Backend Engineer III

Fulfillment IQ

Backend Engineer III building services and APIs for a greenfield platform at Fulfillment IQ. Collaborating with teams to ensure data integrity and performance in supply chain technology.

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 designing and building backend services and APIs, with strong proficiency in Python and relational database management. Capable of translating requirements into scalable, production-ready systems while ensuring performance and reliability.

Highest-signal resume keywords

Python FluencyREST API DevelopmentDatabase Schema DesignSQL ProficiencyORM Experience

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Backend Service DevelopmentAPI DesignData ModelingDatabase MigrationPerformance OptimizationTestingBusiness Logic ImplementationWorkflow ProcessingCode ReviewTechnical Design

Soft Skills

CollaborationOwnershipAdaptability

Tools & Technologies

FastAPIFlaskDjangoPostgreSQL

Industry Keywords

Data IntegrityAPI PerformanceEngineering StandardsEarly-Stage Environment

Tech Stack

Tools & technologies

DjangoFlaskPostgresPythonSQL

About the role

Key responsibilities & impact

Design and build backend services, APIs, and data models
Implement business logic and processing workflows
Design relational schemas and manage database migrations
Ensure data integrity, correctness, and API performance
Write tests and contribute to shared engineering standards
Integrate with external systems and data sources
Collaborate closely with full-stack engineers, product, and the platform's technical owner
Participate in code review and technical design
Help evolve the backend architecture as the platform scales

Requirements

What you’ll need

4-6 years of experience building backend services and APIs
Strong, hands-on Python fluency; you will write production Python from day one
Experience designing and building REST APIs, ideally with FastAPI, Flask, or Django
Strong relational database skills, including schema design and SQL (PostgreSQL or similar)
Experience with ORMs and data modeling
Ability to translate requirements into robust, production-ready backend systems
Strong engineering fundamentals across performance, reliability, 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