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Citi Logo Citi · IT - Software Development

Svp Lead Engineer - Fixed Income, Low Latency Engineer

United Kingdom, London · Job Posted May 29, 2026
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Job Responsibility

  • Lead the architectural design and development of high-performance, low-latency order management and execution systems, matching engines, and market data distribution systems for Fixed Income products
  • Engage in active, hands-on coding in Java, C++ or Rust, contributing to the core codebase and setting the standard for quality, performance, and reliability
  • Define and drive the long-term technology vision for the order management platform, ensuring it is scalable, resilient, and aligned with business goals
  • Design, implement, and optimize trading workflows for ultra-low latency, ensuring minimal processing time from order receipt to execution
  • Develop and maintain FIX protocol connectivity with various internal and external trading venues, ensuring robust and compliant communication
  • Partner closely with front-office traders, quantitative analysts, and product managers to understand business requirements and translate them into robust technical solutions
  • Mentor and coach junior and mid-level engineers, fostering a culture of technical excellence, innovation, and continuous learning
  • Act as a senior escalation point for resolving complex production issues, ensuring the stability and integrity of the trading platform

Requirements

  • Expert-level proficiency in C++ or Rust, with a strong emphasis on performance-critical, low-latency programming
  • Proven experience in the design, development, and maintenance of cross-asset order management systems (OMS)
  • Demonstrable expertise in building and optimizing low-latency matching engines
  • Solid hands-on experience in integrating with and managing vendor market data feed handlers (e.g., Redline, Exegy)
  • Strong knowledge and practical experience in designing and implementing robust market data distribution systems for ultra-low-latency environments
  • Deep, practical knowledge of the FIX protocol, including session management, order flow, and execution reporting
  • Strong knowledge of high-performance messaging middleware (e.g., Kafka, Solace) and low-latency data handling techniques
  • Proven experience designing and building complex, distributed, and fault-tolerant systems
  • Experience with modern development tools, including Git, Jenkins, and containerization technologies (e.g., Docker, OpenShift)
  • Demonstrable experience leading software projects, mentoring engineers, and making key architectural decisions
  • Exceptional analytical and problem-solving skills, with the ability to tackle complex challenges under pressure
  • Excellent communication and interpersonal skills, with the ability to articulate complex technical concepts to both technical and non-technical audiences
  • Extensive professional software development experience, with a significant portion in a front-office role focused on low-latency electronic trading or order management systems
  • Deep understanding of Fixed Income products, electronic trading concepts, market data, and the trade lifecycle is essential
  • Bachelor’s or Master’s degree in Computer Science, Engineering, Mathematics, or a related field
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