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Added 1 month ago
GD
GARAGE - Assistant Manager - Chinook Centre
Groupe Dynamite, Inc Garage
Calgary, AB
- Full-time
Reporting to the Store Manager, your main focus as the Assistant Manager is to assist the Store Manager in all aspects of the store operations, by providing leadership that optimizes sales…
Added 1 month ago
TM
General Manager
The MRG Group
Vancouver, BC · Greater Vancouver Metropolitan Area
- $65,000 to $70,000 CAD / year
- Full-time
Founded in 2008, The MRG Group is Canada’s largest independent entertainment company, specializing in live entertainment, hospitality, ticketing, travel, and digital media.
Added 2 months ago
MH
Manager, End User Support Services
Mackenzie Health
Richmond Hill, ON
- $111,365 to $142,116 CAD / year
- Full-time
Reporting to the Director, Application and End-user Support, the Manager, End User Support Services will manage a team of Service Desk and System Support Analysts, responsible to provide…
Added 2 months ago
Engineering Bid Manager
Alstom
Saint-Bruno, QC
Hybrid : 3 days in office / 2 days remote
Added 2 months ago
S
Senior Project Manager, Mission Critical
Stantec
Toronto, ON
- Full-time
The Senior Project Manager is directly responsible for the overall successful execution and delivery of the project, both to the Client and Stantec, according to the contract. The Senior…
Added 1 month ago
Q
FY27 Intern - Low-Power AI, Audio, and Sensors Subsystem Engineering Internship - ASIC Design / Verification/Implementation - Canada (12 or 16 months)
Qualcomm
Markham, ON
- Full-time
Must have a minimum of one semester of university remaining after the internship concludes
Added 1 month ago
Q
FY27 Intern - Low-Power AI, Audio, and Sensors Subsystem Engineering Internship - ASIC Firmware / Embedded - Canada (12 or 16 months)
Qualcomm
Markham, ON
- Full-time
Must have a minimum of one semester of university remaining after the internship concludes
Added 1 month ago
V
Senior Analyst, Procurement
Vale
Canada
- Full-time
…transforming critical minerals into prosperity and sustainable development in countries like Canada, Brazil, Indonesia, the United Kingdom, and Japan. We invite you to use your skills with…
Added 1 month ago
PI
Data Engineering Manager, Regulatory Compliance
PENN Interactive
Canada
- Full-time
When you join PENN Entertainment’s digital team, you’ll not only work on these cutting-edge platforms through theScore and PENN Interactive, but you’ll also be part of a company that truly…
Added 1 month ago
S
Senior Consultant - Technical Project Manager
Slalom
Vancouver, BC · Greater Vancouver Metropolitan Area
- Full-time
…transformation initiatives in roles such as Senior Project Manager, Program Manager, Senior Business Analyst, or Delivery…
Added 1 month ago
CE
Customer Success Manager - AI/GPU Cloud Infrastructure
Capital Executive Search
Vancouver, BC · Greater Vancouver, BC
- $100,000 to $130,000 CAD / year
- Full-time
…customer base, they're creating a brand-new Customer Success Manager role to be the face of the business for a portfolio of key…
Added 1 month ago
SI
Senior Manager, Performance & Organic Growth
Scribd, Inc.
Vancouver, BC · Ottawa, ON · Toronto, ON
- Full-time
Employees must have their primary residence in or near one of the following cities
Added 1 month ago
PC
Cyber Generalist, Manager
Pwc Canada
Toronto, ON
- Full-time
As a Cyber Generalist, Manager, unlock your potential and embrace the chance to drive meaningful outcomes that’ll elevate your career. Your role will include, but isn’t limited to:
Added 1 month ago
PC
SAP Integration Senior Manager (Bilingual FR/EN)
Pwc Canada
Montreal, QC
- Full-time
As an SAP integration Senior Manager (Bilingual FR/EN), unlock your potential and embrace the chance to drive meaningful outcomes that’ll elevate your career. Your role will include, but…
Added 1 month ago
M
Senior Business Development Manager
MTFX
Toronto, ON · North York, ON
- Full-time
…and cross-border payment solutions, we empower companies with digital tools and automation to streamline their international financial…
Added 1 month ago
SG
Lead Technician (Castor, AB)
Siemens Gamesa
AB · Wheatland County, AB
- Full-time
As a Lead Technician at our wind farm, you will serve as a key operational leader supporting the Service Operations Manager (SOM) and acting as an extension of site management. You will…
Added 1 month ago
FA
Manager, Member Services
Facility Association
Toronto, ON
- $100,000 to $115,000 CAD / year
- Full-time
Reporting to the Director, Data & Analytics, the Manager, Member Services will be required to serve as the Member Services "Team Lead" to liaise, coordinate and manage collaborative process…
Added 1 month ago
IB
Customer Experience Manager
Indigo Books & Music
Burnaby, BC
- $42,000 to $69,000 CAD / year
- Full-time
The Customer Experience Manager is responsible for the customer experience and the store’s omni sales results. They lead a team to master Indigo’s service model and to suggest and sell…
Added 1 month ago
PC
Cyber Generalist, Manager
PwC Canada
Toronto, ON
- Full-time
As a Cyber Generalist, Manager, unlock your potential and embrace the chance to drive meaningful outcomes that’ll elevate your career. Your role will include, but isn’t limited to:
Added 1 month ago
Senior Fullstack Developer
Stay22
Montreal, QC
Based in Montreal, Stay22 helps ambitious creators and intent-rich digital platforms turn their existing traffic into incremental revenue, with technology that works quietly in the…
Added 1 month ago
S
Civil Technologist / Technician
Stantec
Whitehorse, YT
- Full-time
Works with other engineering disciplines and professionals in the completion of the project under the direction of a project coordinator or project manager.
Added 2 months ago
Senior Manager - Supply Chain, Procurement Transformation (Defense and GPS Sector Focus) - Ottawa
EY
Ottawa, ON · Montreal, QC
To Qualify for the Role, You Must Have
Added 1 month ago
IB
Customer Experience Leader
Indigo Books & Music
Lloydminster, AB
- Part-time
Indigo is a physical and digital place inspired by and filled with books, ideas, beautifully designed lifestyle products, and the creative people who help make it all happen. We believe in…
Added 1 month ago
I
Customer Experience Leader
Indigo
Lloydminster, AB
- Part-time
Indigo is a physical and digital place inspired by and filled with books, ideas, beautifully designed lifestyle products, and the creative people who help make it all happen. We believe in…
Added 1 month ago
GD
GARAGE - Assistant Manager - Chinook Centre
Groupe Dynamite
Calgary, AB
- Full-time
Reporting to the Store Manager, your main focus as the Assistant Manager is to assist the Store Manager in all aspects of the store operations, by providing leadership that optimizes sales…

Stay22

Senior Fullstack Developer

Montreal, QC, Canada

Apply on job-boards.greenhouse.io About employer

Applications open in a new tab.

Job details

Posting language: English · French
Posted: Sep 15, 2026

Original job description

English section of this bilingual listing.

-Version française à suivre-

About Stay22

Based in Montreal, Stay22 helps ambitious creators and intent-rich digital platforms turn their existing traffic into incremental revenue, with technology that works quietly in the background.

Today, more than 6,500 creators and platforms rely on Stay22, with over $1 billion in annual transactions flowing through the platform. Originally built for travel, the company now supports partners across retail, lifestyle, publishing, events, and transport as it expands its monetization infrastructure for the modern creator economy.

About the role

As a Senior Fullstack Developer on the Phantom team, you will play a key role in advancing our embedded widget and affiliate platform. Your mission will be to streamline browser execution and ensure high performance of our scripts across diverse websites.

You will design mechanisms for privacy-conscious session tracking and fingerprinting, and take ownership of the full script lifecycle – from load optimization to event handling and error recovery. Working closely with product and engineering leads, you will help shape and maintain the core infrastructure that powers Stay22's embeddable products, ensuring they run reliably under real-world constraints.

Key Responsibilities

Continuously improve the load time and execution efficiency of our browser scripts (minification, caching, lazy loading, etc.)
Create robust methods for injecting content and widgets into arbitrary websites (e.g. automating DOM manipulation, handling dynamic page layouts)
Architect and execute A/B/n experimental setups alongside analytics teammates, leveraging data metrics to guide key product shifts
Solid grasp of Express.js middleware and user session administration, applying core security principles to server-side code
Build and maintain Node.js/Python-based scrapers to collect data from partner websites or APIs when needed; design fallback data sources for resiliency
Troubleshoot and adapt our runtime logic for real-world usage, including handling unexpected page structures or third-party script conflicts
Own the entire embedded product stack (scripts, SDKs, APIs) and collaborate with other teams to integrate updates and new features smoothly

Requirements

Deep hands-on experience with vanilla and ES6+ JavaScript or TypeScript without relying on frameworks (no React/Vue/etc. for core logic)
Strong knowledge of the browser event loop, DOM API, CSSOM, rendering pipeline, and how to optimize for First Contentful Paint (FCP), Largest Contentful Paint (LCP), etc.
Proficiency with Node.js for building APIs and web scrapers; experience with Python-based scraping is a plus. Familiarity with HTTP, REST/JSON, and proxies
Understanding of browser fingerprinting methods and privacy considerations (e.g. cookie/session management, CORS, GDPR). This is a big asset
Public contributions on GitHub or other open-source involvement (project contributions, libraries) are strongly preferred
Bachelor's or Master's in Computer Science (or equivalent) is a plus, or equivalent professional experience in software development

What to Expect from our Hiring Process

We know your time’s valuable, so here’s the quick rundown of what to expect.

Screening call with our Talent Acquisition Advisor - virtual (20-30 minutes)

Whiteboarding session oriented on System Design (Miro) with the Engineering Team - virtual (60 minutes)

Hiring Manager Interview - virtual (45min)

Panel Interview with stakeholders and peers - in person (45min)

Final interview with our CEO - virtual (30 minutes)

Offer & Onboarding 🎉

Please note that this process is subject to change at any point, based on additional requirements from the team.

Why join Stay22?

Prime Montreal Location: Work from our vibrant Little Italy HQ with a cafeteria allowance, full gym access, and a rooftop terrace complete with a seasonal basketball/pickleball court & hockey rink.
Comprehensive Benefits: Health & dental coverage, RRSP matching, fully paid STM pass’, and regular team socials, events, and retreats.
Flexibility That Works: Flexible schedules, work-from-anywhere opportunities, year-end shutdown, and flex days.

(Stay22 is an equal-opportunity employer. All qualified applicants are given consideration. If you have a disability or particular need that requires accommodation, please contact us at careers@stay22.com)

Your application will be reviewed by Nayo, our internal recruiter- even if you don’t meet every requirement but you’re excited, let’s talk.

__________________________________

À propos de Stay22

Read the full bilingual original

-Version française à suivre-

About Stay22

Based in Montreal, Stay22 helps ambitious creators and intent-rich digital platforms turn their existing traffic into incremental revenue, with technology that works quietly in the background.

About the role

Key Responsibilities

Continuously improve the load time and execution efficiency of our browser scripts (minification, caching, lazy loading, etc.)
Create robust methods for injecting content and widgets into arbitrary websites (e.g. automating DOM manipulation, handling dynamic page layouts)
Architect and execute A/B/n experimental setups alongside analytics teammates, leveraging data metrics to guide key product shifts
Solid grasp of Express.js middleware and user session administration, applying core security principles to server-side code
Build and maintain Node.js/Python-based scrapers to collect data from partner websites or APIs when needed; design fallback data sources for resiliency
Troubleshoot and adapt our runtime logic for real-world usage, including handling unexpected page structures or third-party script conflicts
Own the entire embedded product stack (scripts, SDKs, APIs) and collaborate with other teams to integrate updates and new features smoothly

Requirements

Deep hands-on experience with vanilla and ES6+ JavaScript or TypeScript without relying on frameworks (no React/Vue/etc. for core logic)
Strong knowledge of the browser event loop, DOM API, CSSOM, rendering pipeline, and how to optimize for First Contentful Paint (FCP), Largest Contentful Paint (LCP), etc.
Proficiency with Node.js for building APIs and web scrapers; experience with Python-based scraping is a plus. Familiarity with HTTP, REST/JSON, and proxies
Understanding of browser fingerprinting methods and privacy considerations (e.g. cookie/session management, CORS, GDPR). This is a big asset
Public contributions on GitHub or other open-source involvement (project contributions, libraries) are strongly preferred
Bachelor's or Master's in Computer Science (or equivalent) is a plus, or equivalent professional experience in software development

What to Expect from our Hiring Process

We know your time’s valuable, so here’s the quick rundown of what to expect.

Screening call with our Talent Acquisition Advisor - virtual (20-30 minutes)
Whiteboarding session oriented on System Design (Miro) with the Engineering Team - virtual (60 minutes)
Hiring Manager Interview - virtual (45min)
Panel Interview with stakeholders and peers - in person (45min)
Final interview with our CEO - virtual (30 minutes)
Offer & Onboarding 🎉

Please note that this process is subject to change at any point, based on additional requirements from the team.

Why join Stay22?

Prime Montreal Location: Work from our vibrant Little Italy HQ with a cafeteria allowance, full gym access, and a rooftop terrace complete with a seasonal basketball/pickleball court & hockey rink.
Comprehensive Benefits: Health & dental coverage, RRSP matching, fully paid STM pass’, and regular team socials, events, and retreats.
Flexibility That Works: Flexible schedules, work-from-anywhere opportunities, year-end shutdown, and flex days.

Your application will be reviewed by Nayo, our internal recruiter- even if you don’t meet every requirement but you’re excited, let’s talk.

__________________________________

À propos de Stay22

Basée à Montréal, Stay22 aide les créateurs ambitieux et les plateformes numériques à forte intention à transformer leur trafic existant en revenus additionnels, grâce à une technologie qui fonctionne discrètement en arrière-plan.

Aujourd’hui, plus de 6 500 créateurs et plateformes font confiance à Stay22, avec plus d’un milliard de dollars en transactions annuelles transitant par la plateforme. Initialement conçue pour le secteur du voyage, l’entreprise accompagne désormais des partenaires dans les domaines du commerce de détail, du lifestyle, de l’édition, des événements et du transport, alors qu’elle poursuit l’expansion de son infrastructure de monétisation pour l’économie moderne des créateurs.

À propos du poste

En tant que Développeur·se Fullstack Senior au sein du groupe Phantom, ton rôle sera déterminant pour faire progresser nos solutions d'affiliation et nos widgets embarqués. Ton objectif consistera à fluidifier l'exécution côté navigateur tout en garantissant une performance optimale de nos scripts sur une multitude de plateformes externes.

Tu élaboreras des dispositifs de suivi de session et de fingerprinting respectueux des exigences de confidentialité, tout en pilotant le cycle de vie complet du code client - de l'optimisation des temps de charge à la gestion des événements et à la résilience face aux erreurs. En synergie avec les responsables produit et ingénierie, tu participeras au façonnement et au maintien des fondations techniques qui alimentent les solutions Stay22, pour un fonctionnement irréprochable sur le terrain.

Responsabilités principales

Optimiser sans relâche la rapidité d'affichage et la légèreté d'exécution de nos scripts navigateur (minification, stratégie de cache, lazy loading)
Concevoir des mécanismes fiables pour l'insertion de modules et d'éléments visuels sur n'importe quel site tiers (manipulation automatisée du DOM, gestion des structures dynamiques)
Mettre en place et déployer des expérimentations A/B/n avec les spécialistes en analyse de données, en t'appuyant sur les indicateurs de performance pour guider les choix produit
Maîtriser les rouages des middlewares Express.js et du traitement des sessions utilisateur, tout en appliquant les normes de sécurité indispensables au code serveur
Développer et entretenir des outils de collecte en Node.js/Python pour extraire les informations des partenaires ou API au besoin, en prévoyant des flux secondaires de secours
Résoudre et ajuster notre logique applicative face aux anomalies du monde réel, notamment les dispositions de page inhabituelles ou les interférences avec d'autres scripts
Assurer la responsabilité complète du périmètre applicatif embarqué (scripts, SDKs, API) et coopérer avec les autres pôles pour intégrer harmonieusement évolutions et nouveautés

Exigences

Expérience concrète et approfondie en JavaScript vanilla et ES6+ ou en TypeScript, sans dépendance aux frameworks pour la logique principale (pas de React/Vue/etc. pour le cœur du système)
Solide connaissance de l'event loop du navigateur, du DOM API, du CSSOM, du pipeline de rendu, et des façons d'optimiser le First Contentful Paint (FCP), le Largest Contentful Paint (LCP), etc.
Maîtrise de Node.js pour la création d'API et de scrapers web; une expérience en scraping avec Python est un atout. Connaissance de HTTP, REST/JSON et des proxies
Compréhension des méthodes de fingerprinting du navigateur et des considérations liées à la vie privée (gestion des cookies/sessions, CORS, RGPD). C'est un atout important
Des contributions publiques sur GitHub ou une implication dans des projets open source (contributions, librairies) sont fortement souhaitées
Un baccalauréat ou une maîtrise en informatique (ou équivalent) est un atout, ou une expérience professionnelle équivalente en développement logiciel

Processus de recrutement

Premier échange avec notre conseiller en acquisition de talents – en virtuel (20 à 30 minutes)
Séance de tableau blanc sur la conception de systèmes (Miro) avec l’équipe d’ingénierie – en virtuel (60 minutes)
Entrevue avec la gestionnaire d’embauche – en virtuel (45 minutes)
Entrevue de groupe avec des membres de l’équipe et des partenaires clés – en personne (45 minutes)
Dernière rencontre avec notre PDG – en virtuel (30 minutes)
Offre d’emploi et intégration 🎉

Le processus peut évoluer selon les besoins de l’équipe.

Pourquoi rejoindre Stay22 ?

Emplacement de choix à Montréal : Travaille depuis notre dynamique siège social situé dans la Petite-Italie, avec une allocation pour la cafétéria, un accès complet au gym, ainsi qu'une terrasse sur le toit comprenant un terrain saisonnier de basketball/pickleball et une patinoire de hockey.
Une gamme complète d’avantages sociaux : Couverture santé et dentaire, contribution de l’employeur au REER, titre de transport STM entièrement payé, ainsi que des activités d’équipe, événements et retraites réguliers.
Une flexibilité adaptée à ta réalité : Horaires flexibles, possibilités de travailler de n’importe où, fermeture des bureaux en fin d’année et journées flexibles.

(Stay22 est un employeur garantissant l'égalité des chances. Toutes les candidatures qualifiées seront examinées. Si tu as un handicap ou des besoins particuliers nécessitant des aménagements, contacte-nous à careers@stay22.com.)

Ton CV sera lu par Nayo, notre recruteur interne, même si tu ne coches pas toutes les cases, on aimerait quand même te rencontrer.

Apply on job-boards.greenhouse.io About employer

More about this job

Responsibilities

You will optimize the performance and load efficiency of browser scripts while managing the full lifecycle of embedded products. Additionally, you will architect data collection methods and collaborate with cross-functional teams to integrate new features.

Requirements

Candidates must have deep hands-on experience with vanilla JavaScript or TypeScript and a strong understanding of browser internals and rendering pipelines. Proficiency in Node.js and familiarity with web scraping, privacy considerations, and system design are also required.

Skills

JavaScript
TypeScript
Node.js
Python
DOM API
CSSOM
Express.js
Web scraping
Browser fingerprinting
REST APIs
System design
Performance optimization
CORS
GDPR
HTTP

Benefits

Health insurance
Dental coverage
RRSP matching
Paid STM pass
Cafeteria allowance
Gym access
Rooftop terrace
Flexible schedules
Work-from-anywhere opportunities
Year-end shutdown
Flex days

Visa sponsorship

Not detected in the job text

Hiring contact

Nayo

Keywords

Fullstack Developer
JavaScript
TypeScript
Node.js
Python
Express.js
DOM manipulation
Web scraping
Browser fingerprinting
Performance optimization
REST
JSON
CORS
GDPR
System design
SDK
API
Affiliate platform
Creator economy
Software development

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Jobs in Canada