Job Description

Job Summary:

We are looking for an experienced Senior Frontend React Developer to join our growing team in Toronto. This role plays a critical part in building a robust, scalable, and personalized frontend for cutting-edge e-commerce applications using React.js and Next.js. The successful candidate will take ownership of both the design system development and micro-frontend architecture , contributing to a modular, maintainable, and high-performing user experience.

You will work closely with product designers, architects, and backend teams to develop a modern digital experience integrated with personalization platforms and headless CMS tools like Uniform , ContentStack , and CommerceTools .

Key Responsibilities:

• Build and maintain scalable and high-performance frontend applications using React , Next.js , JavaScript , and TypeScript .
• Develop a comprehensive design system , including reusable UI components, style guides, and clear documentation.
• Implement micro-frontend architecture for key e-commerce modules such as product display, checkout, and account management.
• Integrate with CMS platforms and personalization engines to deliver tailored user experiences.
• Optimize application performance, accessibility, and responsiveness across various devices and browsers.
• Set up and manage CI/CD pipelines using GitLab, GitHub Actions, or Jenkins.
• Deploy applications efficiently to AWS services , including Lambda and Amplify.
• Write and maintain unit , integration , and contract tests using Jest, React Testing Library, and Pact.
• Collaborate with cross-functional teams including UI/UX, QA, architecture, and product.
• Mentor junior developers and conduct thorough code reviews .
• Continuously improve the codebase by adhering to best practices and staying current with frontend trends.

Requirements

• 5+ years of frontend development experience with strong expertise in React.js .
• Proficient in JavaScript , TypeScript , HTML , and CSS .
• Solid experience with Next.js for SSR and SSG.
• Knowledge of micro-frontend architectures and modular frontend design .
• Hands-on experience with design systems and building reusable UI components .
• Experience working with CI/CD pipelines and tools such as GitLab CI/CD, Jenkins, or GitHub Actions.
• Skilled in writing and maintaining tests with Jest , React Testing Library , and pact.io .
• Experience deploying to AWS Lambda , Amplify , and other serverless environments.
• Familiarity with monitoring and logging tools like NewRelic , Datadog , and ELK .
• Experience with headless CMS platforms (e.g., ContentStack ) and digital experience platforms (e.g., Uniform ).
• Integration experience with e-commerce platforms like CommerceTools .
• Strong understanding of state management , React hooks , and component lifecycles .
• Familiarity with GraphQL and RESTful APIs .
• Knowledge of accessibility (a11y) standards and best practices.
• Comfortable working in Agile/Scrum environments .
• AWS Certified Developer – Associate certification is a plus.

Working Conditions:

• Type of job: Temporary Contractor – 1 year with the possibility to extend
• Work hours: Monday - Friday, 40 hours per week
• Location: Toronto, ON

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