Senior FIX Protocol Engineer - Trading Systems

Job

QuellSoft Inc.

Jersey City, NJ (In Person)

Full-Time

Posted 1 week ago (Updated 6 days ago) • Actively hiring

Expires 6/23/2026

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Job Description

Job Title:

Senior FIX Protocol Engineer -

Trading Systems Introduction:

This position is for a Senior FIX Protocol Engineer with extensive experience in supporting trading systems, market connectivity, and FIX messaging environments. The ideal candidate should have a deep understanding of FIX Protocol, trading workflows, production support, and Unix/Linux environments. Java proficiency is also required for support, debugging, and integration tasks.

Responsibilities:

Support and troubleshoot FIX Protocol connectivity across trading systems Analyze and resolve issues related to order flow, execution flow, and market messaging Perform production support, incident handling, and root cause analysis Monitor FIX sessions and troubleshoot connectivity failures Collaborate with trading desks, operations teams, and engineering teams Support real-time transaction processing systems Utilize Unix/Linux commands and scripting for debugging and log analysis Assist with Java-based components supporting FIX integrations Maintain platform stability and reliability within production environments Participate in on-call or production support activities as needed

Requirements:

Required Skills:

FIX Protocol (70%) FIX connectivity Order routing Trade execution workflows Market connectivity

OMS / EMS

Market data systems Java (15%) Core Java Java debugging Java-based backend systems API integrations Unix / Linux (15%) Shell scripting Log analysis Production troubleshooting System debugging

Preferred Experience:

Strong preference for candidates with backgrounds in Capital Markets, Trading Platforms, Investment Banks, Hedge Funds, Exchanges, Brokerage Systems or similar environments. Nice to

Have:

Kafka Low latency systems Market data platforms Python scripting Production support SRE exposure