KDB+ Software Engineer - Vice President

Citigroup Inc.; Belfast City District; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

27 days annual leave

Discretional annual performance bonus

Private Medical Care & Life Insurance

Employee Assistance Program

Pension Plan

Parental Leave

Special discounts for employees

Learning & development resources

Job summary

Citi Belfast is hiring a KDB+ Software Engineer to design and deploy timeseries-based analytics for Equities Trading Clients. You will join a Global team delivering real-time market data systems, with a focus on low-latency performance and scalable analytics.

Strong KDB+/Q, Java and Python skills are required, along with Linux/UNIX expertise. The role offers hybrid work up to 2 days remote per week, a competitive base salary, and comprehensive benefits.

Qualifications

• Significant experience with KDB+/Q in finance
• Strong programming in Java and Python/PyKX
• Solid Linux/UNIX tuning and performance skills
• Experience building real-time market data/analytics systems
• Understanding of market microstructure and trading protocols

Responsibilities

• Drive design and development of real-time market data and analytics systems; lead KDB+/Q development for trading platforms
• Own technical delivery; collaborate with Traders, Quants, and Global Technology teams for high-performance, low-latency solutions
• Develop standards for coding, testing, debugging and implementation
• Understand business areas and how architecture/infrastructure integrate to meet goals
• Assess risk and ensure compliance; escalate and report control issues with transparency
• Conduct feasibility studies, time/cost estimates, and develop new/updated applications to meet needs
• Monitor and control all phases of the development process and provide user support

Skills

KDB+/Q

Java

Python/PyKX

Linux/Unix

Low-latency

Trading systems

Education

Bachelor’s degree or equivalent

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

By joining Citi Belfast, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 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 ourGlobal Benefitspage 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.

Job Family Group:

Technology

Job Family:

Applications Development

Time Type:

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

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

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