Senior Low-Latency Engineer — Hybrid + Mentorship & Growth

Citi Group; Greater London; Hybrid; GBP 110,000 - 190,000; Full time

Benefits offered by this job

Hybrid work opportunities

Competitive base salary

Private medical care & life insurance

Employee pension plan

Parental leave

Learning and development resources

Job summary

Citi in London is seeking a Senior Low Latency Engineer to lead Java and Rust based development for high-performance trading systems. You will work in the High Performance Architectures team, delivering ultra-fast event-sourced microservices and low-latency data flows.

The role combines hands-on coding with architecture, mentoring juniors, and collaborating with senior stakeholders across Markets Technology.

Qualifications

• Experience in Java low-latency development.
• Knowledge of market data handling and time-series databases.
• Leadership and project management skills.
• Strong communication and collaboration with senior stakeholders.
• Experience delivering high availability trading systems.

Responsibilities

• Hands-on work in Java or Rust codebase with low latency focus.
• Lead integration of functions, deploy products, enhance processes.
• Analyze complex business and system processes to define solutions.
• Mentor junior developers and share expertise with the team.
• Engage with senior leaders and external parties.

Job description

Citi in London is seeking a Senior Low Latency Engineer to lead Java and Rust based development for high-performance trading systems. You will work in the High Performance Architectures team, delivering ultra-fast event-sourced microservices and low-latency data flows.

The role combines hands-on coding with architecture, mentoring juniors, and collaborating with senior stakeholders across Markets Technology.