Demo

Sr. AWS Cloud Engineer (Core Java, REST API exp) || W2 ONLY ||

Xlysi
Chicago, IL Full Time
POSTED ON 9/19/2025
AVAILABLE BEFORE 10/18/2025
Key Responsibilities:
  • Backend Development: Design, develop, and maintain backend services using Core Java and integrate RESTful APIs to support business functionality and user interfaces.
  • API Development: Develop, test, and document RESTful APIs that integrate with various services and client applications to ensure seamless communication across systems.
  • AWS Cloud Integration: Leverage AWS services (EC2, S3, Lambda, RDS, API Gateway, PsotGres, etc.) to deploy, scale, and manage applications in a cloud environment.
  • Performance Optimization: Continuously optimize application performance and troubleshoot issues in Java-based applications and AWS cloud infrastructure.
  • Microservices Architecture: Build and manage microservices-based applications, ensuring they are modular, scalable, and fault-tolerant.
  • Security & Compliance: Implement security best practices, such as authentication, authorization, encryption, and data integrity in both the application and AWS infrastructure.
  • Collaboration: Collaborate with cross-functional teams, including frontend developers, DevOps, and QA engineers, to ensure seamless integration and smooth software delivery.
  • CI/CD & Automation: Implement CI/CD pipelines to automate the build, testing, and deployment processes using AWS tools and other relevant technologies.
  • Documentation: Write clear and maintainable technical documentation, including API documentation and deployment processes.

Required Skills and Qualifications:
  • Core Java: Strong experience in developing enterprise-grade applications using Java (Java 8 or higher), including knowledge of core Java concepts like multithreading, collections, concurrency, and JVM performance tuning.
  • REST API Development: Hands-on experience in developing and consuming RESTful APIs, including knowledge of HTTP, JSON, and API design best practices.
  • AWS: Proven experience with AWS services, including EC2, S3, RDS, Lambda, VPC, IAM, API Gateway, and CloudFormation. Familiarity with scaling applications on AWS.
  • Database Knowledge: Experience with relational databases (MySQL, PostgreSQL) and NoSQL databases (DynamoDB, MongoDB).
  • Version Control: Proficiency in Git for version control, managing code repositories, and handling pull requests.
  • Automation Tools: Experience with tools like Maven, Jenkins, or Gradle for building and automating deployments.
  • Testing: Experience with unit testing frameworks (JUnit, TestNG) and integration testing tools for API testing (Postman, RestAssured).
  • Agile Methodologies: Familiarity with agile development practices, including Scrum or Kanban.
Preferred Qualifications:
  • Microservices Architecture: Experience building and deploying microservices using tools like Spring Boot, Docker, and Kubernetes.
  • DevOps Practices: Knowledge of CI/CD pipelines, containerization, infrastructure as code, and AWS-specific services like AWS CodePipeline, ECS, and EKS.
  • Cloud Security: Familiarity with security concepts and best practices in the cloud, including IAM, VPC security, encryption, and compliance.
  • Certifications: AWS Certified Developer – Associate or AWS Certified Solutions Architect – Associate is a plus.

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