Lead Core Backend Developer

Citibank (Switzerland) AG; Mississauga; Hybrid; Confidential; Full time

Job summary

Citibank (Switzerland) AG in Mississauga is seeking a senior Java Server developer to advance our rates reference data application. You will work on a large-scale, modern platform with exposure to the electronic trading business.

The role emphasizes high-performance, low-latency services, real-time messaging, and distributed microservices, with collaboration across global teams and end users in fast-paced trading environments.

Qualifications

• 8+ years of hands-on Java development, with Spring or DI frameworks.
• 5+ years building scalable, real-time, low-latency microservices.
• Experience with real-time messaging middleware (Kafka, RabbitMQ, Solace, Tibco).
• Experience with multi-threaded applications.
• Strong fundamentals in data structures, design patterns, OOP, algorithms.
• Unix/Linux deployment and debugging.

Responsibilities

• Develop high-performance, low-latency Java applications and services.
• Build reusable components and services following Citi practices.
• Ensure reliability, scalability and performance of components.
• Contribute to system design decisions and architectural discussions.
• Evaluate and build POCs for strategic initiatives and industrialize them.
• Provide post-release support to business, development and support groups.
• Adhere to TDD, unit testing and CI pipelines.
• Assist in third-line support during core trading hours.

Skills

Java development

Microservices

Message middleware

Multi-threading

UNIX/Linux

OOP fundamentals

Education

Bachelor's degree

Tools

Spring Framework

Job description

We are looking for a talented and passionate individual to join our Java Server development team and continue to evolve our next- generation rates reference data application. The successful candidate will gain valuable exposure to the Electronic Trading business and an opportunity to work on a large scale, modern technology platform with a global presence. The team works closely with end users gaining direct exposure to the fast-paced world of front office trading and finance.

Responsibilities

• Understanding of good design principles and ability to adhere to complex design
• Development of common, reusable components and services utilizing Citi’s best practices
• Responsible for creating high performance, low latency applications leveraging existing Citi framework
• Ensuring strong reliability, scalability and performance of our components
• Apply an engineering mind-set to development work: understand use-cases in details, develop metrics to build good estimates of volume and compute velocity requirements, understand and discuss openly any implementation limitations or workaround
• Contribute actively to system design decisions
• Evaluate and build POCs for new strategic initiatives and work to convert to industrial level solutions
• Provide post release assistance to business, development and support groups
• Develop application as per best practice and remain compliant with prescribed best practices (TDD, maintain high unit test coverage, CI…)
• Assisting in third line support during core trading hours

Qualifications

• 8+ years of strong hands-on development experience using Java including expertise with Spring or another dependency injection framework
• 5+ years’ experience in developing and maintaining highly scalable, real-time, low latency, high-volume, scalable microservices
• Experience with real-time messaging middleware (Kafka, RabbitMQ, Solace, Tibco, …)
• Experience working with multi-threaded applications
• Strong software development fundamentals, data structures, design patterns, Object-Oriented programming, architecture, algorithms, and problem-solving skills
• Application deployment and debugging of applications on UNIX/LINUX

Nice to Have

• Understanding of capital markets and financial derivatives (rates or other)
• Experience with system performance tuning and low latency Java programming
• Hands-on experience in database technologies, including RDBMS (Oracle, …) and No SQL (MongoDB)
• Experience with In-Memory Datastore/Cache libraries (Sol cache, Redis, Apache Ignite, Gemfire, …)
• Experience with CI/CD pipelines
• Test-driven development, including Unit and End-to-End Testing

Competencies

• Strong verbal and written communication skills; ability to face off to business users
• Self-motivated individual and with determination to achieve goals
• Willingness to learn, both technically and professionally
• Strong analytical and problem solving skills
• Good team working skills and ability to work in a distributed global team environment
• Ability to work on a fast-pace environment; Flexible and able to deliver quality results in the required timeframe

Education

• Bachelor’s degree/University degree or equivalent experience

Job Family Group

Technology

Job Family

Applications Development

Time Type

Full time

Primary Location Full Time Salary Range: $120,800.00 - $170,800.00

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

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

Automated Processing and AI

We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi. Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details.

This job opening is for an existing job vacancy.

Equal Opportunity Statement

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.