Full Stack Java Developers (CONTRACT ROLE)

PRINCIPLES ONLY; NO AGENCIESTo help prevent fraudulent applications and identity theft, Attadale asks applicants to confirm they are authorized to work in the United States. Employment offers are contingent upon verification of work authorization and completion of required employment eligibility documentation, including background checks, form I9 and e-verify. Any documents provided for verification will be used only for employment eligibility purposes and handled in accordance with applicable privacy and record‑retention laws.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 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.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.RequirementsCORE JAVA AND PLATFORM SKILLS:Java 17 / 21 LTS (records, sealed classes, pattern matching) - ExpertSpring Boot 3.x (auto-config, actuators, profiles, DI) - ExpertSpring Security, OAuth2 / OIDC - AdvancedREST API & OpenAPI 3.x design - ExpertUnit & Integration Testing — JUnit 5, Mockito - ExpertTest Driven Development (TDD) - RequiredAWS — Lambda, DynamoDB - AdvancedAmazon Connect / Contact Flows (Lambda handlers, Lex bots) - PreferredKafka / Amazon MSK (event-driven microservices) - ProficientCI/CD — trunk-based dev, GitHub Actions or equivalent - AdvancedAgentic AI tooling — LLM APIs, tool-use loops, LangChain4j - Preferred / Will trainExperience Requirements1-3+ years professional Java in production systems2+ years Agile; XP experience strongly preferred1+ year AWS cloud-native (Lambda, ECS)TDD — evidenced examples will be differentiatorsEvent-driven microservices architectureExperience Differentiators IncludeAmazon Connect integration built end-to-endAgentic AI or LLM workflow implementationInsurance, Financial Services, or regulated industry backgroundOpen-source contributions (Java ecosystem)Systems scaled to 100k+ concurrent sessionsXP ENGINEERING PRACTICES Pair programming daily — driver/navigator rotationTDD: Red → Green → Refactor on all production codeTrunk-based devCollective code ownership — no silos or fiefdomsOne-week iterations with Friday demosINTERPERSONAL COMPETENCIES Communicates technical concepts to non-technical stakeholders Gives and receives code review feedback constructivelyThinks out loud; surfaces blockers earlyCross-functional empathy — understands agent/customer impactMentorship orientation; shares knowledge freelyCERTIFICATION AND ASSESSMENTSAWS Certified Developer — Associate (DVA-C02) - PreferredSpring Professional Certification (VMware / Broadcom) - PreferredAWS Certified Solutions Architect — Associate (SAA-C03) - AdvantageousAWS Certified Machine Learning — Specialty (MLS-C01) - AdvantageousInterpersonal 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.BenefitsTo help prevent fraudulent applications and identity theft, Attadale asks applicants to confirm they are authorized to work in the United States. Employment offers are contingent upon verification of work authorization and completion of required employment eligibility documentation. Any documents provided for verification will be used only for employment eligibility purposes and handled in accordance with applicable privacy and record‑retention laws.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.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