Market Access System Engineer

As the founding entity of RAINBOW PARTNERS, Quanteam is a consulting firm specialized in Banking, Finance, and Financial Services. Through our core human values – proximity, teamwork, diversity, excellence – our 1000 expert consultants, hailing from 35 different nationalities, collaborate across 13 international offices: Paris, Lyon, New York, Montreal, London, Brussels, Luxembourg, Geneva, Lisbon, Porto, Casablanca, Madrid and Singapore.

Relocation Opportunity for French Professionals

Context

We are seeking several Market Access System Engineer to join our clients, leading Investment Banks, in Manhattan, New York. This position plays a key role in supporting and improving a high-performance trading infrastructure, ensuring stability, reliability, and efficiency within a demanding and fast-moving financial markets environment.

Key Responsibilities

• Maintain and continuously improve a high-throughput trading platform built on modern, low-latency technologies, processing millions of transactions each day along with large volumes of real-time market data.
• Diagnose and resolve complex technical incidents and user issues quickly and effectively to minimize disruption to trading activity.
• Monitor platform health and performance, implement optimizations, and perform capacity planning to meet strict latency and reliability requirements.
• Support and maintain proprietary systems responsible for order routing, market data feeds, pre-trade risk controls, and trade reporting.
• Provide direct technical support to U.S.-based traders operating a variety of strategies across multiple asset classes.

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• Coordinate with exchanges and trading venues to onboard and integrate new connectivity and services.
• Work closely with global technology teams to ensure alignment and efficient delivery of platform improvements.
• Contribute to the design, development, and rollout of new Market Access capabilities that support evolving business needs.

Required Skills

• Strong experience with Unix/Linux administration, including troubleshooting and scripting (Shell and/or Python).
• Solid understanding of networking fundamentals, such as TCP/IP, routing, and multicast.
• Experience managing Windows environments, including job scheduling/maintenance and network diagnostics.
• Working knowledge of databases, particularly MySQL, and the ability to write and run basic queries.
• Understanding of equity and derivatives products (e.g., Options, Futures, Warrants, Indexes, ETFs).
• Familiarity with U.S. financial markets, including major exchanges and ECNs.