3Core Systems, Inc
3Core Systems, Inc
51 – 200 Employees
B2BConsultingHR Tech
3Core Systems, Inc. is a B2B consulting and HR technology company that helps organizations improve their human resources operations through SAP SuccessFactors and integrated digital HR solutions. As an SAP Silver Partner, the company supports clients across implementation, project management, consulting, and application management, connecting immediate HR process improvements with longer-term business performance goals and KPI tracking.

Senior Java Backend Engineer (AWS) – Illinois Remote

Lead the development and modernization of cloud-native AWS applications as a Java backend engineer. Shape Spring Boot, OpenSearch, CI/CD, and engineering practices while providing technical leadership across teams.

Description

  • Provide technical leadership and delivery ownership for engineers building and operating scalable AWS cloud applications
  • Lead delivery of business-critical software applications
  • Set technical direction and define architectural standards
  • Advance AWS cloud adoption and modernization programs
  • Guide architecture and solution design across Spring Boot microservices, OpenSearch, CI/CD, observability, and AWS infrastructure
  • Protect application scalability, performance, security, and reliability
  • Advance DevOps, CI/CD, automation, and AI-assisted development practices
  • Contribute to incident resolution, operational excellence, and continuous improvement
  • Partner with Product Owners, Architects, product teams, platform teams, and other stakeholders
  • Mentor engineers and strengthen technical capability across the team
  • Connect technology investments to business priorities and drive successful execution

Requirements

  • Professional experience developing Java backend systems
  • Hands-on experience with Spring Boot, microservices, REST APIs, and distributed systems
  • Experience with AWS services including ECS/Fargate, IAM, ALB, RDS, CloudWatch, and Secrets Manager
  • Experience working with OpenSearch or Elasticsearch
  • Experience with Docker, CI/CD, GitHub, observability, DevOps, and infrastructure as code
  • Understanding of SQL and NoSQL databases, event-driven architecture, API integration, and performance optimization
  • Experience designing cloud architectures and supporting AWS adoption and modernization
  • Experience using AI-assisted development tools
  • Strong technical leadership, communication, stakeholder management, mentoring, coaching, collaboration, problem-solving, critical thinking, decision-making, ownership, conflict resolution, and adaptability
  • Ability to influence cross-functional teams and deliver complex cloud-native solutions
  • Background in automotive, Java, Lucid, or OpenSearch is relevant
  • The role emphasizes backend engineering rather than a front-end-heavy full-stack focus on Angular, React, and TypeScript

Benefits

  • 12-month contract engagement
  • Full-time work schedule
  • Fully remote work arrangement
  • Travel when required
  • Opportunities to lead technically and mentor engineers

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