Principal Software Engineer (UI)

  • TP ICAP Group Services Ltd
  • City, Belfast
  • 30/05/2026
Full time Information Technology Telecommunications Java SQL Python Business Analyst Testing CRM

Job Description

Group Overview

TP ICAP Group is a world leading provider of market infrastructure, connecting clients to liquidity and data solutions across global financial and commodities markets.

Role Overview

The Principal UI Engineer serves as a senior technical authority within the UI engineering discipline, providing leadership across design, architecture, standards, and delivery. The role is hands on, focused on building scalable, high performance UI systems while mentoring engineers and influencing best practices across multiple teams in an agile environment.

Responsibilities
  • Lead the design and development of scalable, high performance UI applications.
  • Provide technical leadership and mentoring to UI engineers across teams.
  • Establish and maintain UI engineering standards, patterns, and best practices.
  • Oversee solution design, analysis, and implementation for complex UI systems.
  • Communicate architectural decisions to technical and non technical stakeholders.
  • Guide teams through estimation, planning, and prioritisation using established SDLC processes.
  • Drive continuous improvement initiatives to optimise UI performance, usability, and maintainability.
  • Identify opportunities to evolve systems toward target architecture and lead refactoring initiatives.
  • Support risk identification, escalation, and mitigation within engineering teams.
  • Design, develop, and maintain software, ensuring seamless integration and performance.
  • Collaborate with cross functional teams, including Business Analysts and Project Managers, to gather and refine requirements.
  • Implement and maintain Infrastructure as Code (IaC) using AWS CDK with Python to automate deployment and management of cloud resources.
  • Ensure high quality code through automated testing, particularly unit testing, and maintain a strong emphasis on code quality and complexity.
  • Oversee the implementation and management of CI/CD pipelines to streamline the software development lifecycle.
Experience & Competences Essential Requirements
  • Proven experience as a senior or principal UI engineer within complex, high performance systems.
  • Strong expertise in React, TypeScript, JavaScript, and modern UI development practices.
  • Experience with UI component libraries such as Material UI or Ant Design.
  • Proficiency in HTML5, CSS, and responsive design principles.
  • Knowledge of performance optimisation and profiling techniques.
  • Strong understanding of AWS services and hands on experience with Infrastructure as Code using AWS CDK in Python.
  • Experience with Entity Framework (or other CRMs) is beneficial.
  • Experience designing and building systems using a contract first methodology is beneficial.
  • Experience with writing tests or scripts in Python is beneficial.
  • Familiarity with testing frameworks such as Jest and industry code quality tools.
  • Skilled in Git based source control and agile development methodologies.
  • Strong communication and collaboration skills, able to influence engineering direction.
Desired Requirements
  • Strong understanding of microservices architecture in cloud environments.
  • Strong grasp of database design and experience with relational and/or NoSQL databases.
  • Competent in using Docker for containerisation.
  • Familiarity with Kubernetes, relying on the DevOps Engineer for orchestration.
  • Proficiency in using Git for version control and JIRA for backlog management.
  • Experience with CI/CD pipelines and tools.
Role Band & Level

Manager, 7

Location

UK - City Quays - Belfast