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Senior Fullstack Developer, AI Centre of Excellence

Job in Old Toronto, Toronto, Ontario, M5A, Canada
Listing for: EY
Full Time position
Listed on 2026-02-16
Job specializations:
  • Software Development
    Full Stack Developer, Software Engineer
Job Description & How to Apply Below
Location: Old Toronto

The opportunity

As a Senior Fullstack Developer at the AI Centre of Excellence (COE) within the Office of the Chief Technology Officer at EY, you will spearhead the design, development, and deployment of robust fullstack solutions for advanced AI applications. Your role will encompass architecting scalable web interfaces and backend systems, integrating cutting-edge machine learning models, and optimizing workflows for performance and reliability.

You’ll collaborate cross-functionally with product managers, data scientists, and engineering teams to translate complex business requirements into secure, maintainable, and production-ready code. If you are passionate about leveraging modern cloud technologies, implementing best practices in software engineering, and driving technical innovation in the AI space, we encourage you to join our team.

Your key responsibilities

  • Fullstack Development:
    Lead the design, development, and deployment of fullstack applications, ensuring high performance and responsiveness across the UI and backend.
  • UI/UX Integration:
    Collaborate with UI/UX designers to implement visually appealing and user-friendly interfaces that integrate AI outputs effectively.
  • Team Leadership:
    Lead and manage a fullstack development team, both onshore and offshore, ensuring effective collaboration and communication across all team members.
  • Collaboration:

    Work closely with business stakeholders and backend teams to gather requirements, translate them into technical specifications, and deliver robust solutions.
  • Code Quality:
    Maintain high standards of code quality through best practices, code reviews, and continuous integration/continuous deployment (CI/CD) processes.
  • Technical Leadership:
    Provide technical guidance and mentorship to junior developers, fostering a culture of collaboration and innovation within the team.
  • Problem-Solving:
    Identify and troubleshoot issues across the fullstack, ensuring timely resolution and minimal disruption to development processes.
  • Continuous Improvement:
    Stay updated with the latest trends and technologies in fullstack development and UI/UX design, applying them to enhance existing applications.
  • Drive

    Innovation: Stay updated with the latest trends and technologies in fullstack development and UI/UX design, proposing and implementing innovative solutions to enhance functionality and user experience.
    Compliance and Accessibility:
    Ensure that the application adheres to accessibility standards and implement security best practices to protect sensitive client data.
  • Skills and attributes for success

  • Education:

    Bachelor’s or Master’s degree in Computer Science, Information Technology, Software Engineer, Web Development or a closely related technical field.
  • Experience:

    4-6 years of experience in fullstack development, with a strong focus on UI/UX integration and application performance.
  • Technical

    Skills:

    Advanced proficiency in frontend frameworks such as React or Angular, and strong knowledge of JavaScript/TypeScript. Familiarity with backend technologies (, Python, .NET) is a
  • plus. Strong expertise in HTML5, CSS3, and modern CSS frameworks (, Tailwind CSS, Bootstrap). Deep understanding of RESTful APIs and integrating front-end applications with backend services
  • Problem-Solving:
    Strong analytical and problem-solving skills, with the ability to tackle complex technical challenges.
  • Communication:
    Excellent written and verbal communication skills, with the ability to convey technical concepts clearly to diverse audiences..
  • What we offer

    The EY benefits package is designed to support your physical, emotional, financial, and social wellbeing. Our extensive benefits include comprehensive medical, dental, and prescription drug coverage, as well as mental health benefits, a robust Employee Assistance Program and group savings plans to promote your overall wellbeing. We offer generous time off, including personal days, vacation days, and additional firm-wide holidays, along with the option to purchase extra vacation days.

    Employees can take advantage of EY's exclusive learning programs tailored just for them. We also provide internal opportunities for career development and advancement,…

    Position Requirements
    10+ Years work experience
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