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IT Software Engineer 5 (Java Lead Engineer)

Chicago, Illinois, United StatesContractPosted Sep 29, 2026

Job description

Job Title: IT Software Engineer 5 (Java Lead Engineer) Location: Chicago, IL 60661 (Hybrid work model (2x a week) currently; eventually this could change to more days in office if needed) Duration: 12 months contract Interview Process: Via Teams with Video ON (3 sets of technical interviews, including 1 coding interview, 1 Architecture interview and 1 team interview (behavioral); 3 separate interviews.)

FINAL ROUND WILL BE IN OFFICE. As a Java Lead Engineer, you will play a key role in the design, development, and deployment of client's enterprise digital platforms. This position requires a hands-on technical leader who can drive backend application development, mentor engineering teams, and deliver scalable, highly available cloud-based solutions while collaborating with global stakeholders.

Key Responsibilities

  • Lead the design, development, testing, and deployment of Java-based enterprise applications.
  • Provide technical leadership and mentorship to development teams, including geographically distributed teams.
  • Design and develop RESTful APIs and backend services using Java 17.
  • Build and support cloud-native solutions leveraging AWS services such as IAM, Kinesis, DynamoDB, SQS, SNS, KMS, and API Gateway.
  • Troubleshoot and resolve complex application and infrastructure issues.
  • Participate in architecture discussions and contribute to technical solution design.
  • Drive software quality through code reviews, best practices, and development standards.
  • Collaborate with business stakeholders, product teams, and end users to gather requirements and deliver solutions.
  • Lead integration testing, customer acceptance testing, and production deployments.
  • Support DevOps practices, CI/CD pipelines, and operational excellence initiatives.
  • Mentor junior engineers and promote continuous improvement across the team. Required Qualifications:
  • Bachelor's degree or higher in Computer Science, Electrical Engineering, or a related field.
  • 10+ years of experience in Java application design and development.
  • 3+ years of experience leading geographically distributed development teams.
  • Strong expertise in Java 17 and backend application development.
  • Experience developing RESTful web services and microservices architectures.
  • Hands-on experience with AWS cloud services, including: o IAM o Kinesis o DynamoDB o API Gateway o SQS o SNS o KMS
  • Strong SQL and database development skills.
  • Experience with DevOps practices and CI/CD pipelines.
  • Understanding of scalable, highly available, and reliable system design.
  • Exposure to application architecture and solution design.

Preferred Skills

  • Experience with enterprise-scale distributed systems.
  • Knowledge of cloud-native application development patterns.
  • Experience working in Agile/Scrum environments.
  • Familiarity with monitoring, observability, and performance optimization. Required Soft Skills:
  • Strong leadership and mentoring capabilities.
  • Excellent communication and stakeholder management skills.
  • Ability to work independently with minimal supervision.
  • Strong problem-solving and analytical skills.
  • Ability to perform effectively under pressure and tight deadlines.
  • Passion for technology and continuous learning.
  • Collaborative mindset with the ability to work across cross-functional teams.

Description copied from 3core-systems-inc's careers page. Read the full posting before you apply.

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