Low-Latency Developer

Atto Trading is a dynamic quantitative trading firm founded in 2010, leading in global high‑frequency strategies. We are expanding an international, diverse team of experts in trading, statistics, engineering, and technology. Our disciplined approach combined with rapid market feedback allows us to quickly turn ideas into profit. As a small, nimble firm we hold ourselves to the highest standards of integrity, ingenuity, and effort.

About the role

We are modernizing our trading and research platform to scale our alpha trading business. The platform will enable researchers to explore, test, and deploy sophisticated signals, models, and strategies across asset classes in a robust, fully automated manner while maintaining competitive latency targets. As a Low‑Latency Developer you will design, optimize, and maintain high‑performance trading systems to minimize latency.

Responsibilities

• Analyze and optimize the performance of low‑latency trading systems by identifying bottlenecks and inefficiencies in the code.
• Implement effective solutions to improve latency and overall system performance.
• Develop and adapt the platform to support the demands of a fast‑paced trading environment.
• Manage technical debt while ensuring the platform remains robust and scalable.

Requirements

• Over 5 years of experience as a low‑latency developer focused on performance optimization in a high‑frequency trading (HFT) environment.
• Experience with multiple components of an HFT platform or system, particularly those on the critical path.
• Experience working at an HFT firm during its startup phase and/or on a trading team is a significant plus.

Skills

• Deep knowledge of HFT platforms: networking, kernel bypass, market data, order entry, threading, inter‑process communication, and strategy APIs.
• Proven low‑latency development and performance optimization in HFT.
• Strong proficiency in C++.
• Excellent understanding of CPU caches and cache efficiency.
• Experience with multithreaded and multi‑process synchronization.
• Good understanding of networking protocols.
• Skilled in performance profiling and optimization tools.
• Advanced knowledge of Linux operating systems, including kernel‑level device mechanisms.
• Demonstrated ability to leverage modern AI tools (e.g., generative AI, code assistants, research and productivity tools) to improve quality, speed, decision‑making, and workflow efficiency while maintaining strong judgment, accuracy, and ownership of outcomes.

Qualifications

• Practical decision‑making skills.
• Excellent communication skills.
• Strong analytical and problem‑solving abilities.
• Passion for trading.
• Ability to work independently and as part of a team.

Benefits

• Competitive compensation package.
• Performance‑based bonus opportunities.
• 401(k) plan.
• Mental health support, including access to therapy.
• Paid time off (25 days).
• Relocation support (where applicable).
• International team meet‑ups.
• Learning and development support, including courses and certifications.
• Access to professional tools, software, and resources.
• Fully equipped workstations with high‑quality hardware.
• Modern office with paid lunches.

Pay

Annual base salary range of $150,000 to $300,000. Pay (base and bonus) may vary depending on job‑related skills and experience.