Senior Low Latency Java Engineer (SVP)
Citi Careers
                            
                            London, United Kingdom
                        
                        
                            
                            On-Site/Resident
                        
                        
                            
                            
                                Posted Aug 21, 2025
                            
                        
                    On-Site/Resident
                        
                    Compensation
                                    
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                            About the role
This is a senior level position responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology Team.
Responsibilities
- 90% hands in the Java codebase. We build microservices based event sourcing systems on a low latency in-house framework.
 - Response times in the 10 microsecond to 100 microsecond range.
 - Lead integration of functions to meet goals, deploy new products, and enhance processes
 - Analyse complex business processes, system processes, and industry standards to define and develop solutions to high level problems
 - Provide world class expertise in area of Java low latency development.
 - Utilize advanced knowledge of supported main system flows and comprehensive knowledge of multiple areas to achieve technology goals
 - Consult with end users to identify system function specifications and incorporate into overall system design
 - Influence and negotiate with senior leaders and communicate with external parties
 - Happy to work with and educate and support/mentor Junior developers and less experienced senior Java developers.
 
Requirements
- Demonstrated Subject Matter Expert (SME) in area(s) of Applications Development
 - In-depth experience with Algorithmic Trading application development, preferably in low latency environment
 - Detailed comprehension and experience with Market Data handling and associated technologies (such as time-series databases e.g. KDB)
 - Demonstrated leadership, project management, and development skills
 - Passion for coding excellent, commercial grade, mission critical Java frameworks based on event sourcing microservices.
 - Complete knowledge of modern Java, the JVM, the Linux Operating system, system calls and Kernel.
 - Knowledge of TCP and other IP based network protocol technologies including hardware accelerated kernel bypass e.g. Solarflare OpenOnload
 - Performance assessment and targeted tuning.
 - Design and architectural elegance.
 - Experience in implementing projects
 - Great communicator with high EQ.
 - Ability to occasionally produce clear diagrammatic documentation and model key aspects in UML sequence diagrams.
 - Relationship and consensus building skills
 
Benefits
- 27 days annual leave (plus bank holidays)
 - A discretionary annual performance-related bonus
 - Private Medical Care & Life Insurance
 - Employee Assistance Program
 - Pension Plan
 - Paid Parental Leave
 - Special discounts for employees, family, and friends
 - Access to an array of learning and development resources
 
About the Company
Discover your future at Citi Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe.
Job Details
Salary Range
Salary not disclosed
Location
London, United Kingdom
Employment Type
On-Site/Resident
Original Posting
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