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Core Java Jobs in New York (NOW HIRING)

Sonsoft Inc

Core Java & Spring

Weehawken, NJ

$55.50 - $71.75/hr

At least 4 years of experience working on Core Java/Spring .. * Atleast 4 years of experience with TDD based development and re-engineering of existing application to incorporate unit tests and ...

Sonsoft Inc

Java Lead (Core Java)

New York, NY · On-site

Must have Java concurrency (multi-threading) experience. * To design and develop applications based on Java/J2EE components. * Design, develop, prototype, and test of the required subsystem and its ...

Sonsoft Inc

Java Lead (Core Java)

New York, NY

Must have Java concurrency (multi-threading) experience. * To design and develop applications based on Java/J2EE components. * Design, develop, prototype, and test of the required subsystem and its ...

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How much do core java jobs pay per hour?

As of Jun 5, 2026, the average hourly pay for core java in New York is $65.56, according to ZipRecruiter salary data. Most workers in this role earn between $55.24 and $73.65 per hour, depending on experience, location, and employer.

What are the key skills and qualifications needed to thrive as a Core Java Developer, and why are they important?

To thrive as a Core Java Developer, you need strong proficiency in Java programming, object-oriented principles, data structures, and a relevant degree in computer science or a related field. Familiarity with tools such as Eclipse or IntelliJ IDEA, version control systems like Git, and frameworks like Spring is typically required, along with certifications such as Oracle Certified Professional Java Programmer (OCPJP) being advantageous. Excellent problem-solving abilities, attention to detail, and effective communication skills help set standout developers apart. These skills ensure robust, maintainable code and efficient collaboration within software development teams.

What are Core Java developers?

Core Java developers are software professionals who specialize in building applications using the fundamental features and libraries of the Java programming language. They focus on core concepts such as object-oriented programming, data structures, multithreading, exception handling, and the Java API. Core Java is the foundation for other Java technologies like Java EE, and developers in this role often create desktop, server-side, or foundational components of larger systems. Their expertise is critical in ensuring robust, scalable, and maintainable Java applications.

What is the difference between Core Java vs Java Developer?

AspectCore JavaJava Developer
FocusFundamental Java programming, core APIs, basic application developmentBuilding, testing, and maintaining Java applications, including web and enterprise solutions
SkillsJava syntax, OOP principles, basic APIsCore Java, frameworks (Spring, Hibernate), web technologies
Work EnvironmentLearning and understanding Java fundamentalsDeveloping full applications, debugging, deployment

Core Java refers to the fundamental Java programming language and its core APIs, essential for understanding Java basics. Java Developer, on the other hand, applies these fundamentals to develop complete applications, often using frameworks and additional tools. While Core Java is foundational, Java Developers build on this knowledge to create real-world software solutions.

What are some typical challenges Core Java developers face when working on large-scale enterprise applications?

Core Java developers working on large-scale enterprise applications often encounter challenges such as managing complex codebases, ensuring thread safety in concurrent environments, and optimizing application performance. They may also need to integrate with legacy systems and maintain code readability for long-term support. Collaborating effectively with cross-functional teams, including QA, DevOps, and business analysts, is essential to meet project goals and maintain high software quality.
What are popular job titles related to Core Java jobs in New York? For Core Java jobs in New York, the most frequently searched job titles are:
What job categories do people searching Core Java jobs in New York look for? The top searched job categories for Core Java jobs in New York are:
Core Java jobs near you
Infographic showing various Core Java job openings in New York as of May 2026, with employment types broken down into 71% Full Time, 2% Part Time, 24% Contract, and 3% Nights. Highlights an 92% Physical, 3% Hybrid, and 5% Remote job distribution, with an average salary of $136,358 per year, or $65.6 per hour.

Senior Core Java Software Engineer

Precision Technologies Corp

New York, NY • On-site

$136K - $180K/yr

Full-time

Posted 4 days ago

Job description

We are seeking a highly experienced Senior Core Java Software Engineer with over 12 years of deep expertise in core Java development, particularly in multi-threaded, real-time systems. The ideal candidate will play a pivotal role in designing, implementing, and maintaining high-performance trading systems within the US Rates (Treasury) electronic trading domain. This role offers the opportunity to work on cutting-edge financial technology solutions, collaborate with global teams, and contribute to the development of robust, scalable, and automated trading platforms.

 
 
Responsibilities:
  • Lead the design and development of high-performance, multi-threaded, real-time trading applications using Core Java.
  • Architect and implement solutions to support electronic trading workflows in US Rates (Treasury), including D2D (Dealer-to-Dealer) and D2C (Dealer-to-Client) channels.
  • Develop and enhance automated testing frameworks to ensure system stability, performance, and reliability.
  • Collaborate with cross-functional teams to understand business requirements and translate them into scalable technical solutions.
  • Optimize existing systems for scalability, latency, and throughput.
  • Provide technical guidance and mentorship to junior team members.
  • Engage in continuous improvement of development processes and tools.
 
 
Requirements:
 
  • Bachelor’s or Master’s degree in Computer Science, Engineering, or a related field.
  • 12+ years of professional software development experience, with a significant focus on trading applications.
  • Proven track record of delivering complex, low-latency systems in a financial services environment.
  • Excellent problem-solving skills, along with strong communication and teamwork abilities.
  • Knowledge of Agile methodologies and software development lifecycle.
 
 
Preferred, but not required:
  • Extensive hands-on experience with Core Java, especially in multi-threaded and real-time system development.
  • Strong understanding of automated testing frameworks and methodologies.
  • Familiarity with US Rates (Treasury) electronic trading market structure, with experience in D2D / D2C trading environments.
  • Knowledge of RFQ (Request for Quote) workflow in US Rates trading, adding value to trading platform enhancements.
  • Understanding of market making workflows within US Rates markets.
  • Experience with the ION platform, including configuration and integration, is a plus.
  • Hands-on experience with KDB databases or related time-series data management tools is a bonus.
  • Familiarity with financial trading systems, market microstructure, and relevant protocols.