Low Latency C++ Developer (Financial Services)

At Data Intellect it has never been just about data or technology, they are our tools. It’s about human intellect, collaboration and providing solutions for the most complex of challenges. We do this by living the DI code: We are Problem Solvers who are Humble, possess a Can-do Attitude with a focus on Togetherness.

As a Senior C++ Developer at DI, you will focus on developing Front Office Trading software, primarily working within the market data development teams. You will gain exposure to the full software stack, using modern development tools and concepts to deliver high quality, best practice software solutions. This will involve working on the end-to-end development of low latency software components written in C++. Project responsibilities will range from Design, Architecture and Development of greenfield projects to maintenance, latency tuning and enhancements.

You will have the opportunity to take the lead on projects, mentor and support junior members of the team, and have a key input in the development of the team moving forwards. We’re hiring C++ Low Latency Engineers who thrive on solving real-time performance challenges. If you know what it takes to build a high-performance feed handler — and you obsess over every microsecond from network packet arrival to order book update — we want to hear from you!

We’re looking for people with experience of the following:

• Expertise in UDP Multicast & TCP feed handling
• Direct experience with kernel bypass technologies
• Deep understanding of accelerated message parsing
• Ability to design lock-free, zero-copy data pipelines
• Strong grasp of CPU affinity, NUMA optimisation & real-time tuning
• Experience with low-latency shared memory
• Hands-on with PTP time synchronisation and nanosecond time stamping
• Comfortable in environments where failure recovery & gap detection are mission-critical
• Pragmatic about asynchronous logging and performance profiling under real-world loads

This is not your average C++ role — you’ll work at the heart of real-time financial markets, where performance isn’t a bonus — it’s everything. If you live for that blend of deep technical challenge, relentless optimisation, and real-world impact, apply today or contact us directly to start the conversation.

What we offer:

• Flexible working – we offer hybrid working so our people can achieve that elusive work/life balance.
• Professional development – we offer extensive training, ranging from leadership to specific technical skills.
• Progression opportunities - we run a biannual promotion process. Monthly 121s with your People Leader provides support to guide you and your career in the right direction.
• International travel opportunities – we offer the opportunity to work internationally, with teams in Belfast, London, New York, Hong Kong & Singapore.
• Healthcare cover – provider is dependent on region, UK is provided by Benenden Health, including 24/7 GP Service & Mental Health Helpline to give you peace of mind when it comes to your health.
• Generous referral scheme – we love to see referrals and referring a friend means cash for you!
• Regular social events, prizes and giveaways – our talented social committee work hard all year round to provide exciting events across all regions to promote our value of togetherness.

Data Intellect is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. Accommodations are available on request throughout the assessment and selection process.