Java Developer, Equities Trading, Vice President

Citibank (Switzerland) AG; Mississauga; On-site; CAD 150,000 - 210,000; Full time

Job summary

Citibank (Switzerland) AG in Mississauga is seeking a senior software engineer to design, develop, and optimize high-performance, low-latency microservices with a primary focus on the Smart Order Router. You will lead technical design discussions and perform rigorous code reviews to uphold quality and architectural integrity.

You will partner with product development, quantitative researchers, and other technology teams to deliver new trading capabilities and improve testing frameworks, CI/CD,

Qualifications

• Experience designing high-performance, low-latency systems in finance.
• Proven ability to lead design discussions and code reviews.
• Strong knowledge of Java, JVM tuning, and memory management.
• Familiarity with trading protocols (e.g., FIX) and microservices.

Responsibilities

• Design, develop, and optimize low-latency microservices and applications.
• Lead technical design discussions and conduct rigorous code reviews.
• Collaborate with product, researchers, and tech teams to deliver new trading capabilities.
• Drive improvements in testing, CI/CD, and deployment processes.

Skills

Core Java

JVM internals

Concurrency

Garbage collection

Memory management

Low-latency

Trading systems

Smart Order Router

Microservices

Distributed systems

Testing frameworks

CI/CD

Agile methodologies

Communication skills

Tools

Solace

AMPS

Chronicle

Ansible

FIX

Job description

* Take a leading role in the design, development, and optimization of high-performance, low-latency microservices and applications, with a primary focus on the Smart Order Router.* Implement and enhance complex routing logic, venue analysis models, and performance optimizations to ensure best execution and system stability.* Participate in and lead technical design discussions and conduct rigorous code reviews to ensure the highest standards of quality, performance, and architectural integrity.* Partner with product development, quantitative researchers, and other technology teams to deliver new trading capabilities and enhance existing systems.* Drive continuous improvement initiatives in testing frameworks, development tools, and deployment processes for our low-latency and high-throughput environment.* Resolve complex technical challenges through in-depth analysis of business requirements, system processes, and industry best practices.* Apply expert knowledge of system architecture, data flow, and development standards for coding, testing, debugging, and implementation.* Build and maintain robust solutions for trading platform monitoring, trade reconciliation, and application recovery.* Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.* Hands-on experience in software development with a strong focus on high-performance, low-latency systems (required)* Expert-level technical knowledge in Core Java, including a deep understanding of JVM internals, concurrency, garbage collection, and memory management in a low-latency context.* Proven experience designing and developing automated trading systems,specifically with Smart Order Routers in Equities or other similar financial domains (preferred)* Solid understanding of financial market protocols (e.g., FIX) and practical experience handling order and market datasets.* Experience with microservices architecture and developing distributed systems.* Demonstrable experience with modern testing frameworks, Agile methodologies, and Continuous Integration/Continuous Delivery (CI/CD) processes.* Excellent communication skills with a demonstrable ability to present and grasp complex technical and business concepts.* Familiarity with messaging and data grid technologies (e.g., Solace, AMPS, Chronicle) and infrastructure automation tools (e.g., Ansible) is a plus.