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# Senior C++ Developer | HFT Trading Systems

- **Company:** Selby Jennings
- **Location:** London, UK
- **Experience:** Expert
- **Salary:** £105,001.0
- **Contract:** Permanent contract
- **Skills:** Algorithmic Trading, C++ (Programming Language), Cloud Engineering, Profiling, Computer Programming, Data Structures, Linux, Distributed Systems, Fault Tolerance, Field-Programmable Gate Array (FPGA), Python (Programming Language), Multicasting, Performance Tuning, Remote Direct Memory Access, System Availability, Containerization, Solid Principles, Kubernetes, Low Latency, Hardware Acceleration, Docker
- **Published:** July 29, 2026
- **Apply:** https://www.adzuna.co.uk/jobs/details/5819149453

## About the Role

* Strong grounding in algorithms, data structures, distributed systems, and software design principles.
 * Expert-level C++ (modern standards such as C++20/23), alongside experience with Python and/or other modern languages (e.g. Rust).
 * Proven experience building and optimising low latency, high throughput systems within a production trading environment.
 * Solid understanding of networking (TCP/UDP, multicast), Linux systems programming, and performance profiling tools.
 * Familiarity with testing frameworks, CI/CD pipelines, and approaches for designing robust, fault-tolerant systems.
 * Strong communication skills, with the ability to operate effectively in a fast-paced, globally distributed team., * Background working on systematic or algorithmic trading systems within a hedge fund, proprietary trading firm, or investment bank.
 * Exposure to hardware acceleration concepts (FPGA, kernel bypass, RDMA) and ultra-low latency networking stacks.
 * Experience with cloud-native tooling and containerisation (e.g. Kubernetes, Docker) in hybrid environments.

## Description

* Design & Development: Architect, build, and optimise low latency trading components and supporting infrastructure, with a strong emphasis on performance, reliability, and scalability.
 * Market Access: Develop and maintain exchange connectivity across global venues. Work on order management systems (OMS), including order routing, risk controls, and real-time state handling.
 * Performance Tuning: Profile, benchmark, and continually refine systems to achieve ultra-low latency and high throughput.
 * Collaboration: Partner closely with quantitative researchers, systematic PMs, traders, and other engineers to deliver robust, production-ready solutions.
 * Reliability: Maintain high availability and resilience across trading systems, including involvement in on-call support where required.
 * Greenfield build out: Contribute to the evolution of the platform by evaluating new technologies and implementing best practices to keep the stack competitive.


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