At a Glance
- Tasks: Diagnose production issues and prototype new trading features in a fast-paced environment.
- Company: Join a leading European stock exchange operator with a focus on innovation.
- Benefits: Competitive salary, flexible working hours, and opportunities for professional growth.
- Other info: Dynamic team culture with mentorship opportunities and exciting challenges.
- Why this job: Be at the forefront of trading technology and make a real impact every day.
- Qualifications: 10+ years in C++ development and strong networking fundamentals required.
The predicted salary is between 66150 - 80850 £ per year.
Referment is working with a regulated European stock exchange operator whose Rapid Application Development (RAD) team sits at the intersection of troubleshooting, prototyping and operational efficiency.
Unlike the low-latency team that builds the matching engine itself, this small team investigates the toughest production issues, validates new trading technology through rapid prototyping, and builds the internal tools and test frameworks that keep the exchange running smoothly.
The Role
One day you'll be diagnosing an intermittent issue in how high-volume order processing behaves; the next, you'll build a proof of concept for a new trading feature or design a performance test suite that simulates real market stress.
You'll establish reproducible test cases and diagnostic harnesses to validate root causes, communicate findings clearly to non-technical teams (QA, Product, Sales), and document root causes for the wider engineering group.
You'll also build internal tools - test suites, benchmarking frameworks, reproduction environments, diagnostic utilities and dashboards - that help Ops and QA resolve issues faster.
As a senior member of the team you'll mentor mid-level engineers, set RAD engineering standards for MVP development, testing and deployment automation, and act as a subject-matter expert in design and architecture discussions.
What We're Looking For
- 10+ years of professional development with C++11 or later, building performant, scalable production applications.
- 6+ years of hands-on networking fundamentals (UDP, multicast, TCP) and messaging systems.
- 6+ years on Linux, including kernel concepts, system tuning and debugging tools (gdb, strace, perf).
- Proven production troubleshooting: diagnosing complex issues via logs, memory dumps or instrumentation, and explaining them to mixed audiences.
- Strong CI/CD, automated testing, code review and Git discipline; SQL for querying and analysis.
- Comfortable with Kanban, Jira and shipping MVPs fast without perfectionism stalling progress; proficient with AI coding assistants and LLM-based tooling.
Desirable: Python and Bash scripting, performance profiling (flame graphs), test infrastructure or load-testing experience, capital markets knowledge (FIX, market data), Docker basics, and time-series or version-controlled database exposure.
This could suit a senior C++ engineer with low-latency or capital markets experience who enjoys detective work as much as greenfield development, and wants a role where investigation and prototyping are the day job rather than a distraction from it.
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Low Latency Software Engineer - C++ (0D2A48F) in London employer: Referment
Referment is an exceptional employer, offering a dynamic work culture that fosters collaboration and innovation. As a Finance Director, you will not only lead the finance function but also play a pivotal role in shaping the company's growth trajectory, with ample opportunities for professional development and advancement. Located in a vibrant B2B technology hub, the company provides a supportive environment where your contributions are valued and rewarded.
StudySmarter Expert Advice🤫
We think this is how you could land Low Latency Software Engineer - C++ (0D2A48F) in London
✨Join Local Tech Meetups
Get out there and mingle with fellow developers by joining local tech meetups. It’s a fantastic way to meet people who might be working at Referment or know someone who does. Plus, you can pick up some trendy tech skills and trends while you're at it!
✨Contribute to Open Source Projects
Show off your coding chops by jumping into open-source projects. Not only does this give you practical experience, but it also gets you noticed in the dev community. You'll create a killer portfolio that speaks volumes about your skills to Referment.
✨Tap into Online Developer Communities
Don’t underestimate the power of online developer communities like GitHub, Stack Overflow, and even Reddit. Participate in discussions, share your projects, and build your visibility. We can often find opportunities through these channels that can lead to a full-time gig at companies like Referment.
✨Explore Job Boards Specifically for Tech Roles
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We think you need these skills to ace Low Latency Software Engineer - C++ (0D2A48F) in London
Some tips for your application 🫡
Show off your coding skills:When applying for a software engineering role, it's super important to showcase your coding skills. Make sure your CV includes your tech stack, any relevant programming languages you’re comfortable with, and examples of projects you've worked on. If you have a GitHub profile, link it up! We love to see code in action.
Tailor your portfolio:For a full-time role, we’d expect to see some solid examples of your work in your portfolio. Make sure to include at least two or three projects that highlight your problem-solving skills and your ability to work with different technologies. Focus on the projects that are most relevant to the position at Referment.
Craft a killer cover letter:Your cover letter is your chance to stand out—make it personal! Explain why you want to work at Referment and how your skills align with the role. Show us your passion for software development. We dig enthusiastic candidates who understand the value of collaboration and continuous learning!
Be clear and concise:When it comes to writing your CV and cover letter, clarity is key. Avoid jargon that could confuse us and stick to simple, direct language. Highlight your achievements with quantifiable results where possible, and keep everything easy to read. A well-organised application goes a long way!
How to prepare for a job interview at Referment
✨Brush Up on Your Coding Skills
For a full-time software engineering role, it's crucial that we stay sharp with our coding abilities. Expect technical questions that might involve solving problems on the spot or discussing algorithms. Practise on platforms like LeetCode or HackerRank to get comfortable with the types of questions that often come up.
✨Know Your Tools and Frameworks
Make sure we’re well-acquainted with the tools and technologies listed in the job description. Familiarise ourselves with any specific frameworks or programming languages mentioned. If Referment uses React or Node.js, for instance, be ready to discuss how we’ve used them in previous projects or coursework.
✨Showcase Your Projects
Bring along a portfolio that highlights our best work. This could be code samples, GitHub repositories, or any side projects we’ve built. Make sure we can talk through our thought process for each project, especially the challenges we faced and how we solved them—this shows our problem-solving skills in action.
✨Prepare for Behavioural Questions
While technical skills are key, full-time positions also require cultural fit. Be ready to discuss our previous experiences and how we handle teamwork, conflict, and deadlines. Brush up on the STAR method—Situation, Task, Action, Result—to clearly articulate our past experiences when discussing how we've contributed to a team.
