Full Stack Application Development Technical Lead; Java​/Python), Vice President

Team/Role Overview

Source to Pay Solutions Technology group is part of COO (Citi Operating Office) Technology organization supporting Citi Operating Office business function and its enterprise-wide transformation agenda to achieve improvements across risk management, controls, data governance, AI adoption, and process re-engineering by delivering scalable, secure, and modern technology solutions. Based in Belfast, the team partners closely with businesses and technology stakeholders to build, manage, and modernize multiple Source to Pay applications, playing a key role in translating strategic transformation priorities into measurable operational outcomes.

• Design, build, and enhance Java based backend services and Python enabled components for enterprise scale applications
• Own end-to-end delivery of features from design through production rollout
• Collaborate with global technology and business teams to deliver against regulatory and transformation priorities
• Apply agile engineering practices (iterative delivery, continuous improvement, pragmatic design decisions)
• Integrate GenAI capabilities (LLMs, APIs, workflow automation) into real-world applications where they add value
• Mentor developers through code reviews, technical guidance, and hands-on collaboration
• Ensure applications meet Citi standards for security, stability, and control

• Strong hands-on experience with Java (Spring Boot / Core); working knowledge of Python or strong willingness to ramp up quickly
• Full-stack mindset with exposure to modern frontend frameworks (React, Angular, or similar)
• Experience delivering in Agile / Scrum environments with a bias toward action and ownership
• Practical exposure to cloud-native architecture and scalable systems
• Awareness or hands-on experience integrating GenAI / LLM based capabilities into applications, with a focus on integration and usage rather than deep ML research
• Strong communication skills and ability to work independently with minimal supervision

• Opportunity to build an in-depth knowledge of financial services and business services operations across the bank
• Positive financial and social impact opportunities through benefits such as competitive base salary, hybrid working model (up to 2 days working at home per week), generous holiday allowance starting at 27 days plus bank holidays, increasing with tenure
• Discretionary annual performance related bonus
• Private medical insurance packages to suit personal circumstances
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to 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 w Citi’s EEO Policy Statement and the Know Your Rights poster.