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Added 1 month ago
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Senior Analyst – AI Models Risk and Governance
RBC
Vancouver, BC · Toronto, ON
- Full-time
As a Senior Analyst – AI Models Risk and Governance, you are the strategic accelerator that takes our initiatives from concept to real world. You will provide sound risk advisory and…
Added 1 month ago
Senior Fullstack Developer
Stay22
Montreal, QC
Architect and execute A/B/n experimental setups alongside analytics teammates, leveraging data metrics to guide key product shifts
Added 1 month ago
RB
Senior Analyst – AI Models Risk and Governance
Royal Bank of Canada
Toronto, ON
- Full-time
As a Senior Analyst – AI Models Risk and Governance, you are the strategic accelerator that takes our initiatives from concept to real world. You will provide sound risk advisory and…
Added 1 month ago
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Staff Solutions Architect, Business Systems
Tonal
Remote, Canada
- $160,000 to $200,000 CAD / year
- Full-time
- Remote
The Staff Solutions Architect owns end-to-end solutioning for initiatives across Tonal's Business Systems ecosystem - NetSuite, Salesforce, our iPaaS/integration layer, and the connected…
Added 1 month ago
Sr. Director, NA GTM Architects
NetApp, Inc.
Toronto, ON · Waterloo, ON
…target customer areas (AI, Enterprise Apps, Cyber Resilience, Data Protection, Virtualization, IT Ops & Automation, and Power Reduction &…
Added 1 month ago
Senior Revenue Operations Manager - GTM Business Planning
New Relic
Toronto, ON
New Relic is looking for a Senior Revenue Operations Manager – GTM Business Planning to own the operating system behind how we plan, pay, and scale our Go-To-Market (GTM) organization.…
Added 1 month ago
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Senior IC Design Verification Engineer
NXP Semiconductors
Ottawa, ON · Kanata
- Full-time
Debug test failures to determine the root cause; work with architect and design engineers to resolve defects and correct issues
Added 1 month ago
Lead IAM Engineer
Braze
Toronto, ON
…enterprise identity and access management strategy. In this senior individual contributor role, you’ll architect, build, and continuously improve a secure, scalable, and automated identity…
Added 1 month ago
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Lead IAM Engineer
Braze
Toronto, ON
- Full-time
…enterprise identity and access management strategy. In this senior individual contributor role, you’ll architect, build, and continuously improve a secure, scalable, and automated identity…
Added 1 month ago
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Offensive Security Engineer
Epsilon Solutions Ltd.
Toronto, ON
- Contract
Architect and operationalize the end-to-end agentic AI patching pipeline spanning detection, fix generation, automated testing, and release across SAST, DAST, SCA, IAST, container, and…
Added 1 month ago
NB
Principal Developer - MuleSoft
National Bank of Canada
Edmonton, AB
- Full-time
As part of the IT sector, you'll be on a team of 5 colleagues and you'll report to the Senior Director - Delivery Lead. Our team stands out for its collaborative spirit, its commitment to…
Added 1 month ago
NB
Generative AI Solutions Architect
National Bank of Canada
Montreal, QC
- Full-time
A career as a Generative AI Solutions Architect within the Commercial and 1859 Technology and Innovation team at National Bank means acting as a specialist in the design and evolution of…
Added 1 month ago
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Senior Systems Engineer
Mobility Global
London, ON
- $97,500 to $130,000 CAD / year
- Full-time
Join our winning team as a Senior Systems Engineer
Added 1 month ago
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Senior Software Developer - AI Agents & Systems Design
Valsoft Corporation
Remote, Canada
- Full-time
- Remote
We are looking for a senior software developer who has made AI a structural part of how they build software - applying agentic systems, knowledge pipelines, and AI-connected tooling not as…
Added 1 month ago
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Graduate Intern Architect (Hiring Day Event ON)
GHD
Waterloo, ON
- Internship
If you're interested in participating in our Hiring Day and being considered for a Graduate Intern Architect role, we encourage you to review the job description below and apply if it…
Added 1 month ago
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Graduate Intern Architect (Hiring Day Event ON)
GHD
Mississauga, ON
- Internship
If you're interested in participating in our Hiring Day and being considered for a Graduate Intern Architect role, we encourage you to review the job description below and apply if it…
Added 1 month ago
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Graduate Intern Architect (Hiring Day Event ON)
GHD
Toronto, ON
- Internship
If you're interested in participating in our Hiring Day and being considered for a Graduate Intern Architect role, we encourage you to review the job description below and apply if it…
Added 1 month ago
BC
D365 Customer Engagement - CRM & CE
BDO Canada
Toronto, ON
- Full-time
3+ years of senior‑level Power BI experience, including data modeling, DAX, workspace governance, row‑level security, refresh optimization, and enterprise reporting aligned to Power…
Added 1 month ago
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Sr. Integration Architect - Automation
Infotree Global Solutions
Toronto, ON
- Contract
Expert-level Senior Integration Developer with Intelligent Automation experience to design, build, and govern mission-critical enterprise automation and integration solutions on Workato and…
Added 1 month ago
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Architecte de solutions SAP BTP et IA | SAP BTP AI Solutions Architect
Talan
Montreal, QC
- Full-time
Reporting to the Senior Director, Alliances and Presales, with a delivery reporting line to the Vice President, Delivery for engagement work, the SAP BTP AI Solutions Architect defines the…
Added 1 month ago
Director, CX Strategy
VML
Toronto, ON
Orchestrate close partnerships with clients and cross-functional agency leadership (Creative, Technology, Data, Account) to architect solutions that drive measurable business impact and…
Added 1 month ago
Director, CX Strategy
VML Canada (English)
Toronto, ON
Orchestrate close partnerships with clients and cross-functional agency leadership (Creative, Technology, Data, Account) to architect solutions that drive measurable business impact and…
Added 1 month ago
Graduate Intern Architect
GHD Group Pty Ltd
Toronto, ON
If you're interested in participating in our Hiring Day and being considered for a Graduate Intern Architect role, we encourage you to review the job description below and apply if it…
Added 1 month ago
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Oracle Cloud PPM Delivery Architect
Argano
Toronto, ON · Greater Toronto Area, Canada
- Full-time
Oracle Cloud Project Portfolio Management Delivery Architect
Added 1 month ago
TA
Sr. Manager/AD - Retail Business Consultant -Supply Chain Analytics (CPG/Retail)
Tiger Analytics Inc.
Remote, Canada
- Full-time
- Remote
Architect and design scalable data analytics frameworks and solutions

Stay22

Senior Fullstack Developer

Montreal, QC, Canada

Apply About employer

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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.

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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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