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Senior Software Engineer, Java/FIX

Harris Allied
York, NY Full Time
POSTED ON 12/17/2025
AVAILABLE BEFORE 3/1/2026

Senior Software Engineer/Java, FIX


Industry leading fintech with unparalleled expertise delivering highly liquid, scalable trading solutions for the global derivatives market has an immediate need for a Senior Software Engineer to join their growing team in a full-time role. This is an opportunity to design and implement a global, real-time interactive trading system for the interdealer marketplace. In this hands on, lead role, you will develop the connectivity layer of the application leveraging Java and FIX using QuickFix/J on a low code platform. You will be responsible for the development of new software products and enhancements to existing products for the global market.

Responsibilities

  • Design and develop the connectivity engine in FIX
  • Triage critical production issues and provide rapid response during trading system incidents as part of the level 3 response team
  • Writing clean, high-quality, high-performance, maintainable code
  • Develop and support software including applications, database integration, interfaces, and new functionality enhancements.
  • Collaborate with cross-functional teams to ensure project meets business objectives and compliance standards.
  • Support test and deployment of new products and features.
  • Participating in code reviews


Qualifications

  • 5 years developing production software in Java.
  • 3 years developing electronic trading technology software.
  • Experience with low latency trading, market structure, FIX protocol, and related data.
  • Design and develop efficient, defect-free code under tight time constraints.
  • Exceptional analysis and triage of real-time production systems
  • Clear, concise, and accurate written communication skills
  • Strong work ethic and an entrepreneurial spirit; thrive in a high-pressure environment.
  • Willingness to learn and desire to implement AI solutions that increase developer productivity.
  • Expertise with Object Oriented Design, Database Design, and XML Schema
  • Experience with Agile or Scrum software development methodologies
  • Ability to multi-task, organize, and prioritize work.

Salary : $175,000 - $200,000

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