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Equities GUI Engineer

  • Mississauga, ON
  • Hybrid
  • Posted Sep 15, 2026
  • 1 position

$120,800–$170,800 / year

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Employment type
Full-time
Experience level
Senior · 5+ years
Minimum education
Bachelor’s degree
Apply by
Sep 19, 2026
Posting language
English
Working hours
40 hours per week

Job summary

Design, develop, and maintain web applications using React and TypeScript while ensuring high-quality, maintainable code. Collaborate with front office and product development teams to improve efficiency and reduce operational risk.

Job details

This role is for a Senior Equities GUI Engineer 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 feature apps. Contribute to the overall application architecture and provide inputs on front end frameworks, design patterns and best practices. Perform code reviews and contribute to overall quality, maintainability and testability of software developed. Be a self-starter and plan/schedule own work for tasks and projects, implement functionality without direct supervision. Work closely with teams to form good working culture and continuously adapt to different working environment. Requirements: Hands on HTML5, CSS3/SASS/CSS in JS, Core JavaScript, Typescript Hands on React, React hooks Unit Testing with Jest, React-testing-library Application State Management with Redux, Recoil, React Context Reactive Apps with RxJS, Web Sockets, Web workers Build Tools like Webpack/Vite etc Debugging skills, Code performance, Bench Marking Container based development like Electron RESTful APIs, JWT, NodeJS, Express JS Nice to have: Exposure to Bitbucket, Jenkins, Artifactory, Confluence MongoDB, AMPS Server - should be able to query Workspace tools – npm workspace, Micro Frontend, ESLint/TSLint Docker management, Openshift containers Experience working with other UI frameworks such as Angular Education: Bachelor’s degree/University degree or equivalent experience This job description provides a high-level review of the types of work performed. Other job-related duties may be assigned as required. ------------------------------------------------------ Job Family Group: Technology ------------------------------------------------------ Job Family: Applications Development ------------------------------------------------------ Time Type: Full time ------------------------------------------------------ Primary Location Full Time Salary Range: $120,800.00 - $170,800.00 ------------------------------------------------------ Most Relevant Skills Please see the requirements listed above. ------------------------------------------------------ Other Relevant Skills For complementary skills, please see above and/or contact the recruiter. ------------------------------------------------------ Automated Processing and AI We use automated processing, including artificial intelligence, for our legitimate business interests (or our reasonable and appropriate business purposes) to identify and align the candidate's skills and abilities with a specific job opening. Additionally, if you so choose, or consent, we can match your skills and abilities to other suitable roles at Citi. Importantly, all our hiring processes and decisions, including determining your suitability for a role, are conducted, checked, and decided by individuals. Our automated processing and AI do not involve relying on automatic or autonomous decision-making. Please refer to any Jurisdictional Considerations, with specific provisions for your country (where relevant) for further details. ------------------------------------------------------ This job opening is for an existing job vacancy. ------------------------------------------------------ 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.

What you’ll do

Design, develop, and maintain web applications using React and TypeScript while ensuring high-quality, maintainable code. Collaborate with front office and product development teams to improve efficiency and reduce operational risk.

Requirements

Requires 6-10 years of experience in React, Redux, and modern web technologies. Candidates must possess strong analytical skills and proficiency in TypeScript, HTML5, CSS3, and various build tools.

Listed skills

  • HTML · Preferred
  • CSS · Preferred
  • Docker · Preferred
  • React · Preferred
  • JavaScript · Preferred
  • TypeScript · Preferred

Other relevant skills

Identified from the job description. Confirm important requirements above.

  • React
  • Redux
  • TypeScript
  • JavaScript
  • HTML5
  • CSS3
  • Websockets
  • RxJS
  • NodeJS
  • Express JS
  • Webpack
  • Vite
  • Unit Testing
  • Electron
  • RESTful APIs
  • Docker
  • Atlassian Confluence
  • Self-Starter
  • Web Technologies
  • Jest (JavaScript Testing Framework)
  • npm (Node Package Manager)
  • React Hooks
  • JSON Web Token (JWT)
  • UI Components
  • Express.js (Javascript Library)
  • React Testing Library
  • SASS
  • JavaScript (Programming Language)
  • Application Programming Interface (API)
  • Artificial Intelligence
  • Angular (Web Framework)
  • Applications Architecture
  • Automation
  • Management
  • Cascading Style Sheets (CSS)
  • Decision Making
  • Code Coverage
  • Code Review
  • Communication
  • Debugging
  • Software Design Patterns
  • Middleware
  • Equities
  • Front End Design
  • Front Office
  • Graphical User Interface
  • Maintainability
  • MongoDB
  • New Product Development
  • Node.js (Javascript Library)

Job areas

  • Technology
  • Software
  • Finance & Accounting
  • Engineering
  • UI Engineer
  • User Interface / User Experience (UI / UX) Developer
  • Web and Multimedia Developers
  • Web and Digital Interface Designers

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