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About the Role

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.

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

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
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

Skills

React
Next.js
Python
JavaScript
REST API
TypeScript
SQL
PostgreSQL
AI-driven development
AI-assisted engineering workflows
LLM-integrated development
RAG
Retrieval-augmented patterns
FastAPI
SQLAlchemy
CI/CD pipelines
Cloud deployment

Location

Toronto

Work Type

Onsite
Hybrid
Full-Time

Experience Level

4-6 years

Salary/Compensations

$105-125K CAD per year (negotiable)

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

About the Company

Fulfillment IQ is a supply chain engineering and transformation company that helps brands, retailers, and 3PLs design, build, and scale high-performance logistics operations.
We work at the intersection of strategy, operations, and technology where we solve complex, real-world problems across warehouse design, automation, order management, transportation, and end-to-end supply chain execution.
Our teams combine deep domain expertise with strong technical capability, delivering outcomes through consulting, systems implementation, and proprietary platforms that accelerate time-to-value and reduce delivery risk.
If you enjoy working in complex environments, partnering closely with clients, and seeing your work make a tangible impact on how global commerce moves, this is the place where your skills and judgment truly come to life.
At Fulfillment IQ, we don’t just build supply chain solutions. We build careers, friendships, and unforgettable experiences.
We believe in giving our senior technical leaders real ownership, real influence, and the opportunity to shape platforms that power real-world logistics operations.
Fulfillment IQ is a people-first company built in trust, collaboration, and ownership. We are proud to be an equal opportunity employer and are committed to building a diverse, inclusive, and high-performing workplace.

Equal Opportunity

As an equal opportunity employer, we celebrate diversity and are committed to creating an inclusive environment for all team members.
Fulfillment IQ is a people-first company built on trust, collaboration, and ownership. We are proud to be an equal opportunity employer and are committed to building a diverse, inclusive, and high-performing workplace.