AI Java Developer

Ninth Wave

AI Java Developer

Full Time Opportunity

New York City, NY

We are hiring an AI Java Developer to extend the Compass platform: a Spring Boot application backed by Open Search and AWS Bedrock that helps U.S. banks publish, monitor, and govern their open-banking / FDX data-sharing APIs. You will build backend services that ingest bank-supplied artifacts (Postman collections, OAS, configuration files), expose them through REST + Thymeleaf admin surfaces, and integrate LLM-driven assistance (Bedrock Knowledge Bases + Agents, RAG over our internal corpus) into the day-to-day operator workflow.

The role is hands‑on Java + Spring Boot with meaningful GenAI integration work — not a research role and not a pure prompt‑engineering role. You'll own features end‑to‑end, from Open Search index design through Bedrock Agent wiring to the admin UI that exposes them.

• Design and develop services in the Compass Spring Boot codebase — REST APIs, admin Thymeleaf views, Open Search‑backed data flows.
• Integrate AWS Bedrock (Claude family models, Knowledge Bases, Agents) into Java services for RAG, summarization, and operator‑assist features.
• Build and maintain ingestion pipelines that turn bank‑supplied artifacts (Postman collections, configuration YAML, FDX mapping spreadsheets) into structured Open Search documents.
• Wire Open Search indexing, tenant‑scoped routing and vector search for RAG retrieval.
• Implement CI/CD via the existing Git Hub‑based pipelines; keep build and deploy times honest.
• Optimize application performance, scalability, and security.
• Collaborate with the mappings team, the Bedrock / KB content team, and the frontend / Thymeleaf maintainers to define and ship features.
• Write clean, maintainable, well‑documented Java; favor small focused commits and reversible changes.
• Stay current with the Java ecosystem and the GenAI tooling landscape.

• Strong proficiency in Java 17+.
• Spring Boot.
• Spring MVC + Thymeleaf.
• REST API design — JSON‑in / JSON‑out, paginated search endpoints, multipart upload.
• Microservices / service‑oriented design within a single deployable.
• Hands‑on Open Search / Elasticsearch experience.
• Experience integrating LLMs into Java applications via REST clients or SDKs — AWS Bedrock preferred.
• RAG architectures — chunking, embedding, retrieval, citation.
• Vector databases.
• Cloud platform experience — AWS, specifically:
  • Elastic Beanstalk (Compass deploy target — not Kubernetes).
  • Bedrock (KB + Agents).
  • S3, IAM, Cloud Watch.
  • Multi‑account Organization layout.
• Experience with Git, Maven, and CI/CD pipelines.
• Comfortable with relational and unstructured databases.

• Prior work in fintech / open banking / FDX / account‑aggregation / payment‑network connectivity — or willingness to learn the domain fast.
• Experience with Generative AI and LLM applications in production.
• Familiarity with Python for AI prototyping and one‑off data tooling.
• Experience with AI security, prompt‑injection defense, and data‑privacy standards.
• Exposure to Postman collection parsing.
• Exposure to Atlassian APIs.

• Bachelor's or Master's degree in Computer Science, Software Engineering, Artificial Intelligence, or related field — or equivalent demonstrable experience shipping production Java + GenAI systems.