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

Citigroup Inc.; Belfast City District; Hybrid; GBP 60,000 - 90,000; Full time

Benefits offered by this job

Generous holiday allowance starting at

Discretional annual performance bonus

Private medical insurance

Employee Assistance Program

Pension Plan

Paid Parental Leave

Special discounts

Learning and development resources

Job summary

Citi Belfast is looking for an experienced Application Development Technology Lead to own end-to-end delivery of Java and Python‑based enterprise features within the Source to Pay Solutions Technology group. You will collaborate with global technology and business teams to deliver against regulatory and transformation priorities.

You will apply Agile practices, embrace cloud‑native architectures, and explore GenAI capabilities to deliver secure and scalable applications while mentoring

Qualifications

• Strong hands-on experience with Java (Spring Boot) and Python or willingness to ramp up quickly.
• Front-end exposure with modern frameworks (React, Angular, or similar).
• Experience in Agile/Scrum environments with a bias toward action and ownership.
• Practical exposure to cloud-native architectures and scalable systems.
• Awareness or experience with GenAI/LLM integrations into applications.
• Excellent communication and ability to work independently.

Responsibilities

• Design, build, and enhance Java-based backend services and Python components for enterprise-scale applications.
• Own end-to-end delivery of features from design to production rollout.
• Collaborate with global technology and business teams to meet regulatory and transformation priorities.
• Apply agile engineering practices and continuous improvement.
• Integrate GenAI capabilities into real-world applications where valuable.
• Mentor developers through code reviews and technical guidance.
• Ensure applications meet Citi standards for security, stability, and control.

Skills

Java

Spring Boot

Python

React/Angular

Agile/Scrum

Cloud-native

GenAI integration

Communication

Job description

Are you looking for a career move that will put you at the heart of a global financial institution? Then bring your skills in analysis, application development, problem solving and communication to the Source to Pay Solutions Technology group.

By Joining Citi, you will become part of a global organisation whose mission is to serve as a trusted partner to our clients by responsibly providing financial services that enable growth.

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.

What you’ll do

Application Development Technology Lead is a senior level position responsible for

• 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

What we’ll need from you

• 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

What we can offer you

This is a role that'll offer you the opportunity to build an in‑depth knowledge of financial services and business services operations across the bank. Every day there will be new business challenges that will help you develop new skills that can drive your career.

We work hard to have a positive financial and social impact on the communities we serve. In turn, we put our employees first and provide the best‑in‑class benefits they need to be well, live well and save well.

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:

• Generous holiday allowance starting at 27 days plus bank holidays; increasing with tenure
• A discretional annual performance related bonus
• Private medical insurance packages to suit your personal circumstances
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends
• Access to an array of learning and development resources

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.

Sounds like Citi has everything you need? Then apply to discover the true extent of your capabilities.

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.

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.