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# Senior / Staff Software Engineer - Algorithmic Execution Platform

- **Company:** Clear Street
- **Location:** New York, NY, United States
- **Experience:** Expert
- **Salary:** $200,000.0 - $350,000.0
- **Contract:** Permanent contract
- **Skills:** Application Programming Interfaces (APIs), C++ (Programming Language), Cloud Computing, Data Structures, Linux, Financial Information EXchange, Python (Programming Language), Routing, Performance Tuning, Software Engineering, Containerization, Kubernetes, Information Technology, Low Latency
- **Published:** October 27, 2026
- **Apply:** https://www.careerbuilder.com/job-details/senior-staff-software-engineer-algorithmic-execution-platform-new-york-ny--706f678e-fae3-45b0-8bee-93e8cfc3f704

## About the Role

Software Engineering, Algorithms, Financial Services, Capital Markets, Data Modeling, Cloud Computing, Application Programming Interface (API), Customer Experience, Trading/Stockbroking, Finance, * 7+ years of experience building high-performance, low-latency systems in C++ in a production environment

 * Deep knowledge of FIX protocol (4.2/4.4) and the full order lifecycle - entry, routing, execution, cancellation, and reporting
 * Experience with exchange market data protocols (ITCH, OUCH, binary feed formats) and building production-grade feed handlers
 * Strong understanding of low-latency architecture - kernel bypass, lock-free data structures, CPU affinity, memory layout, and hot-path profiling
 * Experience with multicast messaging (Aeron, LBM, or equivalent publish/subscribe transport)
 * Solid grasp of U.S. equity market structure: order types, Reg NMS, venue routing, lit and dark pools
 * Comfortable working in Linux, including performance tuning at the OS level
 * Bachelor's degree or higher in Computer Science, Engineering, Mathematics, or a related STEM field

Nice To Haves:

 * Experience building algorithmic execution or SOR infrastructure at a broker-dealer, prop firm, or exchange
 * Familiarity with options or futures execution infrastructure
 * Experience with pre-trade risk system design - firm-level and account-level controls
 * Knowledge of CAT reporting requirements and how they shape system design
 * Experience building platforms designed to service multiple asset classes from a shared execution layer
 * Exposure to international markets and cross-region system design
 * Experience with fractionalization and/or internalization
 * Proficiency in Python for internal tooling and test infrastructure
 * Familiarity with containerization and Kubernetes-based deployment

## Description

This is a core infrastructure role on a small, focused team, based hybrid (4 days in office) out of New York, NY or Lisle, IL. You will be one of the foundational engineers shaping and building our new execution platform - a low-latency, C++-based system with client-facing FIX connectivity, institutional-grade risk controls, and deep integration across U.S. exchanges and dark venues.

 * Client-facing FIX gateway - design and harden the FIX acceptor that serves as the primary inbound order entry point for institutional clients; own the full order lifecycle including order entry, fills, ACKs, rejects, and outbound sequencing
 * Market data infrastructure - build and maintain production-grade feed handlers for exchange protocols (ITCH, OUCH, binary) across major U.S. exchanges and ATSs, replacing legacy market data dependencies with proprietary, low-latency infrastructure
 * Execution and venue connectivity - build and optimize the venue connectivity layer; own latency profiling and hot-path analysis from order receipt through exchange acknowledgment
 * Pre-trade risk controls - architect and implement real-time risk checks with a clear understanding of where each check sits in the critical path; balance correctness guarantees with microsecond-level latency budgets
 * Platform infrastructure - contribute to configuration and command & control architecture, normalized internal message representation, and audit-trail logging systems
 * Algorithmic strategy migration - over time, help move existing algorithmic strategies off legacy infrastructure onto the new platform - component by component, with the current solution running until it is fully replaced

As the core platform stabilizes over the next 12-24 months, you will have the opportunity to contribute to a broader roadmap - including a research and backtesting environment, expansion into additional asset classes (options, futures, FX, crypto), and support for international markets including Europe and Canada. The platform is designed to support all of this from a shared execution layer. The engineers hired now will shape what that looks like.

What We Value:

 * Engineers who are biased toward action and make sound tradeoffs with incomplete information
 * Deep ownership - you care about correctness and performance well beyond your immediate scope
 * Strong communication across engineering, trading, and operations
 * A willingness to challenge assumptions and raise the bar on how we build