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Added 18 days ago
TR
JREQ203081 Staff Software Engineer I (Open)
Thomson Reuters
Toronto, ON
- Full-time
…engineering problem to solve, not a fact of life. You use AI-assisted development as a primary tool, with the majority of code written with AI assistance. And you practice verified…
Added 18 days ago
Senior Software Developer, Mobile (iOS), Platforms and Devices
Google
Waterloo, ON
Write and test product or system development code.
Added 18 days ago
E
Staff Eng, API Design & Governance
eBay
Toronto, ON
- Full-time
We are hiring a Staff Engineer, API Design & Governance to help shape the architecture, quality, and long-term evolution of the systems and APIs that power these experiences. This is an…
Added 18 days ago
SI
Senior iOS Engineer
Scribd, Inc.
Toronto, ON · Vancouver, BC
- Full-time
We are seeking a Senior iOS Engineer to join our Growth Retention & Monetization team. You will be the iOS technical owner for the team across the Everand and Scribd apps, and lead the…
Added 18 days ago
FT
Lead Software Engineer
Franklin Templeton
Toronto, ON
- Full-time
Focus on automation, new Snowflake capabilities, and AI-assisted development
Added 18 days ago
Project Manager (Infrastructure & Facilities)
The City of Red Deer
Red Deer, AB
The Project Manager/Engineer reports to the Capital Projects Engineer in the planning and delivery of municipal capital projects and municipal facility upgrades as assigned. This includes…
Added 18 days ago
LC
Engineer - Process
Linamar Corporation
Guelph, ON
- Full-time
Linamar Corporation is a Canadian-founded global manufacturer, renowned for its advanced engineering and innovative product development across diverse industries and markets. Our journey…
Added 18 days ago
LC
Mechanical Design Engineer- Continuous Improvement
Linamar Corporation
Guelph, ON
- Full-time
Reporting to a Design Engineering Supervisor, the successful candidate will work on small to medium sized product design and development projects to resolve production issues from a design…
Added 18 days ago
M
Senior Full Stack Engineer, Customer & Cardholder Experiences
Marqeta
Remote, Canada
- Full-time
- Remote
We are looking for a Senior Full Stack Software Engineer to join our Customer & Cardholder Experiences team, delivering innovative UIs and embeddable solutions to transform the experience…
Added 18 days ago
H
Technical Project Manager
Heidi
Remote, Canada
- $130,000 to $145,000 CAD / year
- Full-time
- Remote
You'll work closely with Customer Success, Engineering, Clinical Associates, and Product to navigate complex enterprise implementations involving EHR integrations, custom clinical…
Added 18 days ago
T
Intermediate Software Engineer (Agentic AI Verification)
Trulioo
Vancouver, BC
- Full-time
Reporting to the Senior Director, Engineering, the Intermediate Software Engineer will be responsible for building and hardening Trulioo's Agentic AI Verification capabilities, taking…
Added 18 days ago
R
Full Stack Developer (Junior/Intermediate)
Reactiv
Toronto, ON
- Full-time
stack engineer in a collaborative, hybrid environment. You don't need to check every box
Added 18 days ago
AI
Manufacturing Engineer
Apex Industries Inc.
Moncton, NB
- Full-time
The Manufacturing Engineer will play a key role in driving operational excellence, continuous improvement, automation, process development, and technology integration across the Aerospace…
Added 18 days ago
LT
Automation and Build Developer II
LMI Technologies
Burnaby, BC
- Full-time
Join our Software Operations team as a Build & Test Automation Engineer and become the engine behind how our code gets from a developer's keyboard to a sensor on that line.
Added 18 days ago
AI
Manufacturing Engineer
Apex Industries
Moncton, NB
- Full-time
The Manufacturing Engineer will play a key role in driving operational excellence, continuous improvement, automation, process development, and technology integration across the Aerospace…
Added 18 days ago
Co-op/Intern - Environmental Engineer
Gerdau
Selkirk, MB
…on trust and teamwork, we offer meaningful work, continuous development, and opportunities to shape your future. We invite you to come work with us, where your contributions are valued,…
Added 18 days ago
N
Jr. Embedded BSP SW Engineer
Nokia
Ottawa, ON
- Full-time
Test hardware during development and fix all issues prior to product release
Added 18 days ago
LC
Mechanical Design Engineer - Line Support
Linamar Corporation
Guelph, ON
- Full-time
Reporting to a Design Engineering Supervisor, the successful candidate will work on small to medium sized product design and development projects to resolve production issues from a design…
Added 18 days ago
BS
Senior Design Quality Engineer / Ingénieur principal en qualité de la conception
Boston Scientific
Montreal, QC
- Full-time
Proactively identify gaps and opportunities for continuous improvement in product development processes, tools, and documentation.
Added 18 days ago
SI
Software Engineer, Android, Level 4
Snap Inc.
Toronto, ON
- Full-time
We’re looking for an Android Engineer to join Snap Inc!
Added 18 days ago
M
Senior Full Stack Java Engineer - Workforce Management (WFM)
Miratech
Canada
- Full-time
We are looking for a Senior Full Stack Engineer to join the Workforce Management product stream and build reliable solutions for forecasting, staffing, scheduling, real-time adherence,…
Added 18 days ago
Senior Software Engineer, Mortgage Engineering
Questrade Financial Group
Toronto, ON
As a Senior Software Engineer on this team, you'll be a senior individual contributor who owns a domain end to end - from technical decisions, architecture, and code reviews to production…
Added 18 days ago
LT
Automation and Build Developer II
LMI Technologies
Burnaby, BC
- $75,200 to $107,160 CAD / year
- Full-time
Join our Software Operations team as a Build & Test Automation Engineer and become the engine behind how our code gets from a developer's keyboard to a sensor on that line.
Added 18 days ago
WL
Market Manager - Data Center & Energy
Weidmuller Ltd
Markham, ON
- $140,000 to $160,000 CAD / year
- Full-time
This position combines industry-focused business development with strategic account leadership. It serves as the primary commercial and strategic interface between Weidmüller and key market…
Added 18 days ago
T
Software Engineer II - Angular / UI
TD
Toronto, ON
- Full-time
…opportunities to all colleagues. Growth opportunities and skill development are defining features of the colleague experience at TD. Our compensation policies and practices have been…

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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