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Added 46 mins ago
CI
Designer de Produit / Product Designer (E-commerce)
Cloud Imperium Games Montreal
Montreal, QC
- Full-time
Founded in 2012 by renowned game developer Chris Roberts, Cloud Imperium Games (CIG) is one of the largest global independent studios, 1,000+ employees, dedicated to delivering…
Added 1 hour ago
IC
Frontend Developer
IT Connex
Toronto, ON
- Contract
Added 1 hour ago
directeur.trice de la conception de l’engagement des joueurs / Engagement Design Director
Electronic Arts
Vancouver, BC · Montreal, QC
Added 3 hours ago
OI
UI Programmer
Offworld industries
New Westminster, BC
- $85,000 to $100,000 CAD / year
- Full-time
Added 3 hours ago
EI
UX Designer
ExcelGens, Inc.
Bas-Saint-Laurent, QC
- Contract
Added 3 hours ago
Y
iOS Developer
Yochana
Mississauga, ON
- Contract
We are seeking a skilled iOS Developer with a strong background in Swift and SwiftUI to join our dynamic team. The ideal candidate will have hands on experience in mobile application…
Added 3 hours ago
RI
Senior Full-Stack Java Developer (Kafka/ Angular)
Rose International
Mississauga, ON
- Full-time
Seeking a Senior Full Stack Java Developer to join a technology team supporting applications and digital solutions within the Banking / Financial Services domain.
Added 3 hours ago
RI
Senior Software Development Engineer in Test (SDET)
Rose International
Mississauga, ON
- Full-time
AWS / GCP Cloud Architecture or Developer Certifications.
Added 3 hours ago
C
Web Developer
Cohere
Remote, Canada
- $180,000 to $250,000 CAD / year
- Full-time
- Remote
Added 3 hours ago
SI
ULUX Designer
Spait Infotech
Canada
- Full-time
Added 3 hours ago
K
Solutions Architect
Kelly
Toronto, ON
- Contract
Added 3 hours ago
D
Senior SDET / Quality Engineering Lead/Architect
Droisys
Brampton, ON
- Contract
Added 3 hours ago
SI
AI Product Owner
Supra ITS
Mississauga, ON
- Full-time
The no-code UI agent builder experience - what a non-developer can safely build, and what requires engineering
Added 4 hours ago
RI
IOS mobile testing
Raas Infotek
Vancouver, BC
- Contract
Added 4 hours ago
K
Javascript Developer
Kelly
Toronto, ON
- Contract
Job Title: Senior React / JavaScript Developer
Added 4 hours ago
K
Software Engineer in Test
Kelly
Mississauga, ON
- Contract
Added 4 hours ago
PC
Senior Software Development Engineer in Test (SDET) / Quality Engineering Architect
Pyramid Consulting, Inc
Mississauga, ON
- $70 to $79 CAD / hour
- Contract
Certifications such as Certified Software Test Architect, AWS/GCP Cloud Architecture, or Java SE Professional Developer Certification are advantageous.
Added 4 hours ago
D
React.js Engineer Toronto Canada/ Hybrid
Damcosoft
Toronto, ON
- Contract
Added 4 hours ago
T
Frontend React DEVELOPER || Canada
TestingXperts
Toronto, ON
- Contract
Experience profiling and optimizing frontend performance using browser developer tools.
Added 4 hours ago
AS
Backend Developer
Axelon Services Corporation
Montreal, QC
- $65.52 USD / hour
- Other
Added 4 hours ago
S
Software Engineer (Unpaid)
Spawn
Canada
- Temporary
Added 4 hours ago
AI
RPA UiPath Developer..
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Toronto, ON
- Full-time
We are seeking an experienced Senior RPA Developer with IT experience, including extensive hands-on expertise in Robotic Process Automation (RPA) using UiPath. The ideal candidate will be…
Added 5 hours ago
D
Software Engineer in Test
Dexian
Mississauga, ON
- Other
Added 5 hours ago
D
Software Engineer in Test
Dexian
Mississauga, ON
- Contract
Added 5 hours ago
MI
Director of Product
Method Integration Inc.
Remote, Canada
- Full-time
- Remote

TestingXperts

Frontend React DEVELOPER || Canada

Toronto, ON, Canada

Contract

Apply About employer

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Job details

Job type: Contract
Apply by: Nov 26, 2026
Posting language: English
Posted: Oct 27, 2026

Original job description

Job Title: Front-End (React) Lead Developer

Location :: Canada

Required Technical Skills

React.js and JavaScript

Strong hands-on experience with React.js, functional components, and React Hooks.
Excellent knowledge of JavaScript ES6+ and TypeScript.
Understanding of component lifecycle, reconciliation, rendering behavior, and React internals.
Experience building reusable components, custom hooks, and shared UI libraries.
Knowledge of routing using React Router or equivalent libraries.

State Management

Experience with Redux Toolkit, Redux, Context API, Zustand, or similar solutions.
Understanding of state normalization, asynchronous actions, and API data caching.
Experience managing complex application state and data flows.

UI Development

Strong knowledge of HTML5, CSS3, Flexbox, Grid, and responsive web design.
Experience with CSS Modules, Sass, Tailwind CSS, Material UI, or similar UI frameworks.
Understanding of accessibility standards, semantic HTML, and WCAG guidelines.
Ability to translate Figma or other design mockups into production-ready interfaces.

API Integration and Security

Experience integrating REST APIs and handling asynchronous requests.
Knowledge of HTTP, JSON, error handling, and API authentication.
Understanding of OAuth 2.0, OpenID Connect, and JWT-based authentication.
Awareness of frontend security risks such as XSS and CSRF.

Testing and Code Quality

Experience with Jest, React Testing Library, Vitest, or Cypress.
Knowledge of unit, integration, component, and end-to-end testing.
Experience with ESLint, Prettier, SonarQube, and code-quality standards.

Performance and Build Tools

Experience with Vite, Webpack, npm, or Yarn.
Knowledge of code splitting, lazy loading, memoization, and bundle analysis.
Experience profiling and optimizing frontend performance using browser developer tools.
Understanding of Core Web Vitals and browser rendering performance.

DevOps and Deployment

Experience with Git and pull-request workflows.
Knowledge of CI/CD pipelines using Jenkins, GitHub Actions, GitLab CI, or similar tools.
Exposure to Docker, cloud platforms, and frontend deployment environments.

Technical Leadership Responsibilities

Lead frontend architecture and make technical decisions aligned with business requirements.
Conduct design reviews, code reviews, and technical assessments.
Break down requirements into technical tasks and provide effort estimates.
Mentor team members and establish coding standards.
Identify technical debt and drive refactoring and modernization initiatives.
Coordinate with backend, QA, DevOps, and product teams to ensure successful delivery.
Take ownership of release quality, production stability, and frontend technical excellence.

Preferred Qualifications

Bachelor's or Master's degree in Computer Science, IT, or a related field.
Experience building enterprise-scale React applications.
Experience with Next.js, server-side rendering, or static site generation.
Knowledge of micro-frontends and frontend monorepo architecture.
Experience developing design systems and shared component libraries.
Exposure to GraphQL, WebSockets, and real-time applications.
Experience with Agile/Scrum methodologies and distributed development teams.

Key Deliverables

Scalable and maintainable frontend architecture.
High-quality, reusable React components.
Improved page load times and application responsiveness.
Strong test coverage and reduced production defects.
Consistent UI/UX and accessibility compliance.
Timely delivery of frontend releases.
Effective mentoring and technical leadership.

Core Skills

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More about this job

Responsibilities

Lead frontend architecture and technical decisions, review designs and code, estimate and break down work, and mentor team members. Coordinate with backend, QA, DevOps, and product teams to deliver reliable releases, improve performance and quality, and maintain frontend standards.

Requirements

Requires strong hands-on experience with React.js, JavaScript ES6+, TypeScript, state management, responsive UI development, API integration, testing, and frontend performance optimization. The role also calls for technical leadership, code review and mentoring experience; a bachelor's or master's degree in a related field and enterprise React experience are preferred.

Skills

React.js
JavaScript ES6+
TypeScript
Redux Toolkit
HTML5
CSS3
REST APIs
React Hooks
Responsive Design
Jest
React Testing Library
Vite
Webpack
Frontend Architecture
Performance Optimization
Technical Leadership

Visa sponsorship

Not detected in the job text

Keywords

React.js
JavaScript ES6+
TypeScript
React Hooks
Redux Toolkit
Redux
Context API
Zustand
HTML5
CSS3
Flexbox
CSS Grid
Responsive Web Design
REST APIs
OAuth 2.0
OpenID Connect
JWT
Jest
React Testing Library
Vitest
Cypress
Vite
Webpack
CI/CD
Docker
Next.js
Server-Side Rendering
Micro-Frontends
GraphQL
Agile/Scrum

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