Lead Java Backend Engineer - Cloud-Native AWS (Remote)

3Core Systems, Inc; Chicago, Northern (IL, KY); Hybrid; USD 150,000 - 210,000; Part time

Job summary

3Core Systems, Inc. is seeking an IT Software Engineer 5 / Lead Java Backend Developer to lead a team building scalable cloud-native applications on AWS. The role is based in Chicago with potential for 100% remote work, though travel is expected when required.

The ideal candidate has 10+ years of software engineering experience, with at least 5 years in a lead role, and strong skills in Java, Spring Boot, microservices, REST APIs, and AWS services.

Qualifications

• 10+ years’ experience in software engineering with at least 5 years in a lead role.
• Proficiency in Java, Spring Boot and building microservices with REST APIs.
• Experience delivering cloud-native applications on AWS and modern DevOps practices.

Responsibilities

• Leads software engineers to deliver business-critical cloud-native applications.
• Defines technical direction and architectural standards.
• Drives AWS cloud adoption and modernization initiatives.
• Ensures solutions are scalable, secure, and high performing.
• Promotes DevOps practices, CI/CD, automation, and AI-assisted development.
• Supports incident resolution and continuous improvement.

Skills

Java

Spring Boot

Microservices

REST APIs

AWS

OpenSearch

Docker

CI/CD

GitHub

Distributed Systems

Cloud Architecture

Observability

DevOps

Infrastructure as Code

SQL/NoSQL

Event-Driven Architecture

API Integration

Performance Optimization

AI-assisted Development Tools

Tools

AWS (ECS/Fargate)

OpenSearch/Elasticsearch

Docker

CI/CD

GitHub

CloudWatch

Job description

3Core Systems, Inc. is seeking an IT Software Engineer 5 / Lead Java Backend Developer to lead a team building scalable cloud-native applications on AWS. The role is based in Chicago with potential for 100% remote work, though travel is expected when required.

The ideal candidate has 10+ years of software engineering experience, with at least 5 years in a lead role, and strong skills in Java, Spring Boot, microservices, REST APIs, and AWS services.