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Citi Logo Citi · IT - Software Development

Senior React/.NET/SQL Server Full Stack Developer - Vice President

Canada, Mississauga Employment contract 120800.00 - 170800.00 USD / Year · Job Posted June 09, 2026
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Job Description

We’re looking for a talented Full-Stack Software Developer to join our growing team. You’ll work on designing, developing, and maintaining web applications using .NET/C#, React, and SQL Server, while also contributing to emerging Generative AI initiatives using Python. This role requires a solid understanding of both front-end and back-end development, a passion for writing clean and efficient code, and the ability to collaborate with cross-functional teams to deliver high-quality solutions.

Job Responsibility

  • Provide critical technical and business support for Citi Applications, delivering swift resolutions to issues, ensuring system stability, and driving efficiency to contribute directly to business success
  • Serve as a key liaison between business and internal technology teams, fostering collaboration and acting as a mentor and advisor to junior analysts
  • Lead and participate in the full application release lifecycle, from development and testing through deployment and post-release validation, ensuring seamless transitions and maintaining comprehensive technical documentation
  • Maintain application systems that have completed the development stage and are running in the daily operations of the firm
  • Manage, maintain and support applications and their operating environments, focusing on stability, quality and functionality against service level expectations
  • Assist in appropriately assessing risks when business decisions are made, demonstrating 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

Requirements

  • 6+ years of professional experience in full-stack development
  • Proficiency in .NET Core or .NET Framework and C# for server-side development
  • Solid knowledge of SQL Server, including database design, queries, code development, and optimization
  • Hands-on experience with Python (e.g., scripting, data manipulation, or API handling)
  • Familiarity with RESTful API and KAFKA development and integration
  • Competence in HTML5, CSS3, and JavaScript/TypeScript for front-end work
  • Experience with version control systems (e.g., Git)
  • Strong problem-solving skills and ability to work both independently and collaboratively
  • Good communication skills and eagerness to learn new technologies
  • Strong experience with React (2+ years preferred) for front-end development
  • Bachelor’s/University degree or equivalent experience

Nice to have

  • Exposure to Generative AI concepts or tools (e.g., LLMs, NLP)
  • Experience with containerization with Kubernetes or OpenShift ECS
  • Familiarity with unit testing frameworks (e.g., xUnit, NUnit, Jasmine, or pytest)
  • Understanding of Agile/Scrum methodologies or CI/CD practices

What we offer

  • Tremendous opportunities to advance
  • Robust training program
  • Internal mobility opportunities
  • Opportunity to give back to community
  • Global benefits program
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