AI Java Developer

Ninth Wave • New York, NY

13d • $100,000 - $125,000

About The Position

We are hiring an AI Java Developer to extend the Compass platform: a Spring Boot application backed by OpenSearch 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 OpenSearch index design through Bedrock Agent wiring to the admin UI that exposes them.

Requirements

• 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 OpenSearch / 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, CloudWatch
• Multi-account Organization layout
• Experience with Git, Maven, and CI/CD pipelines
• Comfortable with relational and unstructured databases

Nice To Haves

• 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

Responsibilities

• Design and develop services in the Compass Spring Boot codebase — REST APIs, admin Thymeleaf views, OpenSearch-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 OpenSearch documents.
• Wire OpenSearch indexing, tenant-scoped routing and vector search for RAG retrieval.
• Implement CI/CD via the existing GitHub-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

What This Job Offers

• Job Type: Full-time
• Career Level: Senior