C++ Engineer - Selby Jennings

Who We Are

Our client is a global quantitative hedge fund operating across major liquid asset classes worldwide. The firm combines technology, data, research, and trading expertise to drive investment decisions, with highly performant trading systems forming the backbone of its global platform.

Engineering teams work closely with traders and researchers to build, support, and continuously improve the systems responsible for order execution, market data processing, and real-time trading operations.

We welcome applicants from across the globe. Relocation support will be provided for suitable candidates.

We Are Seeking: Trading Systems Reliability Engineer (C++)

We are seeking pragmatic and commercially-minded engineers who combine strong technical troubleshooting skills with solid C++ development experience .

This role sits at the intersection of software engineering, production reliability, and trading infrastructure , helping ensure critical systems remain reliable, performant, and scalable in a fast-moving production environment.

Experience working within buy-side firms, hedge funds, proprietary trading firms, or other performance-sensitive environments is highly valued.

Key Responsibilities

• Design, build, and maintain reliable and scalable production systems
• Monitor, troubleshoot, and optimise system performance
• Partner with development teams to improve platform reliability and operability
• Develop automation and tooling to streamline operational workflows
• Support production environments and investigate complex technical issues
• Contribute to platform stability, security, and operational best practices
• Provide technical guidance and support across engineering teams

Requirements

• Experience in Site Reliability Engineering, Production Engineering, Systems Engineering or similar roles
• Strong C++ development experience
• Solid understanding of systems architecture and distributed environments
• Experience troubleshooting production systems in live environments
• Familiarity with monitoring, logging, and observability platforms
• Excellent problem-solving and analytical skills
• Ability to operate effectively in fast-paced, high-pressure environments
• Commercial mindset with a focus on reliability and business outcomes

Highly Relevant Experience

• Buy-side, hedge fund, or proprietary trading environments
• Low-latency order entry or market data systems
• Production trading infrastructure
• Additional programming experience in Python or C#
• Performance tuning and systems optimisation
• Finance, capital markets, or trading technology environments

What We're Looking For

• Strong troubleshooter who enjoys investigating complex problems
• Engineer who understands both technical and business impact
• Individual who prefers solving root causes over temporary fixes
• Comfortable working across software, systems, and operations domains
• Strong ownership mentality and attention to detail

Why Join Us

• Work directly on systems supporting real-time trading activity
• Combine software engineering with production reliability responsibilities
• Exposure to low-latency and performance-sensitive environments
• Collaborate with highly technical teams across trading and engineering
• Opportunity to have a direct impact on platform reliability and performance

Selby Jennings is a Trading Style of Phaidon International (License Number 16S8194)