Senior KDB+ Architect for Low-Latency Equities Analytics

Citigroup Inc.; Jersey City (NJ); On-site; USD 180,000 - 240,000; Full time

Job summary

Citigroup Inc. is seeking a senior software engineer to join Equities Technology, driving a multi-year transformation across execution, prime, clearing, and margining platforms.

You will collaborate with engineers, product partners, and quants to deliver a next‑gen, low‑latency analytics stack using KDB+/Q for the equities electronic trading platform. The role requires 8+ years in financial software, deep KDB+ expertise, FIX knowledge, and CI/CD experience, with excellent communication in a

Qualifications

• 8+ years hands-on software development experience in financial high-performance, low-latency systems.
• Deep expertise in KDB+ (Q language) with scaling and performance tuning.
• Experience building analytics platforms for automated trading in equities or similar assets.
• Solid understanding of FIX and handling order/market data.
• Experience with testing, Agile, and CI/CD processes.
• Ability to manage multiple tasks in a fast-paced environment.
• Excellent communication and ability to explain complex technical concepts.

Responsibilities

• Drive technical design discussions and code reviews to ensure high quality and performance.
• Mentor developers and promote best practices in high-performance KDB+ development.
• Design, develop, and optimize high-performance, low-latency analytics and data subsystems.
• Build and maintain trading analytics platforms to process market data and large datasets.
• Collaborate with product, quantitative researchers, and other tech teams to deliver new trading capabilities.
• Drive improvements in testing frameworks, deployment tools, and processes for low-latency environments.
• Assess risk and ensure compliance in decisions affecting Citigroup’s reputation and assets.

Skills

High‑performance software development

Low‑latency systems

Strong communication skills

Education

Bachelor’s degree or equivalent

Master’s degree preferred

Tools

KDB+ (Q language)

FIX protocol experience

CI/CD pipelines

Agile methodologies

Job description

Citigroup Inc. is seeking a senior software engineer to join Equities Technology, driving a multi-year transformation across execution, prime, clearing, and margining platforms.

You will collaborate with engineers, product partners, and quants to deliver a next‑gen, low‑latency analytics stack using KDB+/Q for the equities electronic trading platform. The role requires 8+ years in financial software, deep KDB+ expertise, FIX knowledge, and CI/CD experience, with excellent communication in a