Senior GUI developer - Equities Technology

Citigroup
📍 Mississauga, ON, Canada 💼 Full-time 🕒 Posted July 25, 2026

Job Description

This role is for a Senior GUI developer in Citi Equities Technology. As a senior developer you will work together with front office, product development and members of development team to provide solutions that improve efficiency, decrease operational risk, and enable the business to expand.

The candidate should possess strong analytical and technical ability with 6-10 years' experience in React, Redux, websockets and cutting-edge web technologies. Candidate should be able to work independently as well as being a team player, with good communication skills and stake holder management.

**Responsibilities:**

+ Design, develop and maintain web apps using React and TypeScript, ensuring high quality, clean and maintainable code.
+ Manage application state using redux and middleware such as redux toolkit.
+ Ensure high test coverage by writing unit tests using Vitest.
+ Write and maintain a suite of reusable UI components which can be used across different...

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Job Details

  • Location Mississauga, ON
  • Job Type Full-time
  • Category other-general
  • Posted Date July 25, 2026
  • Application Deadline July 30, 2026