Senior Frontend Developer (Next.js, React, TypeScript)
S.i. Systems
Toronto, ON-
Number of positions available : 1
- Salary To be discussed
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Contract job
- Published on January 27th, 2026
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Starting date : 1 position to fill as soon as possible
Description
Our client is Canadas largest retailer, their healthcare BU is looking for a Senior Frontend Developer (Next.js, React, TypeScript)
Job Summary
We are seeking a Senior Frontend Developer with deep expertise in Next.js and TypeScript, supported by strong React experience. In this role, you will build scalable, high-performance, production-grade web applications and contribute to end-to-end feature development. You’ll work closely with product, design, and backend teams in a fast-paced, collaborative environment.
Location:
- Downtown (Bathurst & Lakeshore)
- Hybrid: 1 day per week onsite
Duration:
- 6-month contract
Responsibilities
- Lead development and maintenance of modern web applications using Next.js, React, and TypeScript
- Build performant, SEO-friendly, and scalable user interfaces leveraging Next.js features (SSR, SSG, routing, APIs)
- Collaborate with cross-functional teams on application architecture, feature design, and performance optimization
- Ensure high code quality through testing, code reviews, and best practices
- Optimize applications for performance, scalability, accessibility, and security
Must-Haves
- 5+ years of frontend development experience
- Strong hands-on experience with Next.js as a primary framework
- Advanced proficiency in React and TypeScript
- Experience consuming RESTful APIs
- Familiarity with modern CI/CD pipelines and cloud platforms (AWS, GCP, or Azure)
AI may be used in evaluating candidates.
This posting is for an existing vacancy.
Requirements
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