Software Engineer - C++

Location: New York, NY - FiDi

Department: Engineering

Location Type: IN_OFFICE

Employment Type: FULL_TIME

Human Intuition. Machine Intelligence. Relentless Exploration.

The Role

The Team

Responsibilities

• Design and Own Trading Systems: Take strategic ownership of critical trading infrastructure, driving projects from initial whiteboard design all the way through to deployment and production support.
• Engineer for Extreme Performance: Optimize systems that process and react to real-time data streams. Evolve our performance posture by leveraging hardware-level optimizations, kernel bypass, and deep memory management to ensure microsecond-level execution.
• Build Execution Logic: Develop, refine, and maintain order matching systems, execution logic, and major venue gateways across multiple asset classes.
• Empower the Flywheel of Discovery: Work side-by-side with quantitative researchers and traders. Build robust test harnesses and data analysis pipelines to help the business rapidly iterate on new signals and strategies.
• Drive Architectural Excellence: Ensure our codebase scales efficiently by making pragmatic, forward-looking architectural decisions and championing modern C++ best practices.

The Tech Stack

• Languages: Primarily C++23 and Python for scripting, test harnesses, and data analysis.
• Infrastructure: Linux, with a deep focus on OS internals and memory management.
• Networking: Low-latency networking protocols and hardware (e.g., Solarflare, kernel bypass).

You Bring

Requirements

• Experience: 5+ years of relevant software engineering experience with clear progression in system complexity and architectural decision-making.
• Modern C++ Expertise: Expertise in modern C++ on Linux, with a deep understanding of memory management, concurrency, and templates.
• Onsite Collaboration: A willingness to work onsite in our office 4 days a week.

Strongly Preferred

• Industry Experience: Background in finance, electronic trading, or market-making.
• Market Fluency: Breadth across multiple asset classes OR knowledge of global market nuances (beyond US Equities).

Extras

• Domain Knowledge: Experience with order matching, execution logic, and major venue gateways.
• Hardware & Systems Optimization: Exposure to distributed systems, kernel bypass, or hardware-level optimizations, as well as experience optimizing systems that process and react to real-time data streams.
• Database Experience: Experience with relational databases (e.g., PostgreSQL).
• End-to-End Delivery: A track record of taking systems from whiteboard design all the way through to deployment and production support.
• Python Proficiency: Familiarity with Python, particularly for building test harnesses, data analysis, or interacting with quantitative researchers.

Ideal Profile

• Technical Curiosity & Pragmatic Ownership: You have a relentless drive to understand how things work under the hood, but you balance that with a hands-on, pragmatic approach to delivering commercial solutions.
• Attention to Detail: In trading, accuracy and reliability are paramount. You approach every engineering problem with a focus on uncompromising reliability and handling edge cases gracefully.
• Collaborative Orientation: You are energized by working closely within a team, communicating clearly across research and trading desks, and focusing on collective success.
• Driven by Impact: You take deep satisfaction in seeing your work have a direct, measurable effect on our P&L and operations.

We Offer