Software Engineer – Margin Technology

Citi; Belfast City District; Hybrid; GBP 65,000 - 95,000; Full time

Benefits offered by this job

Hybrid work

Private Medical Care

Life Insurance

Pension Plan

Paid Parental Leave

Learning resources

Employee discounts

Job summary

Citi is seeking a Software Engineer in Belfast to help redefine finance through technology. You’ll join a global team building scalable systems that process trillions of dollars daily, collaborating closely with product teams and users to deliver robust solutions.

You’ll contribute to an engineering culture that values mentorship, continuous learning, and flexible working options, including potential hybrid arrangements.

Qualifications

• Hands-on software development experience.
• Bachelor’s degree in computer science or engineering.
• Proficiency in Java, React and/or Python.
• Experience building RESTful APIs using Spring.
• TDD and clean code principles.
• Data structures, algorithms and SQL.
• Ability to work in a fast-paced, changing environment.

Responsibilities

• Develop software solutions for complex business problems.
• Collaborate with product teams and users.
• Contribute to engineering culture and best practices.

Skills

Software development

Java

React

Python

REST APIs

Spring

TDD

SQL

Fast-paced work

Education

Bachelors in CS/Engineering

Tools

AWS

Kafka

Kubernetes

MongoDB

NoSQL

Job description

• Paid Parental Leave

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.

What We Do / The Team

Markets Operations Technology is going through an exciting phase of transformation in margin and collateral domain. We are re‑engineering our technology estate to achieve world‑leading performance and resiliency, enabling new capabilities in advanced execution, global market connectivity, and modernised post‑trade, clearing and margin processes. Our ambition is to deliver a seamlessly integrated, highly automated platform that drives outstanding client outcomes and accelerates growth across our global franchise.

Role Overview/What will you do:

As a Software Engineer in our global technology team, you will be working with a group of passionate engineers who build technical solutions to complex business problems. You will have an opportunity to participate in the whole spectrum of building a software solution, closely working with product teams and users. We expect you to contribute to our vision of building a strong engineering culture within our global teams.

This role is for someone who enjoys solving engineering challenges, has experience in building robust and high‑quality solutions, has excellent communication skills and can manage multiple priorities simultaneously.

Key Skills And Experience Required -

• Hands‑on professional software development experience
• Bachelor’s degree in computer science or engineering field involving software programming or systems engineering
• Proficiency in programming in mainly Java, React and/or Python
• Strong hands‑on experience of building RESTful APIs using popular frameworks like Spring
• Experience of following TDD and clean code principles
• Proficiency with data structures, algorithms and SQL
• Able to independently work in fast paced and rapidly changing environment

Any Beneficial / Nice to have skills and experience:

• Experience of working in investment bank or financial services industry
• Experience of using cloud services such as AWS and distributed systems such as Kafka, Kubernetes, S3, DynamoDB, MongoDB or any other NoSQL database

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, 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.

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.