At a Glance
- Tasks: Lead the development of innovative Java and Python applications for a global financial institution.
- Company: Join Citi, a trusted partner in financial services with a focus on growth and innovation.
- Benefits: Enjoy competitive salary, generous holidays, private medical insurance, and hybrid working options.
- Other info: Be part of a diverse team committed to employee well-being and professional growth.
- Why this job: Make a real impact in financial technology while developing your skills in a dynamic environment.
- Qualifications: Strong Java experience, knowledge of Python, and a full-stack mindset are essential.
The predicted salary is between 80000 - 100000 £ per year.
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
The Source to Pay Solutions Technology group is part of the COO (Citi Operating Office) Technology organization supporting the 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
- 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.
Full Stack Application Development Technical Lead (Java/Python), Vice President employer: Citigroup, Inc.
Citi London is an exceptional employer, offering a dynamic and inclusive work environment that fosters innovation and collaboration. With a competitive salary, generous annual leave, and a hybrid working model, employees enjoy a healthy work-life balance while having access to extensive learning and development resources. As a key player in the Equity Derivatives Technology team, you will have the opportunity to lead impactful projects and grow your career within a globally recognised financial institution.
