AI Java Developer

Ninth Wave, Inc.; New York (NY); On-site; USD 100,000 - 130,000; Full time

Job summary

Ninth Wave, Inc. is seeking an AI Java Developer in New York City, NY, to enhance its Compass platform—a Spring Boot application that supports U.S. banks in managing their data-sharing APIs.

The ideal candidate will have strong Java and Spring Boot skills, focusing on integrating AWS Bedrock functionalities. This hands-on role offers opportunities to impact the fintech landscape.

Qualifications

• 5+ years of experience with Java and Spring Boot.
• Strong understanding of REST APIs and microservices.
• Experience with AWS services such as Elastic Beanstalk.

Responsibilities

• Design and develop services in the Compass Spring Boot codebase.
• Integrate AWS Bedrock into Java services.
• Build and maintain ingestion pipelines for banking artifacts.

Skills

Strong proficiency in Java 17+

Spring Boot

Spring MVC + Thymeleaf

REST API design

Hands-on OpenSearch / Elasticsearch experience

Experience integrating LLMs into Java applications

Cloud platform experience — AWS

Experience with Git, Maven, and CI/CD pipelines

Education

Bachelor's or Master's degree in Computer Science or related field

Job description

Ninth Wave

AI Java Developer

Full Time Opportunity

New York City, NY

Job Summary

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.

Key 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.

Required Skills & Qualifications

Technical Skills

• 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.

Preferred Skills

• 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.

Educational Requirements

• 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.