Senior Full Stack Java Engineer – React, Spring Boot & AI-Assisted Development | Contract | New York, NY (Hybrid)
Senior Full Stack Java Engineer – React, Spring Boot & AI-Assisted Development
12+ Years Experience Must
Location: New York, NY
Work Arrangement: Hybrid – 3 Days Onsite per Week - Local Or near by candidates Only
Duration: 12 Months
Job Type: Contract
In Person Interview Must (Final Round)
Job Overview
We are seeking a hands-on Full Stack Java Engineer to design, develop, test, and support enterprise applications across backend services and modern React-based user interfaces.
The ideal candidate will have strong Java and Spring Boot expertise, practical React/TypeScript experience, hands-on UI and end-to-end test automation skills, and experience using AI-assisted development tools such as GitHub Copilot.
This role requires strong technical problem-solving abilities, sound software engineering fundamentals, and the ability to collaborate with business stakeholders and cross-functional Agile teams.
Key Responsibilities
Design, develop, and maintain full-stack features using Java, Spring Boot microservices, React, and TypeScript.
Build and enhance modern frontend applications using micro-frontend architecture patterns.
Develop and maintain automated UI and end-to-end tests using Playwright and Cypress.
Improve regression test coverage and contribute toward established automated testing targets.
Leverage GitHub Copilot and AI-assisted development tools for code generation, test creation, and code review.
Participate throughout the software development lifecycle, including requirements analysis, solution design, coding, testing, deployment, and production support.
Build scalable, maintainable, and high-performing backend services and frontend applications.
Implement unit, integration, functional, and regression testing strategies.
Collaborate with technical teams, business partners, and supervisory stakeholders to deliver business-critical capabilities.
Support application performance testing, production troubleshooting, and continuous improvement initiatives.
Required Qualifications
5+ years of hands-on server-side Java development experience.
Strong knowledge of Java 17/21 and Spring Framework / Spring Boot.
Proven experience developing frontend applications using React, TypeScript, JavaScript, and HTML5.
Experience designing and developing REST APIs and microservices-based applications.
Hands-on test automation experience with Playwright and/or Cypress.
Experience with GitHub Copilot or similar AI-assisted development tools in a professional environment.
Strong knowledge of PostgreSQL, SQL, and relational database concepts.
Solid understanding of object-oriented programming, design patterns, Java multithreading, data structures, and algorithms.
Experience with Git, Jenkins, Gradle, and Agile software development methodologies.
Familiarity with development environments such as IntelliJ IDEA and Visual Studio Code.
Strong communication, collaboration, analytical, and problem-solving skills.
Ability to work onsite in New York City three days per week.
Nice to Have
Experience in fixed-income or equities trading platforms.
Exposure to supervisory, compliance, or surveillance applications.
Knowledge of Kafka, Redis, or Node.js 20+.
Experience with Tableau, LaunchDarkly feature flagging, or Camunda/BPMN workflows.
Familiarity with micro-frontend architecture and enterprise application rollout strategies.
