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Senior UI Developer

Job in Mississauga, Ontario, Canada
Listing for: Citi
Full Time position
Listed on 2026-02-23
Job specializations:
  • Software Development
    Software Engineer, Front End Developer, Full Stack Developer, Angular Developer
Job Description & How to Apply Below
We are looking for accomplished senior UI engineers who are passionate about building high quality, modern, front-end solutions that solve complex business problems via innovation and the application of engineering best practices.
As a  Senior UI Engineer Lead  in UI/Frontend engineering team will play a pivotal role in shaping the user interface strategy and execution. This role will be responsible for  hands‑on development of front‑end code , working as part of an agile scrum team, and  partnering with UX and other engineering specialists  to build digital products of the highest standard. You will leverage your deep technical expertise in Angular to deliver scalable, maintainable, and high‑quality front‑end solutions.

This role requires a strong balance of leadership skills and hands‑on development to mentor the team, set coding standards, and ensure best practices are followed.
Responsibilities    Lead and mentor a team of UI/Frontend developers , fostering a culture of collaboration and excellence and significantly contribute to the development of world‑class enterprise applications leveraging the latest technologies and software design patterns.
Define the UI/UX strategy, architecture,  and best practices in alignment with the company’s vision.
Collaborate with cross‑functional teams including Product, Design, and Backend teams to deliver end‑to‑end solutions.
Develop and engineer front end solutions within an Agile software delivery team, working to collaboratively deliver sprint goals, write code, and participate in the broader Citi technical community and team‑level Agile and Scrum processes.
Architect, design, and implement scalable and high‑performance Angular applications.
Drive code reviews, debugging, testing, and performance optimization for all UI layers.
Stay updated with the latest Angular versions and trends, implementing best practices and new features as needed.
Partner continuously with stakeholders, UX and QA
Provide thought leadership, as well as coaching and development for junior team members
Collaborate with technical leadership to ensure work is aligned to the broad technical strategy

Required Qualifications    8+ years of hands‑on professional experience in front‑end/UI development using Angular (preferably Angular 8+)
Proven track record in a leadership role (VP, or similar) in a UI/Frontend development capacity.
Experience in  Micro Frontend (MFE)  architecture building scalable and modular web applications.
Strong expertise in  JavaScript/Type Script, HTML5, CSS3, SCSS, and Responsive Design.

Experience with  RESTful APIs, Graph

QL,  and integrating front‑end components with backend services.
Proficiency in  UI/UX best practices  and building highly interactive web applications.
Strong understanding of frontend build tools (Webpack, Angular CLI, npm, yarn, gulp etc.) and version control systems like Git.
Multiple years of experience with software engineering best practices (unit testing, automation, design patterns, peer review, etc.)
Clear understanding of building horizontally scalable, highly available, highly resilient, and low latency applications

Preferred Qualifications   Exposure to  Cloud infrastructure  both on‑premises and public cloud (i.e.,  Open Shift, AWS , etc.)
Exposure to  Cloud‑native  development and  Container Orchestration  tools  (Serverless, Docker, Kubernetes, Open Shift,  etc.)
Multiple years of experience  CI/CD pipelines  and using front‑end test strategies and frameworks (Cypress, jasmine, karma, selenium etc.)
Exposure to event‑driven design and architecture (Kafka, Spark Flink, etc.)
Exposure to Continuous Integration and Continuous Delivery (CI/CD) pipelines, either on‑premise or public cloud (i.e., Tekton, Harness, Circle

CI, Cloudbees Jenkins, etc.)
Exposure to Infrastructure as Code tools (Terraform, Cloud formation, etc.)
Exposure to Security, Observability, and Monitoring tools (Grafana Prometheus, Splunk, ELK, Cloud Watch, etc.)
Exposure to database concepts (RDBMS, No

SQL)
Education   Bachelor’s degree/University degree or equivalent experience
Master’s degree preferred
This job description provides a high‑level review of the types of work performed. Other job‑related duties may be assigned as required.
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 w Citi’s EEO Policy Statement and the Know Your Rights poster.

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Position Requirements
10+ Years work experience
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