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Added 10 mins ago
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Sales Enablement Manager
Owner.com
Toronto, ON
- Full-time
Owner is the AI-native system local business owners use to succeed, starting with restaurants.
Added 24 mins ago
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Platform & Site Reliability Engineer
adidas
Woodbridge, ON
- Full-time
In this role, you will collaborate with a Solution Architect, Technical Lead, Product Owner, Software Developer, as well as quality engineering, security partners, and business stakeholders…
Added 24 mins ago
AA
Business Development Representative
Anyset AI
Montreal, QC
- Full-time
…field so they can prepare that data for digital delivery to the owner. Today, that work happens almost entirely in email and spreadsheets. It's slow, and it usually ends in a PDF…
Added 55 mins ago
LC
Pharmacy Assistant, Hourly Part Time Day
Loblaw Companies Limited
St. John's, NL · Greater St. John's Metropolitan Area
- Part-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 55 mins ago
LC
Pharmacy Assistant, Hourly Part Time Day
Loblaw Companies Limited
Lethbridge, AB
- Part-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 55 mins ago
GC
Data Engineer
GEI Consultants, Inc.
Guelph, ON
- $90,000 to $150,000 CAD / year
- Full-time
Opportunity to be an Owner and Shareholder (Learn more here)
Added 55 mins ago
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Property Manager - Independent Contractor
House of Rosie
Calgary, AB · Greater Calgary Metropolitan Area
- Contract
- Be the main relationship contact for your property-owner clients.
Added 56 mins ago
Officer, Human Resources Business Partner (Field)
Canada Post - Postes Canada
Edmonton, AB
…Manager, HR SMEs, colleagues and/or functional process and policy owner(s) when needed, while adhering to policies and processes (e.g., Workplace Violence &…
Added 1 hour ago
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Veterinary Receptionist, Animal Care Centre of Strathmore
VCA Animal Hospitals
Strathmore, AB
- Internship
Invoicing/billing; creating estimates, obtaining pet owner confirmation and processing payments
Added 1 hour ago
LC
Beauty Specialist, Hourly Part Time Day
Loblaw Companies Limited
Fort McMurray, AB
- Part-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Pharmacy Assistant, Hourly Part Time Day
Loblaw Companies Limited
Oakville, ON
- Part-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Cashier, Hourly Part Time Day
Loblaw Companies Limited
Regina, SK
- Part-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Front Store Supervisor, Hourly Part Time Day
Loblaw Companies Limited
Regina, SK
- Part-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Cashier, Hourly Part Time Day
Loblaw Companies Limited
Hamilton, ON
- Part-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
SC
Excess Soil Specialist – Transit Project
SYSTRA Canada
Toronto, ON
- Full-time
Responsible for coordinating owner and contractor registration of the Project Area on the RPRA.
Added 1 hour ago
LC
Pharmacy Assistant, Hourly Part Time Evening
Loblaw Companies Limited
Toronto, ON
- Part-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Pharmacist, Hourly Part Time Flexible Shifts
Loblaw Companies Limited
Surrey, BC
- Part-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Pharmacy Assistant, Hourly Full Time Flexible Shifts
Loblaw Companies Limited
Lethbridge, AB
- Full-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Pharmacist, Hourly Full Time Flexible Shifts
Loblaw Companies Limited
Surrey, BC
- Full-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Beauty Specialist, Hourly Full Time Flexible Shifts
Loblaw Companies Limited
Calgary, AB
- Full-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Merchandiser, Hourly Full Time Flexible Shifts
Loblaw Companies Limited
Ottawa, ON · Nepean, ON
- Full-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
LC
Merchandiser, Hourly Full Time Flexible Shifts
Loblaw Companies Limited
Calgary, AB
- Full-time
Each store has an Associate-Owner, so you will work for a local business owner while having the support of a national brand. Benefit from a purchase discount program, flexible and varied…
Added 1 hour ago
C
Lead Analyste d’affaires
CGI
Quebec, QC
- Full-time
You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective…
Added 1 hour ago
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Stage coopératif - Hiver 2027: Développeur BI (4 mois)
CGI
Saguenay, QC
- Full-time
You are invited to be an owner from day 1 as we work together to bring our Dream to life. That’s why we call ourselves CGI Partners rather than employees. We benefit from our collective…
Added 1 hour ago
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Senior Systems & Network Administrator (Windows, Linux, Cisco & F5)
CGI
Toronto, ON
- Full-time

Reactiv

Full Stack Developer (Junior/Intermediate)

Toronto, ON, M5A 1M3, Canada

Full-time

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Job details

Job type: Full-time
Experience: ● Roughly 2 to 4 years of experience building web applications, or equivalent project
Posting language: English
Posted: Oct 6, 2026

Original job description

Full Stack Developer Junior / Intermediate

About Reactiv

Reactiv is an AI-powered platform that helps Shopify merchants build beautifully branded, high-converting mobile apps without the usual complexity. At the core of what we do is Reactiv Clips, a feature that removes the need for app downloads so brands can deliver fully customized app experiences instantly and without friction. By lowering the barrier to great mobile experiences, we're building the future of mobile commerce, and we're growing our engineering team to help shape what comes next.

About the Role

We're looking for a Junior to Intermediate Full Stack Developer to help build and improve the platform our merchants rely on every day, from the dashboard they use to design and manage their apps to the e-commerce APIs that power them. You'll ship real features from early on, with support and mentorship from our engineering team to help you grow. Most of your work will be in TypeScript across React on the frontend and Node.js on the backend, with the chance to go deeper on whichever side excites you most. This is a hands-on role for someone earlier in their career who wants to develop into a strong full stack engineer in a collaborative, hybrid environment. You don't need to check every box below; if you're solid on the fundamentals and eager to learn the rest, we want to hear from you.

What You'll Do

Build and maintain features across our merchant dashboard React and TypeScript) and our backend services and e-commerce APIs Node.js and TypeScript).
Write and consume RESTful and GraphQL APIs that connect our frontend experiences to server-side functionality.
Work with relational databases such as Postgres: designing simple schemas, writing queries, and learning optimization along the way.
Contribute to our Shopify integrations that keep merchant data in sync.
Collaborate with product, design, and other engineers to define, design, and ship new features.
Help keep the platform fast and reliable by improving performance and responsiveness on both sides of the stack.
Take part in code reviews, both giving and receiving feedback, as part of how we maintain quality.
Troubleshoot and fix issues across the stack to improve the experience for merchants.

What We're Looking For

Required

Working knowledge of React and a solid grasp of its core concepts.
Some experience building backend services or APIs with Node.js.
Comfortable writing TypeScript, or strong JavaScript with a willingness to pick up TypeScript quickly.
An understanding of how frontend and backend talk to each other: RESTful APIs, requests, responses, and error handling.
Familiarity with relational databases such as Postgres or MySQL.
Strong problem-solving instincts and eagerness to learn in a fast-moving, collaborative team.
Roughly 2 to 4 years of experience building web applications, or equivalent project and portfolio work.

Nice to Have

Experience with GraphQL.
Familiarity with the Shopify ecosystem, or an interest in ecommerce.
Exposure to AWS services Lambda, S3, RDS, DynamoDB or other cloud infrastructure.
Experience with a React framework such as Next.js or React Router (formerly Remix).
Experience writing automated tests Jest, React Testing Library, or integration tests).
Understanding of authorization concepts such as OAuth and JSON Web Tokens.
Familiarity with CI/CD practices.
Exposure to React Native, or interest in contributing to mobile.

Why Join Us

Mentorship and growth: You'll have regular code review, pairing, and support from experienced engineers, with a clear path from junior to intermediate and beyond.
Level up with AI We're constantly exploring how AI can make us better engineers, and you'll have real freedom to experiment with cutting-edge tools rather than wait for permission. It's a fast way to grow.
Real impact: The features you build are used by merchants running their businesses around the world.
Hybrid work environment: We believe in a hybrid model to create opportunities for intentional in-person collaboration (and mentorship) while balancing that with the deep focus time that comes from working remotely. You'll join the team in our Toronto office 2 to 3 days a week with the flexibility to work remotely the rest of the time.
You're an owner: Every engineer at Reactiv gets equity, so you share in the upside you help create. You're not just building the product, you own a piece of it.
Benefits from day one: Extended health and dental coverage that kicks in the day you start, no waiting period.
Unlimited PTO We take time off seriously here. Most of our engineers take around three weeks a year, and more when they need it, and we actively encourage stepping away to rest and protect against burnout.

How to Apply

Send your resume and any project links, portfolio, or GitHub profile to careers@reactiv.ai. A cover letter is optional, but we'd welcome a short note on why this role interests you.

Apply About employer

More about this job

Responsibilities

You will build and maintain features across the merchant dashboard and backend services using TypeScript, React, and Node.js. Additionally, you will collaborate with product and design teams to ship new features while ensuring platform performance and reliability.

Requirements

The role requires 2 to 4 years of experience with React, Node.js, and TypeScript, along with a solid understanding of RESTful APIs and relational databases. Strong problem-solving skills and an eagerness to learn in a collaborative, fast-moving environment are essential.

Skills

TypeScript
React
Node.js
Postgres
RESTful APIs
GraphQL
Shopify
JavaScript
AWS
Next.js
React Router
Jest
React Testing Library
OAuth
CI/CD

Benefits

Equity
Extended health coverage
Dental coverage
Unlimited PTO

Visa sponsorship

Not detected in the job text

Keywords

Full Stack Developer
TypeScript
React
Node.js
Shopify
RESTful APIs
GraphQL
Postgres
MySQL
AWS
Lambda
S3
RDS
DynamoDB
Next.js
React Router
Jest
React Testing Library
OAuth
JSON Web Tokens
CI/CD
React Native
Mobile Commerce
Engineering
Hybrid Work
Equity
Mentorship
AI
Web Applications
Software Development

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