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Backend Java Developer

Company:
3B Staffing LLC
Location:
Chicago, IL
Posted:
April 28, 2026
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Description:

Interviews are happening.

Role- Backend Java Developer

12 month

Location - Moline IL or Chicago IL- they need to go for inperson interview - no exception

Job Summary

We are seeking a Backend Java Developer with strong Core Java fundamentals and hands-on experience building cloud-native, serverless applications on AWS. The ideal candidate must be strong in REST API design and communication protocols and have practical experience with AWS Lambda, messaging, streaming, and containerized services.

Key Responsibilities

Design, develop, and maintain backend services using Core Java

Build and expose RESTful APIs with strong understanding of HTTP methods, status codes, and request/response models

Develop serverless applications using AWS Lambda

Implement event-driven solutions using AWS SQS and Kinesis Streams

Design and integrate data storage using Amazon DynamoDB

Work with Amazon ECS for containerized backend services

Provision and manage infrastructure using AWS CloudFormation

Ensure secure, scalable, and high-performance backend services

Perform code reviews, unit testing, and troubleshooting Skills & Qualifications

Strong hands-on experience with Core Java

Strong expertise in REST API design and protocols

Solid hands-on experience with AWS services, including:

AWS Lambda

Amazon SQS

Amazon DynamoDB

Amazon ECS

Kinesis Streams

Experience using AWS CloudFormation for infrastructure as code

Experience building event-driven and microservices-based architectures

Working knowledge of Spring Boot / Spring Framework

Experience with CI/CD pipelines

Familiarity with logging and monitoring tools (e.g., CloudWatch, App Insights) Experience Level

8-10 years of backend development experience with 3+ years of hands-on experience working with AWS cloud services

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