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Software Engineer

Haystack

Salary not specified
Dec 3, 2025
NJ, US
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Fidelity Investments is seeking to develop and maintain low-latency, high-performance trading systems for cryptocurrency markets

Requirements

  • Expertise in low-latency design patterns, trading systems, and kernel bypass tech
  • Experience with SQL, time-series databases, microservices, and cloud deployments
  • Experience with Java
  • Experience with algo systems
  • Experience with cloud-based deployments

Responsibilities

  • Design and implement technology solutions for digital asset trading
  • Build ultra-low latency trading algorithms, matching engines, and smart order routers
  • Work with WebSocket, FIX protocols, and modern Java zero-GC patterns
  • Collaborate across teams on APIs, distributed systems, and resilient messaging services
  • Mentor and guide small agile teams, setting technical direction and driving innovation

Other

  • Bachelor’s degree in CS or related field
  • 10+ years trading engineering experience, preferably in crypto or capital markets
  • Strong collaboration, communication, and leadership skills
  • Hybrid work model