C++ developer (UK)

4ire Labs Ltd; United Kingdom; Remote; GBP 90,000 - 140,000; Full time

Job summary

4ire Labs Ltd is seeking a Senior C++ Developer to design, develop, and optimize ultra-low latency trading systems and a new analytics library. You will work with traders and researchers to improve market data processing, execution systems, and real-time infrastructure.

You will own major aspects from concept to launch, applying best practices and building scalable distributed components. Strong C++20, Linux, and performance tuning skills are essential, with collaboration across a diverse team.

Qualifications

• At least a BSc in Computer Science or related field.
• Strong fundamentals in data structures and algorithms.
• Mastery of modern C++20 language features.
• Experience with Linux and performance debugging tools.
• Familiarity with distributed APIs, messaging, and market data protocols such as FIX/ITCH.
• Excellent collaboration and continuous self-improvement mindset.

Responsibilities

• Develop best-in-class distributed systems to efficiently process financial market data.
• Resolve ambiguity, analyze complex requirements and break down features into tasks.
• Navigate trade-offs between MVP and enterprise-grade solutions, time-to-market considerations.
• Apply engineering best practices, including unit, integration, end-to-end, stress and performance testing.

Skills

C++20 mastery

Linux experience

Performance tuning

Latency optimization

Distributed systems

Market data protocols

Python scripting

Design patterns

Data structures

OO & FP styles

Algorithms basics

Education

BSc Computer Science or related

Degree in STEM/CS

Job description

As aSenior C++ Developer, you will design, develop, and optimizeultra-low latency trading systems, working closely with traders and quantitative researchers. You will be instrumental in improvingmarket data processing, execution systems, and real-time trading infrastructure.

About the role:

You’ll build a new analytics library from concept to launch, using the latest technologies and taking ownership of key aspects of design, coding, testing and deployment

What you’ll do:

• Develop best-in-class distributed systems to efficiently process financial market data
• Effectively resolve ambiguity, analyze complex requirements and break down features and initiatives into tactical tasks
• Navigate trade-offs effectively across MVP vs. enterprise-grade, time-to-market and other relevant dimensions
• Apply engineering best practices, including unit, integration, end-to-end, stress and performance testing
• Search for the truth in product conceptualization and development, ensuring designs and implementations are fully aligned with the project mission and product goals

Skills:

• At least a BSc in Computer Science or related field
• Software development experience, including mastery of modern C++20 language fundamentals (examples: static member functions, virtual functions, lambdas, move operators, and the various kinds of reference types)
• Strong computer science and programming fundamentals (data structures, algorithms).
• Demonstrates good judgment in the application of imperative, OO and functional styles
• Mastery of core engineering concepts, including design patterns, frameworks, best practices, run-time optimizations and algorithmic complexity
• Solid understanding of concepts like load balancing, HA/failover, ingress, egress, inter-service communications, idempotence, ACID, guaranteed delivery, etc.
• Technical expertise with distributed APIs, connectivity technologies such as message distribution, publish/subscribe, queuing, TCP, UDP, multicast. FIX, ITCH or equivalent market data protocol experience is desirable
• Able to understand and articulate the architecture of an entire system, including the technical trade‑offs between different design implementations
• Eager to work openly and collaboratively with a diverse multi-disciplinary team.
• Effective collaboration with stakeholders
• Dedicated to continuous self‑improvement - constantly seeking to learn new technologies, innovate and discover better ways to solve engineering challenges
• Keen to solve engineering challenges of high performance trading systems and APIs, including performance tuning and latency optimizations
• of data structures, algorithms, and computer architecture.
• Experience working in a Linux environment with performance tuning and debugging tools.
• Scripting proficiency (Python, Bash) for automation and testing.
• Degree in Physics, Engineering, Mathematics, STEM, or Computer Science from a top university.