Full-Stack Engineer III

Fulfillment IQ • Toronto, ON

1d • CA$105,000 - CA$125,000 • Hybrid

About The Position

As a Full-Stack Engineer III, you will help build a new greenfield platform that turns FIQ's supply chain expertise into software our clients and teams rely on every day. You will own features end to end, building the React (Next.js) interfaces users work in along with the Python APIs and data flows behind them. Working alongside the founding engineer, product, and design, you will ship the screens, services, and workflows that move the platform from foundation to full capability.

Requirements

• 4-6 years of experience building modern web applications, with a strong frontend focus
• Strong hands-on experience with React and modern JavaScript
• Working backend experience in any modern stack, such as .NET, Python, or Node.js
• Experience designing and consuming REST APIs
• Working knowledge of relational databases and SQL (PostgreSQL or similar)
• Working knowledge of TypeScript
• Ability to translate product requirements and designs into production-ready features
• Strong engineering fundamentals across code quality, testing, and maintainability
• Comfort operating in a fast-moving, early-stage environment with high ownership

Nice To Haves

• Experience with AI-driven development and AI-assisted engineering workflows
• Experience with LLM-integrated development, including RAG and retrieval-augmented patterns
• Experience with FastAPI and SQLAlchemy
• Experience building data-heavy interfaces such as dashboards, tables, or visualizations
• Familiarity with CI/CD pipelines and cloud deployment
• Experience contributing to greenfield or early-stage products
• Exposure to logistics, supply chain, or data-intensive SaaS platforms

Responsibilities

• Build user-facing features end to end across the React frontend and the API layer
• Translate product requirements and designs into working, production-ready functionality
• Design, implement, and integrate REST API endpoints with the UI
• Build reusable, well-structured React components and views
• Ensure application performance, responsiveness, and reliability
• Write tests and contribute to shared engineering standards
• Collaborate closely with backend engineers, product, and design
• Participate in code review and technical discussion
• Help shape frontend architecture and patterns as the platform grows

Benefits

• Comprehensive health and dental coverage for you and your family
• Competitive paid time off and flexible leave policies
• Retirement savings programs and employer contributions
• Dedicated learning and development budget
• Remote and hybrid work options
• Equipment allowances
• Internet reimbursements
• Business travel coverage
• Employee stock options (ESOP), where applicable

What This Job Offers

• Job Type: Full-time
• Career Level: Senior
• Education Level: No Education Listed