The Senior Software Developer will design, develop, and maintain backend systems, optimize existing code, and leverage AI tools for improvement.
Senior Software DeveloperSenior Java Developer with Reactive experience
Overview of the RoleNinth 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
Ninth Wave New York, New York, USA Office
115 Broadway, New York, NY, United States, 10006
Similar Jobs
Artificial Intelligence • Machine Learning • Software • Database
The Senior Software Engineer will own end-to-end features in a deep tech stack across frontend and backend, focusing on scalability and reliability while actively participating in code reviews and team communication.
Top Skills:
CeleryDjangoDockerGitlab Ci/CdKubernetesNext.JsPostgresPythonReactRedisTypescript
Artificial Intelligence • Cloud • Security • Software • Cybersecurity
Design, build, and operate lakehouse platform components, drive open table format adoption, and collaborate on data architecture management.
Top Skills:
Apache IcebergSparkGoJavaKubernetesPythonScalaTrino
Artificial Intelligence • HR Tech • Information Technology • Machine Learning • Software • App development • Industrial
As a Senior Software Engineer, you will lead frontend initiatives using React and React Native, collaborating with product and design to deliver user experiences, while mentoring teammates and shaping frontend architecture.
Top Skills:
JavaScriptReactReact Native
What you need to know about the NYC Tech Scene
As the undisputed financial capital of the world, New York City is an epicenter of startup funding activity. The city has a thriving fintech scene and is a major player in verticals ranging from AI to biotech, cybersecurity and digital media. It also has universities like NYU, Columbia and Cornell Tech attracting students and researchers from across the globe, providing the ecosystem with a constant influx of world-class talent. And its East Coast location and three international airports make it a perfect spot for European companies establishing a foothold in the United States.
Key Facts About NYC Tech
- Number of Tech Workers: 549,200; 6% of overall workforce (2024 CompTIA survey)
- Major Tech Employers: Capgemini, Bloomberg, IBM, Spotify
- Key Industries: Artificial intelligence, Fintech
- Funding Landscape: $25.5 billion in venture capital funding in 2024 (Pitchbook)
- Notable Investors: Greycroft, Thrive Capital, Union Square Ventures, FirstMark Capital, Tiger Global Management, Tribeca Venture Partners, Insight Partners, Two Sigma Ventures
- Research Centers and Universities: Columbia University, New York University, Fordham University, CUNY, AI Now Institute, Flatiron Institute, C.N. Yang Institute for Theoretical Physics, NASA Space Radiation Laboratory
