KDB+ Software Engineer - Vice President

Citi; Belfast City District; Hybrid; GBP 75,000 - 110,000; Full time

Benefits offered by this job

27 days annual leave

Annual bonus

Private medical care

Life insurance

Pension plan

Parental leave

Employee discounts

Learning resources

Job summary

Citi Belfast is seeking a KDB+ Software Engineer to design and deploy timeseries analytics for Equities clients. You will work with a global team to deliver high-performance, low-latency market data systems and analytics, aligning with enterprise standards and risk controls.

You will collaborate with Traders, Quants, and Global Tech to push the boundaries of tech in finance, with opportunities for hybrid work and continuous learning across the Citi Tech organization.

Qualifications

• Significant relevant experience.
• Proven experience working in KDB+/q.
• KDB+ proficiency: deep understanding of KDB+ and Q.

Responsibilities

• Drive design and development of real-time market data and analytics systems, leading KDB+/q development for trading and analytics platforms.
• Own technical delivery, and collaborate with Traders, Quants, and Global Technology teams to build high-performance, low-latency solutions.
• Develop standards for coding, testing, debugging, and implementation.
• Assess risk when business decisions are made, ensuring compliance with laws and Citi policies.
• Monitor and support all phases of the development lifecycle and provide user/operational support.

Skills

KDB+/q

Java

Python

Q language

Linux/UNIX

Low latency

Education

Bachelor’s degree

Tools

Linux

TCP/IP

FIX protocol

Job description

Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global markets, we build systems that matter. Look to join a team where your work helps influence economies, your ideas can drive innovation and outcomes, and your growth is backed by mentorship, continuous learning and flexibility with potential hybrid work opportunities. Help solve real-world challenges that touch millions and get the opportunity to build the future of finance with Citi Tech.

Citi is looking to hire a KDB+ Software Engineer into its Equities Global Data and Analytics group in Belfast , UK. This role involves designing, implementing, and deploying timeseries based software systems that offer our Equities Trading Clients with best-in-class Analytics. The engineer will be part of the Global team that captures trading, market data and computes pre-trade, at trade and post-trade analytics.

Responsibilities:

• Drive the design and development of real-time market data and analytics systems, leading KDB+/q development for trading and analytics platforms.
• Own technical delivery, and collaborate with Traders, Quants, and Global Technology teams to build high-performance, low-latency solutions.
• Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
• Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
• Appropriately assess risk when business decisions are made, demonstrating 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
• Conduct tasks related to feasibility studies, time and cost estimates, applications development, model development, and establish and implement new or revised applications systems and programs to meet specific business needs or user areas
• Monitor and control all phases of development process and analysis, design, construction, testing, and implementation as well as provide user and operational support on applications to business users
• Consult with users/clients and other technology groups on issues, recommend advanced programming solutions, and install and assist customer exposure systems
• Has the ability to operate with a limited level of direct supervision.
• 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.

Recommended Qualifications:

• Significant relevant experience
• Proven experience working in KDB+/q
• KDB+ proficiency: Deep understanding and experience with KDB+ databases and the Q programming language.
• Programming Languages: Strong skills in Q/KDB+, Java and Python/PyKX,
• Good understanding of Linux/UNIX, OS tuning
• Knowledge of TCP/IP, UDP, Multicast and exchange specific protocols (FIX, OUCH, ITCH)
• Proven track record in profiling and optimizing for latency
• Strong debugging and trouble shooting skills, especially under production load
• Experienced in working within an agile framework to ensure timely product delivery
• Understanding of Market Microstructure, Connectivity, Smart Order Routers, Algorithmic Trading Systems will be a plus.

Education:

• Bachelor’s degree/University degree or equivalent experience

This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required.

What we’ll provide you

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

Visit our Global Benefits page to learn more.

Alongside these benefits Citi is committed to ensuring our workplace is where everyone feels comfortable coming to work as their whole self, every day. We want the best talent around the world to be energized to join us, motivated to stay and empowered to thrive.

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

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