Equities Low Latency Java Algo Developer (Vice President) - London

Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments, and institutions with a broad range of financial products and services, including consumer banking and credit, corporate and investment banking, securities brokerage, transaction services, and wealth management. We enable clients to achieve their strategic financial objectives by providing cutting-edge ideas, best-in-class products and solutions, and unparalleled access to capital and liquidity.

Join Citi\'s Equities Smart Order Router team, a core part of our Front Office Technology, driving innovation in electronic trading. This established team builds and maintains high-performance, low-latency, high-throughput applications vital for optimizing liquidity sourcing across global markets.

You will provide end-to-end SDLC support, developing and enhancing critical trading components. This involves close collaboration with Product teams on requirements, Quants for algorithm implementation, and Production Support to ensure platform stability.

Our team thrives on solving complex challenges at the intersection of high-performance computing and intricate trading strategies. If you\'re passionate about building cutting-edge financial technology with direct market impact, this role offers an exciting opportunity within a highly collaborative and impactful environment.

• End-to-End SDLC Ownership: Drive the full Software Development Life Cycle for the Equities Smart Order Router, from design to deployment, ensuring robust and high-performance solutions.
• Global Collaboration: Work intimately with key stakeholders and colleagues across global regions, including product teams, quantitative analysts, and other engineering groups.
• Critical L3 Support: Provide essential Level 3 support, resolving complex queries from production support, product managers, and trading desks to maintain platform stability.
• Strategic Impact: Directly contribute to the continuous enhancement and stability of a latency-sensitive, high-volume trading platform, directly impacting trade execution and liquidity.
• Delivery Ownership: Take full ownership of deliverables, ensuring quality, reliability, and successful integration within a dynamic trading environment.

• Financial Markets Expertise: Demonstrated prior software development experience within financial markets, preferably with exposure to electronic trading systems or low-latency environments.
• Core Java Proficiency: Expertise in Core Java development (version 1.8 or higher), with a deep understanding of its ecosystem, best practices, and performance characteristics.
• Advanced Data Structures & Concurrency: Excellent command of data structures, concurrent programming (multi-threading), and techniques for highly optimized, low-garbage-collection (zero GC) development, crucial for high-performance applications.
• Low Latency & Performance Tuning: Proven experience in developing and optimizing low-latency applications, including advanced performance tuning techniques and profiling to achieve micro seconds level response times.
• Distributed Systems & Middleware: Hands-on experience working with various messaging middlewares (e.g., Kafka, Solace) and TCP-based communication protocols for building resilient and scalable distributed systems.
• Linux & Scripting Acumen: Strong working knowledge of the Linux operating system, including shell scripting and an understanding of system-level performance tuning and troubleshooting in a Linux environment.
• Microservices Architecture: Practical experience with microservices architecture principles and design patterns, including developing, deploying, and managing services in a distributed environment.

• Algorithmic Trading & Routing Strategies: Direct experience in the development or implementation of algorithmic trading strategies, particularly within electronic trading systems and smart order routing.
• FIX Protocol Expertise: A strong understanding and practical experience with the Financial Information eXchange (FIX) protocol, specifically its application in electronic trading workflows and order management.
• Order State Lifecycle Knowledge: In-depth knowledge of the order state lifecycle in electronic trading systems, including order creation, execution, cancellation, and various status transitions.
• KDB+/Q Database Experience: Hands-on experience with KDB+ and the Q programming language for handling and analyzing large volumes of time-series financial data.
• Containerization & Orchestration: Exposure to containerization technologies (e.g., Docker) and container orchestration platforms (e.g., OpenShift, Kubernetes) for deploying and managing microservices.

• Hybrid working model (up to 2 days working from home per week) with a business casual environment.
• Competitive base salary (annually reviewed) and additional benefits such as 27 days annual leave (plus bank holidays), discretionary annual performance bonus, private medical care & life insurance, Employee Assistance Program, pension plan, paid parental leave, and employee discounts.
• Access to learning and development resources.

Visit Citi\'s Global Benefits page to learn more.

Equality and inclusion: Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

Accessibility: 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, please review the Accessibility at Citi information and Citi\'s EEO Policy Statement.

Time Type: Full time