Fix Client Onboarding, Senior

Key responsibilities including but not limited to: Serve as the senior technical consultant for FIX Protocol connectivity (FIX 4.2 / 4.4) , electronic trading platforms, and messaging infrastructure. Provide Level 2/Level 3 production support for trading applications, ensuring maximum system availability and minimal downtime. Lead the investigation, troubleshooting, and resolution of production incidents, connectivity issues, and client-reported problems within defined service levels. Conduct root cause analysis (RCA), recommend permanent fixes, and drive continuous service improvements to enhance platform stability. Collaborate with clients, trading desks, business stakeholders, vendors, and internal engineering teams to resolve complex technical issues. Manage end-to-end client onboarding, FIX certification, connectivity testing, session configuration, and production readiness. Monitor application health, trading connectivity, and system performance using logs and monitoring tools to proactively identify operational risks. Perform Unix/Linux system administration, diagnostics, scripting, and operational support across production environments. Participate in system implementations, infrastructure upgrades, production deployments, and release management while ensuring minimal business disruption. Develop and maintain technical documentation, operational procedures, knowledge articles, and support runbooks. Provide technical leadership, mentor junior consultants, and contribute to best practices for support processes and operational governance. Work effectively under tight project timelines and within high-pressure production environments supporting global financial markets. Job requirements: Bachelor's Degree in Computer Science, Information Technology, Engineering, or a related discipline. 5–10+ years of experience supporting electronic trading systems, FIX connectivity, or capital markets applications. Strong working knowledge of FIX Protocol 4.2 and 4.4 , including session management, order lifecycle, and message flows. Solid experience supporting mission-critical production environments within financial services or capital markets. Good knowledge of Unix/Linux operating systems, shell scripting, log analysis, and troubleshooting methodologies. Experience with client onboarding, FIX certification, connectivity testing, and production implementation. Strong analytical, troubleshooting, and root cause analysis skills. Excellent stakeholder management with proven experience engaging clients, business users, vendors, and technology teams. Ability to manage multiple priorities and deliver high-quality outcomes within tight deadlines. Excellent written and verbal communication skills.