KDB+ Tech Lead

Citigroup Inc.; Belfast; Hybrid; GBP 70,000 - 90,000; Full time

Job summary

A leading global financial services firm in Belfast is seeking an experienced Team Lead to guide the CloudKDB team responsible for supporting cross-asset eTrading. The ideal candidate will possess extensive experience with KDB+ and a passion for technology, demonstrating strong leadership and mentoring abilities. This role offers a competitive salary, a hybrid work environment, and various benefits including private medical care, pension plans, and generous annual leave.

Benefits

27 days annual leave

Discretional annual performance-related bonus

Private Medical Care & Life Insurance

Employee Assistance Program

Pension Plan

Paid Parental Leave

Special discounts for employees

Qualifications

• Proven ability to lead and mentor a team of developers.
• Strong understanding of computing fundamentals.
• Desire to create systems that deliver exceptional value to users.

Responsibilities

• Lead the development of Kdb+ target state architecture.
• Document business requirements and oversee development.
• Foster a collaborative and supportive team environment.

Skills

KDB+

Agile/Scrum methodologies

Java

Python/PyKX

Linux/UNIX

TCP/IP protocols

Debugging skills

Education

Bachelor’s degree or equivalent experience

Job description

Discover your future at Citi

Working at Citi is far more than just a job. A career with us means joining a team of more than 230,000 dedicated people from around the globe. At Citi, you’ll have the opportunity to grow your career, give back to your community and make a real impact.

Job Overview

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.

Team Overview: The CloudKDB team is revolutionizing the architecture of our existing market and trade capture system to enable it to scale and ingest an ever-increasing volume of data sets. The team's vision extends beyond data capture, encompassing the development of innovative applications and advanced analytics directly on top of this data.

Role: This Team Lead role will be instrumental in guiding one of the CloudKDB teams in supporting cross-asset eTrading. Initially, the focus will be on supporting and optimizing the existing system, followed by driving the development of new functionalities to enhance its long-term stability and reliability. As a Team Lead, you will also be responsible for guiding and mentoring team members, fostering a collaborative and high-performing environment.

Responsibilities:

Technical Leadership:

• Lead the development of the Kdb+ target state architecture in collaboration with senior developers.
• Provide technical guidance and mentorship to team members, fostering their growth and development.
• Ensure adherence to coding standards and best practices, maintaining code quality and consistency.
• Drive innovation by exploring new technologies and approaches to solve complex challenges.

Project Management:

• Document business requirements, propose innovative solutions, and oversee their development.
• Conduct thorough testing to ensure solutions meet defined requirements and performance benchmarks.
• Manage project timelines, track progress, and ensure timely delivery of high-quality results.

Team Collaboration:

• Foster a collaborative and supportive team environment, encouraging knowledge sharing and open communication.
• Facilitate effective communication between the team and stakeholders, ensuring alignment on goals and progress.
• Proactively identify and address team challenges, fostering a culture of continuous improvement.

System Optimization:

• Continually improve the software development lifecycle and the overall quality of the product.
• Provide support to users in accessing and querying data, ensuring a seamless user experience.

Qualifications:

• Proven ability to lead and mentor a team of developers, fostering a collaborative and high-performing environment.
• Strong understanding of computing fundamentals: concurrency, algorithms, and data structures.
• Demonstrated ability to take ownership of tasks and proactively seek assistance when needed.
• Strong interest in technology and a passion for learning about distributed systems and databases.
• Desire to create systems/programs that deliver exceptional value to users.

Skills:

• Extensive experience working with KDB+ at an enterprise level.
• Proficient in Agile/Scrum methodologies and the software development lifecycle (SDLC).
• 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.

Education:

• Bachelor’s degree/University degree or equivalent experience in a similar role.

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.

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.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.