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Python Application Developer, AVP

Canada, Mississauga · Job Posted June 03, 2026
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Job Description

We are seeking a Python Application Developer to join our Technology team and take a hands-on role in designing, building, and evolving mission-critical application systems that power financial services at a global scale. In this role, you will combine deep engineering expertise with modern AI-assisted development tools to deliver high-quality software solutions, mentor junior engineers, and serve as a subject matter expert for senior stakeholders. This is an opportunity to shape how technology is built and deployed at one of the world's leading financial institutions.

Job Responsibility

  • Design and build new application systems and enhancements to existing platforms, ensuring solutions meet defined business requirements and quality standards
  • Lead all phases of the software development lifecycle — from feasibility and planning through design, construction, testing, and production deployment
  • Analyze complex technical and business problems, evaluate system processes against industry standards, and deliver well-reasoned engineering solutions
  • Develop and integrate security measures into application design, validating system functionality and integrity through post-implementation analysis
  • Collaborate with business users, clients, and cross-functional technology teams to recommend and implement advanced programming solutions that address real operational needs
  • Define and uphold engineering standards and best practices across the development lifecycle, ensuring consistent and repeatable processes
  • Coach and guide junior and mid-level engineers, sharing technical expertise to raise the quality and capability of the broader team
  • Apply sound judgement when assessing technical risk and business impact, ensuring solutions align with compliance requirements and safeguard the firm's integrity
  • Conduct tasks related to feasibility studies, time and cost estimates, IT planning, risk technology, applications development, model development, and establish and implement new or revised applications systems and programs to meet specific business needs or user areas
  • Monitor and control all phases of development process and analysis, design, construction, testing, and implementation as well as provide user and operational support on applications to business users
  • Utilize in-depth specialty knowledge of applications development to analyze complex problems/issues, provide evaluation of business process, system process, and industry standards, and make evaluative judgement
  • Recommend and develop security measures in post implementation analysis of business usage to ensure successful system design and functionality
  • Consult with users/clients and other technology groups on issues, recommend advanced programming solutions, and install and assist customer exposure systems
  • Ensure essential procedures are followed and help define operating standards and processes
  • Serve as advisor or coach to new or lower level analysts
  • Has the ability to operate with a limited level of direct supervision
  • Can exercise independence of judgement and autonomy
  • Acts as SME to senior stakeholders and /or other team members
  • 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

Requirements

  • 5+ years of experience in software application development, including systems analysis, design, and end-to-end project delivery
  • Proficiency in Python, with practical experience applying it to build and maintain software applications in a professional environment
  • Experience with Angular for building dynamic, client-facing web applications
  • Hands-on use of AI-assisted coding tools such as Devin, GitHub Copilot, or similar platforms to accelerate development and prototyping
  • Ability to rapidly prototype and iterate on solutions using AI-powered development and presentation tooling
  • Exposure to machine learning concepts or AI/ML workflows in an applied engineering context
  • Demonstrated ability to manage and deliver technology projects successfully, balancing scope, timelines, and stakeholder expectations
  • Familiarity with consulting and project management methodologies, with the ability to apply structured approaches to complex technical challenges
  • Able to work independently with a high degree of autonomy, making sound decisions with limited day-to-day supervision
  • Comfortable working under pressure, adapting quickly to shifting priorities, deadlines, or changing requirements
  • Bachelor’s degree/University degree or equivalent experience
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