Full Stack Senior Engineer

Citigroup Inc.; Mississauga; On-site; CAD 121,000 - 171,000; Full time

Job summary

Citigroup Inc. in Mississauga, Canada, seeks a Full Stack Senior Engineer to lead application development and implement new or revised systems in coordination with the Technology team.

Responsibilities include partnering with management, solving high-impact problems, guiding design, and mentoring mid-level developers while ensuring risk and regulatory compliance across global teams. Strong expertise in React, TypeScript, JavaScript, and microservices is required.

Qualifications

• 6+ years of relevant experience in the Financial Service industry.
• Experience in designing microservices and distributed architecture enterprise applications.
• Expert proficiency in React (v18+), TypeScript, and modern JavaScript (ES2022+).
• Experience with Agile/Scrum and Sprint planning.

Responsibilities

• Partner with multiple management teams to ensure integration of functions and define system enhancements.
• Resolve high-impact problems by evaluating complex business and system processes.
• Provide expertise in applications programming and ensure design adheres to architecture blueprint.
• Develop standards for coding, testing, debugging and implementation.

Skills

React 18+

TypeScript

JavaScript ES2022

Microservices

Agile/Scrum

Jenkins

Git/Bitbucket

JUnit

Selenium

Databases

Education

Bachelor's degree or equivalent

Master’s degree preferred

Tools

Jenkins

Git/Bitbucket

Jira

SonarQube

Selenium

Job description

The Full Stack Senior Engineer is responsible for establishing and implementing new or revised application systems and programs in coordination with the Technology team. The overall objective of this role is to lead applications systems analysis and programming activities.

Responsibilities

• Partner with multiple management teams to ensure appropriate integration of functions to meet goals as well as identify and define necessary system enhancements to deploy new products and process improvements
• Resolve variety of high impact problems/projects through in-depth evaluation of complex business processes, system processes, and industry standards
• Provide expertise in area and advanced knowledge of applications programming and ensure application design adheres to the overall architecture blueprint
• Utilize advanced knowledge of system flow and develop standards for coding, testing, debugging, and implementation
• Develop comprehensive knowledge of how areas of business, such as architecture and infrastructure, integrate to accomplish business goals
• Provide in-depth analysis with interpretive thinking to define issues and develop innovative solutions
• Serve as advisor or coach to mid-level developers and analysts, allocating work as necessary
• Appropriately assess risk when business decisions are made, demonstrating particular consideration for the firm's reputation and safeguarding Citigroup, its clients and assets, by driving compliance with applicable laws, rules and regulations, adhering to Policy, applying sound ethical judgment regarding personal behavior, conduct and business practices, and escalating, managing and reporting control issues with transparency.

Qualifications

• 6+ years of relevant experience in the Financial Service industry
• Experience in designing microservices and distributed architecture enterprise applications.
• Demonstrated hands-on technology proficiency in:
• Agile/ Scrum development methods and good understanding of Sprint planning.
• Technologies: Java/ JEE, Cloud/ IaaS/ PaaS, UI/UX & SOA/ Micro Services, Spring, Microservices, Angular/React
• Deployment tools such as: Jenkins, Git/ BitBucket, Junit, RLM, JIRA, SonarQube, Selenium/Automated testing
• Relational and non-Relational databases (e.g.: Oracle, DB2, Mongo, MySQL)
• Proven track record building and scaling design systems used across multiple business units or product lines.
• Experience in regulated industries (financial services, healthcare, or government) strongly preferred.
• Background working within distributed teams across time zones, including offshore delivery partners.
• Expert proficiency in React (v18+), TypeScript, and modern JavaScript (ES2022+); familiarity with Vue or Angular a plus.
• Deep understanding of micro-frontend architectures (Module Federation, single-spa), SSR/SSG patterns (Next.js), and CSR optimization strategies.
• Experience as Applications Development Manager
• Stakeholder and people management experience
• Demonstrated leadership skills
• Proven project management skills
• Basic knowledge of industry practices and standards
• Consistently demonstrates clear and concise written and verbal communication

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.

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.

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