Senior Java Developer - Low-Latency Equities Trading

Citi; New York (NY); On-site; USD 128,000 - 213,000; Full time

Job summary

Citi is seeking a highly skilled Java Developer to join the Equities Electronic Trading team. This VP-level role designs and optimizes our core low-latency execution platform using modern Java and microservices architectures.

You will work with product partners and engineers to deliver new trading capabilities and enhance existing systems, while driving reliability and performance in a global platform.

Qualifications

• 5+ years of hands-on software development in high-performance, low-latency systems.
• Deep knowledge of Core Java, JVM internals, concurrency, and memory management.
• Experience designing automated trading or electronic execution platforms.
• Familiarity with financial market protocols (FIX) and market data handling.
• Experience with microservices architecture and distributed systems.
• Exposure to modern testing frameworks, Agile, and CI/CD processes.
• Strong communication skills to articulate technical concepts.

Responsibilities

• Lead design, development, and optimization of high-performance microservices for the trading platform.
• Enhance trading logic, performance, and system stability in low-latency environments.
• Drive design discussions, code reviews, and architectural integrity.
• Collaborate with product, researchers, and other tech teams to deliver capabilities.
• Improve testing frameworks, deployment processes, and automation.

Skills

Core Java

Low-latency systems

Concurrency

Trading systems

Microservices

CI/CD

Agile

Communication

Messaging/Grid tech

Ansible

Distributed systems

FIX protocol

Education

Bachelor’s degree

Master’s degree preferred

Tools

Solace

AMPS

Chronicle

Ansible

Job description

Citi is seeking a highly skilled Java Developer to join the Equities Electronic Trading team. This VP-level role designs and optimizes our core low-latency execution platform using modern Java and microservices architectures.

You will work with product partners and engineers to deliver new trading capabilities and enhance existing systems, while driving reliability and performance in a global platform.