Full Stack Development are a plus.

Salary : $55 - $60

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