Haystack
← Back to Jobs
Technology
WG

Senior Full Stack Java Engineer / AI Engineer

Whiz Global LLCNewark, NJ🇺🇸United StatesPosted Sep 16, 2026

Why This Role Stands Out

This hybrid role offers a fantastic opportunity to build highly scalable applications and integrate cutting-edge AI/GenAI technologies within the financial services sector, fostering significant career growth. You'll thrive here if you have a strong background in Java, React, and AWS, and are eager to contribute to innovative solutions in a dynamic environment. Apply now to join Whiz Global LLC and shape the future of enterprise applications!

Quick Overview

Seniority
Mid Senior
Work mode
Hybrid
Location
Newark, NJ, United States
Posted
3 days ago
DockerMicroservicesMongoDBOracleSQLSpringSpring BootAWSScrumSplunkTDDAgileCSSDatadogGitGitHub ActionsHTMLJUnitJavaJavaScriptJenkinsKafkaKubernetesLLMPostgreSQLPythonRESTReactRedisTypeScript

Job Description

Job Summary

We are seeking a Senior Full Stack Software Engineer to design, develop, and deliver highly scalable applications within a financial-services environment. The ideal candidate will have strong hands-on experience with Java, Spring Boot, React, AWS, and modern AI/GenAI technologies.

The engineer will work across backend services, frontend applications, cloud infrastructure, APIs, and AI-enabled solutions while following strong engineering, security, testing, and CI/CD practices.

Key Responsibilities

  • Design and develop scalable Java/Spring Boot microservices and RESTful APIs.
  • Build modern, responsive user interfaces using React, JavaScript/TypeScript, HTML, and CSS.
  • Develop and integrate AI/GenAI and Agentic AI capabilities into enterprise applications.
  • Work with AWS cloud services to build and deploy cloud-native applications.
  • Develop event-driven solutions using technologies such as Kafka, Redis, and other distributed systems.
  • Design and optimize relational and NoSQL databases including Oracle, PostgreSQL, MongoDB, or similar technologies.
  • Implement automated testing using JUnit, Mockito, integration testing, and TDD practices.
  • Build and maintain CI/CD pipelines using GitHub, Jenkins, GitHub Actions, or similar tools.
  • Apply observability and monitoring using tools such as Datadog, Splunk, or equivalent platforms.
  • Participate in architecture discussions, code reviews, Agile/Scrum ceremonies, and technical design sessions.
  • Collaborate with Product, UX, Architecture, and other engineering teams to deliver business-critical applications.
  • Ensure solutions meet enterprise standards for security, scalability, reliability, and performance.

Required Qualifications

  • 10+ years of professional software engineering experience.
  • Strong hands-on development experience with Java and Spring Boot.
  • Strong experience developing REST APIs and microservices.
  • Hands-on experience with React and modern JavaScript/TypeScript.
  • Experience with AWS and cloud-native application development.
  • Experience with SQL/relational databases and preferably NoSQL technologies.
  • Strong understanding of CI/CD, automated testing, Git, and Agile/Scrum.
  • Experience working with distributed/event-driven technologies such as Kafka.
  • Strong understanding of object-oriented design, design patterns, and software architecture.
  • Excellent problem-solving and communication skills.

Preferred Qualifications

  • Experience with Agentic AI, LLMs, RAG, LangChain, LangGraph, or AI agents.
  • Experience integrating OpenAI, Anthropic, Gemini, or similar LLM platforms.
  • Experience with Python for AI/automation workflows.
  • Experience with Datadog, Splunk, or enterprise observability platforms.
  • Experience with Docker and Kubernetes.
  • Financial services or banking domain experience.
  • Experience with AI-assisted development tools such as GitHub Copilot, Claude Code, Amazon Q, or Cursor.
  • Experience with high-volume, high-availability production systems.

Similar jobs