Senior C++ Engineer (Low-Latency Systems) in London
Senior C++ Engineer (Low-Latency Systems)

Senior C++ Engineer (Low-Latency Systems) in London

London Full-Time 43200 - 72000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Design and build high-performance C++ systems for real-time trading.
  • Company: Regulated financial technology platform with a focus on innovation.
  • Benefits: Competitive salary, bonuses, private medical, and hybrid working options.
  • Why this job: Tackle challenging engineering problems that impact live financial markets.
  • Qualifications: Experience in C++ and performance-sensitive software development.
  • Other info: Join a collaborative team with a focus on long-term technology investment.

The predicted salary is between 43200 - 72000 £ per year.

Overview

Company: Regulated financial technology platform

Location: London

Hybrid: 3 days in-office (one fixed team day)

Salary: Competitive (shared early, no games)

Benefits: Bonus, private medical, pension, hybrid working, enhanced family policies, long-term stability

You’ll like this if…

You enjoy working on hard engineering problems where performance actually matters. This is a C++ role where:

  • Systems process very high message rates in real time
  • Latency, determinism, and correctness are critical
  • Software is used every trading day in live financial markets

You won’t be maintaining internal tools or rewriting the same service for the third time. You’ll be building core systems that sit at the heart of a regulated trading platform. You’ll work closely with other senior engineers, infrastructure, and product. Technical decisions are made by people who understand the trade-offs. And you’ll be trusted to get on with it.

What you’ll be doing

You’ll design and build high-performance C++ systems used in production financial markets. That includes:

  • Writing modern C++ (C++11+) with a strong focus on performance and safety
  • Working on networking, messaging, and algorithmic components
  • Debugging and optimising systems under real load
  • Reviewing designs and code with engineers who care about quality

This is deep engineering work, not feature-factory development.

What you’ll need

Keep it simple. You’ve:

  • Built production systems in C++ for several years
  • Worked on performance-sensitive or real-time software
  • Used Linux as your primary environment
  • Dealt with networking concepts (TCP, UDP, multicast, messaging)

Useful but not required:

  • Python
  • Financial or trading systems exposure
  • Some experience with cloud infrastructure

What matters is how you approach complex problems and whether you enjoy solving them.

The environment

You’ll be joining a business that:

  • Operates regulated, mission-critical systems
  • Invests long-term in its technology
  • Values clear thinking, collaboration, and ownership

Hybrid working is practical, not performative. Teams come together to solve problems, not to tick a box.

What happens next

Straightforward and professional: Intro call → technical discussion → meet the team → offer

If you want to work on serious C++ systems without the noise, this is worth a conversation. Confidential, focused, and to the point.

Senior C++ Engineer (Low-Latency Systems) in London employer: Oceanredpartners

As a Senior C++ Engineer at our regulated financial technology platform in London, you'll be part of an established senior engineering team dedicated to solving complex, high-performance challenges in real-time trading systems. We offer a supportive work culture that values collaboration and ownership, alongside competitive benefits including bonuses, private medical care, and enhanced family policies, ensuring long-term stability and opportunities for professional growth in a hybrid working environment.
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Contact Detail:

Oceanredpartners Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Senior C++ Engineer (Low-Latency Systems) in London

✨Tip Number 1

Network like a pro! Reach out to current employees on LinkedIn or attend industry meetups. A friendly chat can give you insider info and maybe even a referral.

✨Tip Number 2

Prepare for technical interviews by brushing up on your C++ skills. Practice coding challenges that focus on performance and low-latency systems. We recommend using platforms like LeetCode or HackerRank.

✨Tip Number 3

Showcase your passion for solving complex problems. During interviews, share specific examples of challenges you've tackled in past projects. This will demonstrate your fit for the role and the team.

✨Tip Number 4

Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, it shows you’re genuinely interested in joining our team.

We think you need these skills to ace Senior C++ Engineer (Low-Latency Systems) in London

C++ (C++11+)
High-Performance Systems Design
Real-Time Software Development
Linux
Networking Concepts (TCP, UDP, Multicast, Messaging)
Debugging and Optimisation
Code Review
Problem-Solving Skills
Collaboration
Ownership
Financial Systems Exposure
Cloud Infrastructure Experience

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights your experience with C++ and any performance-sensitive projects you've worked on. We want to see how your skills align with the real-time systems we build, so don’t hold back!

Craft a Compelling Cover Letter: Your cover letter is your chance to shine! Share your passion for solving complex engineering problems and how you’ve tackled similar challenges in the past. Let us know why you’re excited about working with us at StudySmarter.

Showcase Relevant Projects: If you’ve worked on any high-performance systems or have experience with networking concepts, make sure to include those in your application. We love seeing concrete examples of your work that demonstrate your expertise.

Apply Through Our Website: We encourage you to apply directly through our website. It’s the best way for us to receive your application and ensures you don’t miss out on any important updates from our team!

How to prepare for a job interview at Oceanredpartners

✨Know Your C++ Inside Out

Make sure you brush up on modern C++ features, especially C++11 and beyond. Be ready to discuss how you've used these in performance-sensitive applications, as this role demands a strong focus on both performance and safety.

✨Understand Low-Latency Systems

Familiarise yourself with the principles of low-latency systems and real-time processing. Be prepared to talk about your experience with high message rates and how you've tackled latency issues in past projects.

✨Showcase Problem-Solving Skills

This role is all about solving complex engineering problems. Think of specific examples where you've successfully debugged or optimised systems under load, and be ready to share your thought process during the interview.

✨Engage with the Team's Culture

Since collaboration is key, demonstrate your ability to work well in a team. Share experiences where you've collaborated with other engineers on design reviews or technical decisions, highlighting your clear thinking and ownership.

Senior C++ Engineer (Low-Latency Systems) in London
Oceanredpartners
Location: London
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  • Senior C++ Engineer (Low-Latency Systems) in London

    London
    Full-Time
    43200 - 72000 £ / year (est.)
  • O

    Oceanredpartners

    50-100
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