Fullstack Java Developer

United States | Sept. 6, 2026

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Company: Apex Informatics

Country: United States

Type: Onsite

Employment: Full-time

Description: Title: Fullstack Java Developer Location: New York City, NY Job Description: - Key Responsibilities - Design, develop, and maintain full stack applications using: - Java (Core + Spring Boot) - ReactJS (modern frontend development) - Build and enhance microservices-based architectures with a focus on: - Performance - Scalability - Low latency - Develop and implement Kafka-based streaming solutions for: - Real-time data ingestion - Event-driven data distribution - Contribute to the migration from SQL Server to Oracle Exadata, including: - Data model optimization - Query tuning and performance improvements - Optimize systems supporting real-time market data processing and distribution - Leverage in-memory caching technologies (Hazelcast or similar) to support low-latency data access - Develop and consume RESTful APIs - Partner with Front Office and Production Support teams to: - Troubleshoot critical issues - Ensure platform stability and uptime - Write and maintain unit and integration tests - Participate in architectural discussions around: - Messaging frameworks - Data caching strategies - Distributed systems design • - Required Skills - Strong hands-on experience with: - Core Java - Spring Boot / Spring Framework (Data, MVC, etc.) - Proven experience with Apache Kafka for real-time streaming and event-driven architectures - Strong background in Microservices architecture and distributed systems design - Frontend development experience with: - ReactJS (preferred) or similar modern frameworks - Experience with relational databases and strong SQL skills - Exposure to Oracle / Exadata is highly preferred (or willingness to ramp quickly) - Experience with caching technologies (Hazelcast or similar) - Strong understanding of: - REST API design and development - High-performance, low-latency system design - Experience working in trading, capital markets, or market data environments • - Nice to Have - Prior experience with Oracle Exadata migrations or optimization - Familiarity with: - DTCC, trade flows, or market data feeds - Experience with Drools or rules engines - Scripting experience (Python, Shell, or PowerShell) - Exposure to production support / incident management in trading environments - Knowledge of financial instruments: - Equities - Fixed Income - Derivatives

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