Senior Java Developer - Fixed Income Algo Technology, VP

Citibank (Switzerland) AG; Greater London; Hybrid; Confidential; Full time

Benefits offered by this job

27 days annual leave

Discretionary bonus

Private medical care

Life insurance

Employee assistance program

Pension plan

Parental leave

Employee discounts

Learning resources

Job summary

Citibank (Switzerland) AG in London/Global Tech is seeking a senior Java engineer to design and deliver high‑performance trading platform components. You will collaborate with Traders, Quants and PMs to translate business needs into scalable solutions for live markets.

The role requires deep Java expertise, knowledge of low‑latency distributed systems, and experience with messaging and data processing tools.

Qualifications

• Significant hands-on coding experience in core Java, specializing in low-latency, high-throughput distributed applications.
• Proficiency in software fundamentals, data structures, design patterns, OO programming, and algorithms complexity analysis.
• Experience with messaging technologies such as Solace, Kafka, etc.
• Practical experience with Chronicle and/or Aeron.
• Experience with distributed caching techniques.
• Proven track record in market data processing and trading applications.
• Experience building back-testing frameworks and handling historical data.
• Basic Linux performance tuning and troubleshooting in the Java/Linux stack.
• Familiarity with Gradle, Git, TeamCity, Jenkins, and Artifactory.
• Strong academic record in Computer Science/Engineering or related disciplines.

Responsibilities

• Design and develop reusable algo trading platform components with a focus on performance and low latency.
• Collaborate directly with Traders, Quants, and Product Managers to implement enhancements.
• Ensure reliability, scalability, and performance of core algorithmic components.
• Work with eTrading Teams and Production Support to maintain live trading systems.
• Adhere to high engineering standards and best practices.

Skills

Java

Low-latency

Distributed systems

Algorithms

Linux performance tuning

Build tools

Education

Bachelor’s degree in Computer Science or related field

Tools

Solace

Kafka

Chronicle

Aeron

Gradle

Git

TeamCity

Jenkins

Artifactory

Job description

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Job Responsibilities / Role:

• Design and develop reusable algo trading platform components, with a strong focus on high performance and low latency.
• Collaborate directly with Traders, Quants, and Product Managers to understand business requirements and implement functional enhancements to the algo trading platform.
• Ensure the strong reliability, scalability, and performance of core algorithmic components.
• Work seamlessly with wider eTrading Teams and Production Support to maintain and enhance live trading systems.
• Adhere to stringent engineering standards, continuously striving for best-in-class solutions and practices.

Qualifications:

• Significant extensive hands‑on coding experience in core Java, specializing in low‑latency, high‑throughput distributed applications.
• Profound understanding of software development fundamentals, data structures, design patterns, object‑oriented programming, and algorithms complexity analysis.
• Demonstrated experience with messaging technologies such as Solace, Kafka, etc.
• Practical experience with Chronicle and/or Aeron.
• Experience with distributed caching techniques.
• Proven track record in implementing and supporting market data processing applications and trading applications.
• Experience building robust back‑testing frameworks and managing historical data.
• Basic proficiency in Linux system performance tuning and monitoring, with the ability to troubleshoot performance issues within the Java/Linux stack.
• Familiarity with build tools, including Gradle, Git, TeamCity, Jenkins, and Artifactory.
• Strong academic record, ideally with a Bachelor’s degree in Computer Science, Information Science, Engineering, or a related technical or quantitative discipline.

Competencies:

• Strong verbal and written communication skills, with the ability to effectively communicate complex technical concepts to business users.
• A self‑motivated individual with a strong determination to achieve goals and drive projects to successful completion.
• Eagerness to continuously learn and grow, both technically and professionally.
• Excellent team‑working skills and the ability to thrive in a distributed global team environment.
• Ability to perform effectively and deliver results in a fast‑paced environment.
• Flexible and adaptable, capable of delivering high‑quality results within required timeframes.

What we’ll provide you

• 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

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

Job Family Group: Technology

Job Family: Applications Development

Time Type: Full time

Other relevant skills: For complementary skills, please see above and/or contact the recruiter.

The fixed income business has set out an ambitious growth plan, and strong technical development is critical to achieving our goals and enhancing our leading position.

Other job-related duties may be assigned as required.

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law. If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi. View Citi’s EEO Policy Statement and the Know Your Rights poster.