Full-Stack Engineer III

Fulfillment IQ

Full-Stack Engineer III at Fulfillment IQ building a new platform for supply chain expertise. Focus on developing user-facing features with React and backend APIs in a hybrid work environment.

Posted 7/20/2026full-timeToronto • 🇨🇦 CanadaMid-LevelSenior💰 CA$105,000 - CA$125,000 per yearWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in building user-facing features using React and modern JavaScript, with a strong focus on REST API integration and application performance. Proven ability to translate product requirements into production-ready functionality while maintaining high engineering standards.

Highest-signal resume keywords

React DevelopmentREST API DesignJavaScript ProficiencyTypeScript KnowledgeSQL Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

ReactJavaScriptREST APIsTypeScriptSQLPostgreSQLCode QualityTestingMaintainabilityFrontend Architecture

Soft Skills

CollaborationTechnical DiscussionOwnershipAdaptabilityProblem-Solving

Tools & Technologies

.NETPythonNode.js

Industry Keywords

Web ApplicationsFrontend DevelopmentUser ExperienceEngineering StandardsFast-Moving Environment

Tech Stack

Tools & technologies

JavaScript.NETNode.jsPostgresPythonReactSQLTypeScript

About the role

Key responsibilities & impact

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

What you’ll need

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

Benefits

Comp & perks

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, and employee stock options (ESOP), where applicable.
Team events, meetups, and company offsites