Senior Staff Engineer with deep expertise in React and Next.js to lead the development of high-performance, scalable, and user-centric web applications - R
S.i. Systems
Toronto, ON-
Number of positions available : 1
- Salary To be discussed
-
Permanent job
- Published on September 25th, 2025
-
Starting date : 1 position to fill as soon as possible
Description
S.i. Systems client is looking for a Senior Staff Engineer with deep expertise in React and Next.js to lead the development of high-performance, scalable, and user-centric web applications. You'll be a key player in designing and building modern front-end architectures and frameworks, collaborating closely with product, design, and backend teams to bring innovative digital experiences to life.
RESPONSIBILITIES:
- Architect, develop, and maintain production-grade React/Next.js applications
- Translate complex UI/UX designs into responsive, pixel-perfect interfaces
- Optimize performance, scalability, and maintainability of the front-end codebase
- Implement SSR, ISR, and CSR strategies using Next.js depending on use cases
- Collaborate with designers, product managers, and back-end developers to deliver features end-to-end
- Lead code reviews, mentor junior developers, and enforce front-end best practices
- Build reusable components and libraries for future use
- Ensure accessibility (a11y), SEO best practices, and cross-browser compatibility
- Stay up to date with the latest trends in front-end technologies and web standards
MUST HAVES:
- 10+ years of front-end development experience, with 3+ years in React
- 2+ years of hands-on experience with Next.js, including SSR and static site generation
- Deep understanding of JavaScript, HTML5, CSS3, and modern front-end tooling as well as proficiency with TypeScript
- Knowledge of Trunk based Development, Pair Programming & TDD
Requirements
undetermined
undetermined
undetermined
undetermined
Other S.i. Systems's offers that may interest you