Senior Rust Engineer — Ultra-Low Latency Quant Trading

Citi; New York (NY); On-site; USD 175,000 - 250,000; Full time

Job summary

Citi is seeking a Senior Rust Engineer to join the NAM Equities Cash Quant team. You will design, develop, and optimize ultra-low-latency trading platforms and algorithmic execution engines using Rust, with collaboration across quantitative researchers and trading desks.

You will drive the adoption of AI, integrate LLM-assisted development, and contribute to model development, backtesting, and market simulations while ensuring risk governance and compliance within Citi's control framework.

Qualifications

• 3+ years in systems programming with Rust or production Rust experience.
• Experience in financial trading environments preferred.
• Knowledge of AI-assisted software development lifecycle is highly preferred.

Responsibilities

• Design, develop, benchmark, and optimize ultra-low-latency trading platforms and engines using Rust.
• Collaborate with researchers and traders to translate models into production software.
• Drive AI/Lang Model integration into the software development lifecycle and automated testing.

Skills

Rust

Low-latency

Concurrency

C++/Java

Quantitative finance

Education

Master's or PhD in CS/Engineering/Math/Finance

Tools

Tokio

FIX/ITCH/OUCH/SBE

KDB+/Polars

Job description

Citi is seeking a Senior Rust Engineer to join the NAM Equities Cash Quant team. You will design, develop, and optimize ultra-low-latency trading platforms and algorithmic execution engines using Rust, with collaboration across quantitative researchers and trading desks.

You will drive the adoption of AI, integrate LLM-assisted development, and contribute to model development, backtesting, and market simulations while ensuring risk governance and compliance within Citi's control framework.