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Added 18 days ago
C
Développeur(euse) Java sénior
CGI
Montreal, QC
- Full-time
Azure or AWS certifications (e.g., Azure Developer Associate, AWS Certified Developer, or Solutions Architect); GitHub Copilot or equivalent certifications.
Added 18 days ago
Z
Lead Data Engineer
ZS
Toronto, ON
- Full-time
Strong understanding of data warehousing concepts and cloud-based data platforms (e.g., AWS, Azure, GCP).
Added 18 days ago
C
Java Angular Full Stack Developer
Citi
Mississauga, ON
- Full-time
AWS certifications (Solutions Architect, Developer Associate) or equivalent cloud credentials
Added 18 days ago
SI
Cloud Solutions Architect
STACK IT Recruitment
Remote, Canada
- Full-time
- Remote
Experience with more than one major cloud platform, such as Microsoft Azure, AWS, or Google Cloud
Added 18 days ago
M
Software Engineer II, Core Edge Processing
Marqeta
Remote, Canada
- Full-time
- Remote
An engineer with 2+ years of professional experience, including deploying and operating mission-critical services in AWS
Added 18 days ago
M
Staff Software Engineer - Core Edge Processing
Marqeta
Remote, Canada
- Full-time
- Remote
Cryptography or key management experience (HSM, AWS Payment Cryptography, KMS)
Added 18 days ago
D
Product Scrum & Functional Consultant - Operate
Deloitte
Toronto, ON
- Full-time
…infrastructure managed services and cloud operations portfolio across AWS, Azure, OCI and Google Cloud, ensuring market alignment, customer adoption, and revenue…
Added 18 days ago
Software Engineer I
RAM Engineering Ltd.
Vancouver, BC
…work primarily within a modern Node.js, TypeScript, React, and AWS environment while gaining further exposure to Python, databases, data integration, and emerging AI…
Added 18 days ago
A
Senior Manager, Data Governance Implementation
Aviso
Toronto, ON
- $115,000 to $135,000 CAD / year
- Full-time
Experience with visualization tools such as Power BI, Tableau and with cloud native or multi-cloud architectures such (Azure/AWS)
Added 18 days ago
AB
Senior Salesforce Enterprise Architect (hybrid job)
Ateko, backed by Bell Canada
Toronto, ON · Greater Toronto Area, Canada
- Contract
AWS, Azure, or Google Cloud certifications considered an asset.
Added 18 days ago
S
Software Developer - Data Pipelines
Squarepoint
Montreal, QC
- Full-time
We are seeking an experienced Python developer to join our Alpha Data team, responsible for delivering a vast quantity of data served to users worldwide. You will be a cornerstone of a…
Added 18 days ago
H
Full stack Developer
Hays
Toronto, ON
- Contract
Join our dynamic team as a Team Member, where you will leverage your expertise in AWS, TypeScript, Angular, and Node JS to drive innovative solutions. With a focus on the Hotels and Food…
Added 18 days ago
AW
Senior Manager, Data Governance Implementation
Aviso Wealth
Remote, Canada
- $115,000 to $135,000 CAD / year
- Full-time
- Remote
Experience with visualization tools such as Power BI, Tableau and with cloud native or multi-cloud architectures such (Azure/AWS)
Added 18 days ago
M
Senior Full Stack Engineer, Customer & Cardholder Experiences
Marqeta
Remote, Canada
- Full-time
- Remote
Experience in developing applications with modern Java backend stack using Spring Boot and Kubernetes on AWS.
Added 18 days ago
T
Intermediate Software Engineer (Agentic AI Verification)
Trulioo
Vancouver, BC
- Full-time
Build and maintain data ingestion and pipeline work that feeds the agent, using AWS and big-data tooling.
Added 18 days ago
R
Full Stack Developer (Junior/Intermediate)
Reactiv
Toronto, ON
- Full-time
We're looking for a Junior to Intermediate Full Stack Developer to help build and improve
Added 18 days ago
C
Industrial Welding Instructor
Cleaver-Brooks
Stratford, ON
- $75,000 to $90,000 CAD / year
- Full-time
AWS Certified Welding Inspector (CWI), CSA Welding Inspector, or equivalent certification considered an asset.
Added 18 days ago
GO
Assistant Works Supervisor
Government of Manitoba
Stony Mountain, MB
- Full-time
Salary(s): AWS $56,056.00 - $66,198.00 per year
Added 18 days ago
AW
Software Development Engineer II, S3 Shard Store
Amazon Web Services (AWS)
Vancouver, BC
- Full-time
Added 18 days ago
TR
AI Product Security Manager
Thomson Reuters
Toronto, ON · Canada, Toronto, Ontario
- Full-time
Experience with at least one major cloud provider (AWS, Azure, or GCP), including identity, networking, and secure configuration, alongside familiarity with containers.
Added 18 days ago
T
Software Engineer II - Angular / UI
TD
Toronto, ON
- Full-time
○ Familiar with Azure services/AWS, SonarQube, CI/CD pipelines, Jenkins.
Added 18 days ago
KC
Site Reliability Engineer
KPMG Canada
Vaughan, ON
- Full-time
Proven experience administering large applications in production grade cloud, with emphasis on Azure (other cloud AWS, GCP)
Added 18 days ago
DI
Senior IT Security Engineer
Draganfly Inc.
Burnaby, BC
- $120,000 to $140,000 CAD / year
- Full-time
Secure AWS IaaS/PaaS workloads through network controls, logging, encryption, secrets management, and configuration monitoring.
Added 18 days ago
B
Senior Software Engineer - Trading Technology
BettingJobs
Toronto, ON
- Full-time
Cloud platforms (Azure preferred, AWS also valued)
Added 18 days ago
SS
Security Operations Team Lead
Safe Software
Remote, Canada
- $126,000 to $137,000 CAD / year
- Full-time
- Remote
…Umbrella, Active Directory, JumpCloud, Google Workspace, and AWS security controls are configured, tuned, and delivering real detection value rather than…

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.

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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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