Algorithmic Engineer Jobs in Lynbrook, NY (NOW HIRING)

Equities Technology at Citi is undertaking a bold, multi‑year transformation to build a best‑in‑class global platform across execution, prime, clearing and cross‑product margining. We are re‑engineering our technology estate to achieve world‑leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernised post‑trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise. As part of the team, you’ll collaborate closely with high‑calibre engineers and deeply engaged business and product partners - working together to define and deliver the next generation of Equities technology at Citi.

We are seeking a highly skilled and experienced Algorithmic Trading Developer to join our Equities Electronic Trading team. This is a VP-level position responsible for the design, development, and optimization of our core low-latency execution platform. The overall objective of this role is to drive the technical implementation and innovation of our algorithmic trading engines, critical components of our electronic trading infrastructure, utilizing modern, high-performance Java and microservices architecture.

• Take a leading role in the design, development, and optimization of high-performance, low-latency microservices and applications, with a primary focus on the firm's algorithmic trading strategies and infrastructure.
• Implement and enhance complex trading logic, execution strategies, 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.

• 5+ years of hands‑on experience in software development with a strong focus on high-performance, low-latency systems.
• 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 in Equities or other similar financial domains, such as smart order routing, benchmark algorithms, or other automated execution strategies.
• 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, KDB+), infrastructure automation tools (e.g., Ansible), or experience with other high-performance languages like Rust is a plus.
• Bachelor’s degree/University degree or equivalent experience; Master’s degree preferred.

Technology

Applications Development

Full time

Jersey City New Jersey United States

$142,320.00 - $213,480.00

In addition to salary, Citi’s offerings may also include, for eligible employees, discretionary and formulaic incentive and retention awards. Citi offers competitive employee benefits, including: medical, dental & vision coverage; 401(k); life, accident, and disability insurance; and wellness programs. Citi also offers paid time off packages, including planned time off (vacation), unplanned time off (sick leave), and paid holidays. For additional information regarding Citi employee benefits, please visit citibenefits.com. Available offerings may vary by jurisdiction, job level, and date of hire.

Please see the requirements listed above.

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

Jul 28, 2026

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.

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