Trading Connectivity Engineer | Experienced Hire

Susquehanna is currently looking for a Trading Connectivity Engineer to join our Proprietary Trading Services team. As part of our team, you will be working to support the firm’s core businesses, while gaining broad-based experience across multiple technologies. Troubleshooting is the core of this role When a desk cannot trade, you are the person tasked with resolving the issue — usually with a partial symptom, a live market, and a fault that could be in our application, our configuration, the host, or the exchange. You’re the face of order routing across 700 gateways connecting to 100 distinct venues.

Responsibilities

• You will identify the scope of the issue, gather evidence, restore functionality and close the loop with new documentations, checks or procedures.
• Onboard new exchange connectivity end to end — new venues, sessions, ports and MPIDs — from specification review and requirements gathering through certification testing and production cutover
• Configure and maintain order-routing gateways and their pre-trade risk controls: order and daily quantity and notional limits, self-trade prevention, publication, cancel-on-disconnect and kill-switch behavior
• Verify that the trading environment is ready before the open — test orders, session state, reference data — and be the first response when something is wrong during the day
• rejects, session drops, sequence gaps, missing or delayed messages, latency outliers, unexpected venue behavior.
• Reconstruct what actually happened from logs, packet captures and message archives
• Develop scripts and tools for monitoring the state of the production environment and its dependencies
• Act as a liaison between trading desks, developers, platform teams and other technologists for system-level production issues and new setups

Track externally driven projects to completion

• Provide pre and post trade support for traders, strategists and quantitative researchers
• What we’re looking for 3+ years supporting production electronic trading systems or trading connectivity required
• Working knowledge of the FIX protocol at both the session and application layer — sequence recovery, resend and gap fill, execution report semantics

Requirements

• Exposure to exchange-native binary order-entry protocols (OUCH, Pillar, BOE, etc.) Demonstrated proficiency in scripting languages (Python, bash, shell) Hands-on Linux command line experience – system metrics, logs, Familiarity with observability tooling such as Grafana or Elasticsearch Familiarity with current code generation AI tools
• Working knowledge of SQL Solid networking fundamentals – multicast, routing, firewalls
• Demonstrated production discipline — structured change control, clean incident handling, documentation
• Strong interpersonal and communication skills for working with traders, exchanges, developers and other technologists
• Visa sponsorship for work authorization is not available for this position now or in the future.

Preferred

• Good understanding of financial instruments and markets is a plus