Senior Full Stack Software Engineer (Java / React)

Senior Full Stack Software Engineer (Java / React) Position Details Type: Contract to Hire Industry: Leading Financial Firm Location: Hybrid in Newark, NJ Pay Rate: $65 - $70 per hour on W2 No C2C What You Will Do Build applications using modern design patterns, architectural principles, and current industry coding standards Develop high-quality, well-documented, and efficient code Collaborate with product owners to define feature stories and with tech leads on technical design Write unit tests, integration tests, and functional automation Research and resolve issues identified by QA or product support Coach team members and bring input on relevant and emerging technologies Solve complex problems that require evaluating intangible variables Work with Python, Java, JavaScript, React, and Spring Boot Required Qualifications Bachelor's degree in Computer Science, Engineering, or related experience 6+ years of hands-on experience building enterprise-grade applications with modern Java and JavaScript ecosystems Strong UI expertise building modern applications with React and JavaScript Financial or Insurance industry experience Experience with agentic frameworks and AI-driven development tools (Claude Code, GitHub Copilot, etc.) Experience with Agile methodologies and Test-Driven Development (TDD) Excellent problem-solving, communication, and collaboration skills Technical Skills (Advanced Experience in Several) Languages: Java, Python, JavaScript, TypeScript; OOP, design patterns, distributed systems Java Services: Spring, Maven, Microservices, multi-threading, concurrency, parallel processing Frameworks: React, Spring Boot, Flask, Django, Node.js Data Stores: PL/SQL, DB2, Oracle, Postgres, Redshift, NoSQL Data Streaming: SQS, Kinesis, AWS MSK, EventBridge APIs: REST, SOAP, JSON, XML, JDBC, SOA patterns API Management: Kong, Apigee Security: Secure coding, DevSecOps, JWT, SSL, SAML 2.0, OpenID Connect, OAuth 2.0 DevOps: GitHub, Bitbucket, Subversion, Jenkins AWS: Core services across compute, storage, database, IAM, and analytics Testing: Unit, interface, end-user, and automated testing Accessibility awareness, monitoring, and logging Preferred Qualifications Domain Driven Design (DDD) AWS cloud-native solution development Architecture patterns, design, and critical thinking