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Added 9 hours ago
SM
RQ11739 – Software Developer – Full Stack – Senior
S M Software Solutions Inc
Toronto, ON
- Internship
We are seeking a Senior Software Developer – Full Stack with extensive experience designing and developing large-scale, multi-client web applications, Java-based enterprise solutions, REST…
Added 9 hours ago
SM
RQ11255 – Systems Testing/QA Specialist – Senior
S M Software Solutions Inc
Toronto, ON
- Full-time
We are seeking a Senior Systems Testing/QA Specialist with extensive experience in software quality assurance, commercial off-the-shelf (COTS) application testing, functional and…
Added 10 hours ago
CS
Senior Technical Architect, Application Development & Support
Canadian Standards Association
Toronto, ON
- Full-time
Headquartered in Canada, with a global footprint of more than 30 labs and offices across Europe, Asia and North America, CSA Group tests, inspects and certifies a wide range of products -…
Added 11 hours ago
I
Java Spring Boot Microservices Developer
Infosys
Mississauga, ON
- Full-time
Infosys is seeking a Java Springboot Microservices Angular Developer. This position will interface with key stakeholders and apply technical proficiency across different stages of the…
Added 12 hours ago
BF
(Junior) Data Engineer (12-Month Contract)
BC Financial Services Authority
Vancouver, BC
- $56,294 to $107,310 CAD / year
- Contract
Implement and support scalable ELT/ETL solutions, applying data quality controls, testing frameworks, monitoring, and validation processes to ensure data integrity, reliability, and…
Added 12 hours ago
PC
Cloud Infrastructure Engineer, Senior Associate
Pwc Canada
Ottawa, ON · Toronto, ON
- Full-time
Monitoring and Testing: Experience with performance/stress testing and monitoring tools.
Added 12 hours ago
MC
SysOps Software Architect (36136)
Myticas Consulting
Ottawa, ON
- Full-time
Work with DevOps, IT, Network Operations, and support teams on deployability, supportability, and maintainability.
Added 12 hours ago
MC
Senior Test Engineering Specialist (36135)
Myticas Consulting
Gatineau, QC
- Full-time
Collaborate with DevOps, Ground Systems, and Satellite teams to support innovative, coordinated verification activities.
Added 12 hours ago
BI Developer
Sunwing Vacations Group
Toronto, ON
…tour operators Sunwing Vacations and WestJet Vacations, along with the growing United States based tour operator Vacation Express, together with the Group’s own travel retail businesses…
Added 12 hours ago
Software Engineer
Questrade Financial Group
Calgary, AB
The Software Engineer is responsible for designing, building, testing, and deploying features across the full software development lifecycle, on the front end (React Native, ReactJS), the…
Added 13 hours ago
AI
Java Developer
Apptoza Inc.
Toronto, ON
- Contract
Collaborate with Business Analysts, Architects, QA, and DevOps teams
Added 13 hours ago
RI
Senior Full-Stack Java Developer (Kafka/ Angular)
Rose International
Mississauga, ON
- Full-time
The role requires strong hands-on experience with Java, Spring Boot, React, MongoDB, and OpenShift, along with a solid understanding of enterprise application development, APIs,…
Added 13 hours ago
RI
Senior Software Development Engineer in Test (SDET)
Rose International
Mississauga, ON
- Full-time
Performance Testing & Engineering: Solid hands-on background in JMeter, performance profiling, load injection architecture, and identifying system capacity limits.
Added 13 hours ago
T
Quality Assurance Automation Engineer
Tekshapers
Toronto, ON
- Contract
…addition to Continuous Integration tools (such as: Jenkins, Azure DevOps) Knowledge and experience with modern testing development practices and integrated testing products such as selenium…
Added 13 hours ago
ES
Java Developer
Epsilon Solutions Ltd.
Mississauga, ON
- Full-time
Collaborate with Business Analysts, Architects, QA, and DevOps teams
Added 13 hours ago
L
Senior Product Manager, Product Security
Litmus
Toronto, ON
- Full-time
Partner with Engineering, DevOps, and QA to integrate security into product design, development, testing, and releases.
Added 13 hours ago
O
Lead Quality Assurance Developer
OpenText
Waterloo, ON
- Full-time
Experience with load, stress, and Performance testing.
Added 13 hours ago
MT
DevOps & Security Engineer
Martello Technologies
ON · Kanata, Ontario
- Full-time
Help teams scale automated UI and regression testing (e.g. Playwright), so testing capacity grows with output.
Added 14 hours ago
FC
Senior DevSecOps Engineer
Fintel Connect
Vancouver, BC
- Full-time
A rapidly growing organization with real career progression and continuous learning
Added 14 hours ago
H
Bilingual Senior QA Analyst – Finance & Enterprise Performance Management (EPM)
Hays
Montreal, QC
- Contract
We are seeking an experienced a Senior Bilingual Quality Assurance Analyst with a strong background in Finance, Financial Planning & Analysis (FP&A), and Enterprise Performance Management…
Added 14 hours ago
T
Frontend React DEVELOPER || Canada
TestingXperts
Toronto, ON
- Contract
Experience with Jest, React Testing Library, Vitest, or Cypress.
Added 14 hours ago
SS
Java Developer
Staffmax Staffing & Recruiting
Mississauga, ON
- $120,000 to $130,000 CAD / year
- Full-time
We are looking for an experienced Java Developer to design, develop, and maintain scalable, high-performance microservices and REST APIs. The ideal candidate will have strong hands-on…
Added 14 hours ago
AI
SENIOR JAVA DEVELOPER – SPRING BOOT, MICROSERVICES, KAFKA & MONGODB
Astra-North Infoteck Inc. ~ Conquering today’s challenges, achieving tomorrow’s vision!
Mississauga, ON
- Full-time
Collaborate with Business Analysts, Architects, QA, and DevOps teams.
Added 15 hours ago
T
Software Engineer III
TD
Toronto, ON
- Full-time
As a candidate, you are encouraged to ask compensation related questions and have an open dialogue with your recruiter who can provide you more specific details for this role.
Added 15 hours ago
T
Software Engineer II
TD
Toronto, ON
- Full-time
Work with technology partners to define metrics, validate performance goals and address application or data issues affecting solution integrity.

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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