C++ Application Developer
Hybrid
London, United Kingdom
Full Time
14-03-2025
Job Specifications
LMAX is looking for a C++ Application developer to form the basis of our quantitative risk development team. This team works closely with the operations, risk management and liquidity teams to operate a small amount of proprietary risk for the business. In this position you can expect to take a significant role in the development process of our order management software. A finance and/or trading background is not required.
What you will be working on
The majority of our codebase is written in C++, a language which the team has a passionate interest in Design You will be working with other members of the team, both technical and nontechnical, to identify, design and implement new features for our trading system.
Design
We are looking for developers who are confident in their ability to develop software, both with others and on their own.
Performance
Working on financial trading software brings some interesting technical challenges in the areas of throughput and latency. Working here you can expect to focus more directly on software performance than at other organisations, while striving to produce code that is easily maintainable. Developing in this area you can expect to be performing investigative work, digging deep into our system to understand how it works, and how it can be improved. You can also expect to develop performance benchmark tests to monitor how are software's performance is improving over time.
Production Support
Our software runs 24x7, so some element of out of hours and On Call may be required.
Main Duties and Responsibilities:
• Produce clear, well-structured and fully tested C++ code.
• A focus on writing low latency software in the hot-path areas of our system.
• Integrate into third party APIs internal APIs and a small amount of UI development for internal use.
• Spread knowledge throughout the team to avoid siloing. This is a highly collaborative team and you can expect to be working on new software features closely alongside other developers, using pair programming to increase the spread of knowledge.
• Support live quantitative order management applications.
Testing
We rely heavily on validating our system using our extensive test suites. We test at all levels of our system from unit testing to full end-to-end tests in which the entire system is launched and tested in a simulated environment. All tests are run every 20 minutes on our CI to give us a fast and reliable feedback cycle. There is no waiting for overnight test suites here. As a developer at LMAX you will be expected to help maintain our test framework so that we can continue to develop high quality code at speed
Requirements
Essential Skills / Experience
• C++ development on a Linux/UNIX environment.
• Automated C++ Testing.
• Version Control Systems.
• Ability to understand business requirements and develop systems to meet them.
• Ability to design well documented, simple and elegant systems which are easily maintainable. • Ability to work independently and with little guidance.
• A finance and/or trading background is not required. #
Desirable Skills / Experience
• Test driven development, with experience in testing at different levels of the system (unit, integration and acceptance tests)
• Continuous Integration (Jenkins).
• FIX API and binary market data protocols.
• Knowledge of Websocket, TCP/IP and multicast networking
• Interest in statistical modelling.
• Science or Maths related degree
Benefits
25 days of holiday
Bonus
Pension contribution
Private medical, dental, and vision coverage
Life assurance
Critical illness cover
Wellness contribution program with access to ClassPass
Plumm Platform
Five volunteering days
Give as You Earn initiative
Learning and development programs
Electric Vehicle Scheme
Cycle to Work Scheme
Season Ticket Loan
About the Company
The LMAX Group is the leading independent operator of institutional execution venues for FX and digital assets trading. LMAX Group is unique in offering market access to all FX customer segments, transforming the world’s largest asset class to an open, transparent marketplace with fair, precise & consistent execution. LMAX Group services funds, banks, asset managers and retail brokerages in over 100 countries. The Group builds and runs its own high performance, ultra-low latency global exchange infrastructure, which include... Know more
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