Senior Software Developer Senior Java Developer with Reactive experience

Overview of the Role Ninth Wave is seeking an experienced engineer to build, improve, and maintain application code under the direction of a senior team lead or lead engineer to meet business and technical requirements. The engineer must demonstrate the ability to efficiently build application code from the datastore layer all the way through to the API. The engineer will also maintain and patch systems, software, and applications to eliminate bug fixes, security vulnerabilities and maintain technology currency of systems and applications.
In addition to traditional development, the engineer will be expected to leverage modern AI-assisted development tools and plugins to analyze existing codebases, improve quality metrics, identify vulnerabilities, and refactor or optimize existing implementations. This includes using AI-powered tools to assist with code analysis, testing improvements, performance tuning, and accelerating the development lifecycle while maintaining strong engineering standards.
Other responsibilities include documenting design and engineering standards; developing to performance metrics and operational guidelines for consistent and stable design; and building and implementing operational processes.
Must have prior work experience with Docker and reactive implementations of Java. Experience with Vert.x is a strong plus. Vision for this role: The company is looking to continue to expand functionality, enhance orchestration efficiency for scaling out and back in, and improve the overall high availability of our software products. The person in this role will help lead the expansion, modernization, update, and maintenance of our software services, including leveraging AI-assisted development practices to continuously improve the quality and maintainability of the platform.
This role is based in our New York City office and follows the Company's current hybrid work policy. Responsibilities

Design, develop, and test back-end software
Maintain, analyze, and refactor existing codebases to improve performance, security, and maintainability
Use AI-assisted development tools or plugins to help analyze code, identify improvements, and accelerate development and refactoring efforts
Maintain and update software documentation
Participate in a distributed development team and collaborate on architecture and engineering best practices

Qualifications

Experience with reactive implementations of Java
Experience with Docker
Proficiency in core Java programming language
Experience with AWS, Azure, or GCP cloud
Proficiency building APIs using Java (REST/JSON)
SQL or No-SQL experience
Experience using AI-assisted development tools or plugins for code analysis, refactoring, testing, or development acceleration
Proficiency with Vert.x is a strong plus
Financial services or Fintech domain experience preferred
Bachelor’s Degree in Computer Science, Engineering, or the equivalent work experience

Company Overview

Ninth Wave is a permission-based SaaS platform that delivers secure data connectivity to financial institutions, offering configurable controls, visibility, and insights into all connections between aggregators, third-party apps, and internal applications. Ninth Wave empowers financial institutions, enabling secure data exchange in a holistic and scalable open finance ecosystem.

Location: New York, NY

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