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Citi Logo Citi · IT - Software Development

Senior Software Engineer - Margin Technology

United Kingdom, Belfast · Job Posted April 27, 2026
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Job Description

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.

Job Responsibility

  • Working with a group of passionate engineers who build technical solutions to complex business problems
  • Participating in the whole spectrum of building software solutions, closely working with product teams and users
  • Contributing to our vision of building a strong engineering culture within our global teams

Requirements

  • Bachelor’s degree in computer science or engineering field involving software programming or systems engineering
  • Hands-on professional software development experience
  • 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

Nice to have

  • 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

What we offer

  • 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
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