C++ Data Platform Engineer - High-Performance Systems

WorldQuant LLC; Greater London; On-site; GBP 65,000 - 90,000; Full time

Job summary

WorldQuant LLC invites you to join a team that designs and builds high-performance, time-series data platforms in C++. You will contribute to storage engines, RPC layers, and distributed coordination while collaborating with researchers and portfolio managers.

We look for hands-on engineers with strong CS fundamentals, experience in modern C++, and comfort in UNIX environments. Knowledge of AI-assisted coding tools is a plus, and clear communication across a global team is essential.

Qualifications

• Degree in Computer Science or a related field.
• 2+ years of professional software engineering experience.
• Strong fundamentals in data structures, algorithms, and systems-level thinking (memory management, concurrency, I/O).
• Proficiency in modern C++ (C++11 or higher); comfort with STL.
• Solid working knowledge of UNIX/Linux development environments.
• Experience using AI-assisted coding tools (e.g., Claude Code, OpenCode) to accelerate development.
• A clear, proactive communicator who works well with a globally distributed team.

Responsibilities

• Design, develop, and maintain core components across our distributed storage, compute, and service platforms - including storage engines, query and compute execution, RPC/networking layers, and distributed coordination (routing, partitioning, replication).
• Partner with internal stakeholders across research and engineering teams to translate data-access, compute, and performance requirements into concrete design and implementation work.
• Investigate and resolve production issues - from correctness bugs to performance regressions.
• Participate in code review, system design, feature development, and productionization.

Skills

C++

UNIX/Linux

Data structures

Algorithms

Concurrency

Memory management

I/O

STL

AI-assisted coding tools

Education

Bachelor's degree in Computer Science or related field

Tools

Claude Code

OpenCode

RPC frameworks

Job description

WorldQuant LLC invites you to join a team that designs and builds high-performance, time-series data platforms in C++. You will contribute to storage engines, RPC layers, and distributed coordination while collaborating with researchers and portfolio managers.

We look for hands-on engineers with strong CS fundamentals, experience in modern C++, and comfort in UNIX environments. Knowledge of AI-assisted coding tools is a plus, and clear communication across a global team is essential.