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Full Stack Java Developer

Attadale Partners
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Full Stack Java Developer

Attadale Partners, LLC is seeking to fill multiple Java Developer roles for experienced Senior Developers with 4-6 years of experience to join our team serving successful organizations and government agencies. As a management consulting firm, we are always looking for talented individuals to help improve our clients' business through technology. We have an opportunity to lead enterprise transformation roles including Agentic AI processes, cloud telephony, . In this role, you will be embedded in cross-functional teams with business leaders, senior engineers, and ML engineers to transform legacy business communications, data collection and analysis reporting. In addition, you will support the existing systems to ensure performance during the transition period.

This role is Hybrid, preference is given to the Chicago area, but we do offer some location flexibility. All applicants must be US based, and is open to applicants already with the authority to work in the US. Unfortunately for these roles, we cannot sponsor new or transfer existing H-1B work visas.

We are serve large commercial clients in the financial services and health care, assisting them to transform and modernize their business operations across three pillars: agentic AI workflows, Amazon Connect telephony automation, and expanded self-service for agents and customers. We practice Extreme Programming (XP) — pair programming, TDD, and continuous integration are how we work every day. This is a day-one contributor role; minimum ramp-up time is expected.

This role is Hybrid, preference is given to the Chicago area, but we do offer location flexibility for other US-based office locations. All applicants must be US based, and is open to applicants already with the authority to work in the US. Unfortunately for these roles, we cannot sponsor new or transfer existing H-1B work visas.

Attadale will consider full-time employment or contract employment applications.

CORE JAVA AND PLATFORM SKILLS:

  • Java 17 / 21 LTS (records, sealed classes, pattern matching) - Expert
  • Spring Boot 3.x (auto-config, actuators, profiles, DI) - Expert
  • Spring Security, OAuth2 / OIDC - Advanced
  • REST API & OpenAPI 3.x design - Expert
  • Unit & Integration Testing — JUnit 5, Mockito - Expert
  • Test Driven Development (TDD) - Required
  • AWS — Lambda, DynamoDB - Advanced
  • Amazon Connect / Contact Flows (Lambda handlers, Lex bots) - Preferred
  • Kafka / Amazon MSK (event-driven microservices) - Proficient
  • CI/CD — trunk-based dev, GitHub Actions or equivalent - Advanced
  • Agentic AI tooling — LLM APIs, tool-use loops, LangChain4j - Preferred / Will train

EXPERIENCE REQUIREMENTS

  • 2-4 years professional Java in production systems
  • 2+ years Agile; XP experience strongly preferred
  • 1+ year AWS cloud-native (Lambda, ECS)
  • TDD — evidenced examples will be differentiators
  • Event-driven microservices architecture

EXPERIENCE DIFFERENTIATORS INCLUDE:

  • Amazon Connect integration built end-to-end
  • Agentic AI or LLM workflow implementation
  • Insurance, Financial Services, or regulated industry background
  • Open-source contributions (Java ecosystem)
  • Systems scaled to 100k+ concurrent sessions