Full Stack Java Developer – Contract Role

Attadale Partners

Java Developer role at Attadale Partners, LLC focusing on enterprise transformations for government and private clients. Support technology improvements in cross-functional teams with a focus on AI and cloud solutions.

Posted 5/29/2026contractRemote • Oregon • 🇺🇸 United StatesJuniorWebsite

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Hard Skills

Java 17Spring Boot 3.xSpring SecurityOAuth2REST APIOpenAPI 3.xJUnit 5MockitoTest Driven DevelopmentAWS

Soft Skills

communicates technical conceptsgives and receives code review feedbackthinks out loudcross-functional empathymentorship orientation

Tools & Technologies

Amazon ConnectKafkaGitHub ActionsLambdaDynamoDBevent-driven microservicesCI/CDAgentic AI toolingLangChain4jExtreme Programming

Certifications & Qualifications

AWS Certified Developer — AssociateSpring Professional CertificationAWS Certified Solutions Architect — AssociateAWS Certified Machine Learning — Specialty

Industry Keywords

financial serviceshealth careAgileXPproduction systemsopen-source contributionsregulated industrysystems scaled to 100k+ concurrent sessionsagentic AI workflowscloud-native

Tech Stack

Tools & technologies

AWSCloudDynamoDBJavaJUnitKafkaMicroservicesMockitoSpringSpring BootSpringBootVMware

About the role

Key responsibilities & impact

PRINCIPLES ONLY; NO AGENCIES
Attadale Partners, LLC is seeking to fill multiple Java Developer roles for early career Java Developers with 1-3 years of experience to join our team in a CONTRACTOR ROLE 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, and integrated communication channels.
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 can be remote and all applicants must be US based with a preference for Chicago-area applicants.
These roles are 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 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.

Requirements

What you’ll need

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
1-3+ 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
XP ENGINEERING PRACTICES
Pair programming daily — driver/navigator rotation
TDD: Red → Green → Refactor on all production code
Trunk-based dev
Collective code ownership — no silos or fiefdoms
One-week iterations with Friday demos
INTERPERSONAL COMPETENCIES
Communicates technical concepts to non-technical stakeholders
Gives and receives code review feedback constructively
Thinks out loud; surfaces blockers early
Cross-functional empathy — understands agent/customer impact
Mentorship orientation; shares knowledge freely
CERTIFICATION AND ASSESSMENTS
AWS Certified Developer — Associate (DVA-C02) - Preferred
Spring Professional Certification (VMware / Broadcom) - Preferred
AWS Certified Solutions Architect — Associate (SAA-C03) - Advantageous
AWS Certified Machine Learning — Specialty (MLS-C01) - Advantageous
Interpersonal competencies are as important as the core technology skills.
Not a perfect match? If you are a strong Java engineer who is curious about AI, comfortable in XP, and wants to work on systems that matter to millions of customers — we encourage you to apply.
Work is remote and preference is given to applicants located in the Chicago area.

Benefits

Comp & perks

Work is remote and preference is given to applicants located in the Chicago area.
Not a perfect match? If you are a strong Java engineer who is curious about AI, comfortable in XP, and wants to work on systems that matter to customers — we encourage you to apply.
PRINCIPLES ONLY; NO AGENCIES