Role Overview

Liquidnet is looking for a senior level FIX specialist to manage client connectivity to our fixed income trading systems. The team requires a motivated self-starter with strong project management and technical skills to support existing FIX and proprietary API connections and help drive the direction of client connectivity to all Liquidnet Fixed Income trading platforms. This is a hands-on role where the client will utilize their deep understanding of Fixed Income FIX workflows, strong database, Linux and Windows Server knowledge to manage all aspects of client connectivity.

This role will be predominantly based on the Fixed Income desk working directly with the salespeople and interacting with technical teams across the Liquidnet membership. This is an exciting opportunity to join an expanding team focused on developing a strategically important Fixed Income business within Liquidnet. This will be a varied role involving working on a multitude of cross-platform market-leading technologies to support the running of our bespoke trading platform. The successful candidate will also contribute to front-to-back support duties on the Fixed Income platform which will include the daily support of the platform, configuring new members, managing front-end upgrade rollouts and testing of new functionality prior to release to members.

The successful candidate should possess a positive 'can-do' attitude and an intuitively high level of customer service in their approach. This will complement strong FIX, database (MYSQL), as well as Windows Administration and Networking troubleshooting skills (which may also involve firewall/routing issues).

Responsibilities

• Act as a senior escalation point for FIX-related production issues, providing deep technical analysis and resolution across order entry, routing, execution, and post-trade workflows
• Provide expert-level support for FIX connectivity, session management, and message flow across multiple clients and counterparties
• Configure, support, and administer FIX sessions (initiator/acceptor), including certification, onboarding, and ongoing maintenance
• Analyze FIX logs in real time to troubleshoot connectivity issues, message rejects, sequencing problems, latency, and message integrity
• Troubleshoot end-to-end trade flow issues, including drop copy, allocation, and post-trade FIX workflows
• Support ATS member configuration and administration, ensuring FIX settings align with product and regulatory requirements
• Work closely with Development, Low Touch, and Infrastructure teams to drive root cause analysis and permanent fixes
• Partner daily with Sales, Trading, and external clients on FIX-related queries, incidents, and enhancements
• Own and drive incident management for FIX issues, including detailed documentation, trend analysis, and preventative actions
• Support release testing, FIX certification cycles, and major platform upgrades, including out-of-hours or weekend work where required
• Act as a subject-matter expert, mentoring junior analysts and improving FIX support processes and runbooks

Qualifications / Skills

Essential

• 5+ years hands-on production support experience within a financial institution or trading venue, with strong FIX ownership
• Proven expert-level knowledge of the FIX protocol, including message types, tags, sequencing, session states, and custom extensions
• Extensive experience setting up, certifying, and supporting FIX sessions for buy-side, sell-side, and OMS/EMS clients
• Strong understanding of FIX versions (4.2, 4.4, 5.0 SP2) and handling of custom tags and venue specific implementations
• Deep experience troubleshooting FIX connectivity issues and analyzing FIX logs under production pressure
• Solid understanding of Fixed Income products and trading workflows
• Strong Unix / Linux skills for log analysis, scripting, and operational support
• Working knowledge of at least one relational database (MSSQL, Oracle, Sybase, MySQL/MariaDB) with strong SQL query capability
• Good understanding of Windows Server environments
• Strong grasp of networking fundamentals, including firewalls, routing, and latency considerations

Desirable

• Previous experience working at, or closely with, an OMS or EMS vendor
• Experience supporting message-based / event-driven architectures (e.g. Solace, TIBCO, Kafka)
• Hands-on experience with FIX drop copy, allocations, and post-trade workflows
• Exposure to Fixed Income order routing
• Experience leading FIX certification and client onboarding end-to-end
• ITIL Foundation certification and experience working within an ITIL framework
• Experience with scripting or programming languages (e.g. Python, Bash, Perl) for automation and analysis

Band/Level

Manager 6

$190,000-$195,000

#LI-Hybrid #LNET

Location
USA - 200 Vesey Street - New York, NY