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Barclays Logo Barclays · IT - Software Development

Quant Prime Brokerage Services C++ Developer

Japan, Tokyo · Job Posted March 26, 2026
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Job Description

Join us a C++ developer for designing and developing ultra-low-latency end-to-end Direct Market Access (DMA) trading platform. As a Barclays Developer within Equities QPS (Quantitative Prime Services) Technology, you will join a team focused on building out the functionality and technology of the SubM , SUBM-R, SubM Native systems for our flagship product offering for giving ultra-low latency to a very niche domain of very high volume and low latency sophisticated Equites trading clients, mostly Hedge funds as well as develop Cash Connectivity Platform for our Equities Cash Business.

Job Responsibility

  • Design and develop ultra-low-latency end-to-end Direct Market Access (DMA) trading platform
  • Build out the functionality and technology of the SubM, SUBM-R, SubM Native systems
  • Develop Cash Connectivity Platform for our Equities Cash Business
  • Help with the design and development of industry-leading, ultra-low-latency Equities trading systems
  • Take up the full responsibility and drive multiple deliveries at a time
  • Work closely with existing leads to review current platform architecture and propose and implement changes geared towards performance improvements, simplification, and technical debt reduction
  • Be the GoTo person for Business/ Desk and provide estimates for tasks including design, development, and testing
  • Provide holistic simulation and testing of the trading system for high reliability
  • Support analysis, testing, and operations teams
  • Participate in code reviews and architectural decisions
  • Mentor junior developers
  • Development and delivery of high-quality software solutions
  • Cross-functional collaboration with product managers, designers, and other engineers
  • Collaboration with peers, participate in code reviews
  • Stay informed of industry technology trends and innovations
  • Adherence to secure coding practices
  • Implementation of effective unit testing practices

Requirements

  • Excellent 5+ years of experience with expertise in C++
  • Conversant with Modern C++ topics and features
  • Expert in data structures, algorithms, multi-threading, and C++ standard library
  • C++ performance and low latency understanding to make latency reduction on the critical path of flow
  • Good working experience of Linux/Unix operating system and Linux commands
  • Working experience, collaboration in the regional and global team structure

Nice to have

  • Front office trading development on the critical path to the exchange
  • May have developed low latency system specially for APAC markets
  • Proven experience in working in the Investment banking, working with directly with Traders and Desk Heads
  • Algorithmic Trading experience with a High Frequency Trading Firm
  • User Space Networking: Solar flare open onload
  • Lower level TCPIP Experience

What we offer

  • Competitive holiday allowance
  • Life assurance
  • Private medical care
  • Pension contribution
  • Wellness rooms
  • Gyms
  • Mental health support
  • Modern workspaces
  • Collaborative areas
  • State-of-the-art meeting rooms
  • On-site cafeterias
  • Fitness centers
  • Tech-equipped workstations
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