The ideal candidate is passionate about building efficient, intuitive, and high-quality user interfaces for enterprise-scale SaaS platforms and takes pride in

delivering reliable, maintainable software.

You will work in a quick-paced, collaborative environment using Agile/Scrum methodologies to design, develop, and deliver solutions that support evolving

business and customer needs.

Location: Downtown Toronto / Brampton - 2 to 3 days per week to start for team ramp up;1-2 days per week after that

Start Date: ASAP

End Date: to December 2026, will be renewed until December 2027, or longer

What You'll Do

- Design and build responsive, accessible, and user-friendly web interfaces using modern HTML5 and CSS3
- Develop robust Node.js/NestJS backend services that integrate with Google Cloud and external APIs
- Design, develop, and maintain scalable RESTful APIs and backend integrations
- Write and maintain unit and automated tests to ensure software quality, reliability, and maintainability
- Collaborate within an Agile/Scrum team to deliver solutions that meet evolving business requirements
- Contribute to software architecture, technical design, and UI/UX discussions
- Participate in code reviews and promote engineering best practices
- Troubleshoot, optimize, and continuously improve application performance and reliability
- Stay current with emerging technologies, industry trends, and modern web development practices
- Support a collaborative team culture that encourages learning, knowledge sharing, and continuous improvement

Must Haves

- 3+ years developing applications with React




- 3+ years developing applications with Node.js
- Strong understanding of RESTful APIs and API architecture

Nice to Have

- Experience with JIRA and Confluence
- Experience with Terraform
- Experience with Google Cloud Platform (GCP)

Our consumer business client is seeking a Senior Fullstack Engineer (10+ years) to develop enterprise-scale SaaS platforms using JavaScript/TypeScript, React, and Node.js

This is a fantastic opportunity for an experienced Senior Fullstack Developer (JavaScript/TypeScript) to join a growing software development team.

The ideal candidate is passionate about building efficient, intuitive, and high-quality user interfaces for enterprise-scale SaaS platforms and takes pride in

delivering reliable, maintainable software.

You will work in a fast-paced, collaborative environment using Agile/Scrum methodologies to design, develop, and deliver solutions that support evolving

business and customer needs.

Location: Downtown Toronto / Brampton - 2 to 3 days per week to start for team ramp up;1-2 days per week after that

Start Date: ASAP

End Date: to December 2026, will be renewed until December 2027, or longer

What You'll Do

- Develop and maintain modern JavaScript/TypeScript single-page applications (SPAs)



using React
- Design and build responsive, accessible, and user-friendly web interfaces using modern HTML5 and CSS3
- Develop robust Node.js/NestJS backend services that integrate with Google Cloud and external APIs
- Design, develop, and maintain scalable RESTful APIs and backend integrations
- Write and maintain unit and automated tests to ensure software quality, reliability, and maintainability
- Collaborate within an Agile/Scrum team to deliver solutions that meet evolving business requirements
- Contribute to software architecture, technical design, and UI/UX discussions
- Participate in code reviews and promote engineering best practices
- Troubleshoot, optimize, and continuously improve application performance and reliability
- Stay current with emerging technologies, industry trends, and modern web development practices
- Support a collaborative team culture that encourages learning, knowledge sharing, and continuous improvement

Must Haves

- 5+ years of professional development with JavaScript/TypeScript and core JavaScript concepts
- 3+ years developing applications with React
- 3+ years developing applications with Node.js
- Strong understanding of RESTful APIs and API architecture

Nice to Have

- Experience developing high-traffic or enterprise-scale web applications
- Experience with JIRA and Confluence
- Experience with Terraform
- Experience with Google Cloud Platform (GCP)

Disclaimer:
AI may be used in evaluating candidates.
This posting is for an existing vacancy.

📌 Full Stack Javascript Developer (Toronto)
🏢 S.I. Systems
📍 Toronto