ZipRecruiter

Log In

1

Frontend Developer React Js Jobs in Toronto, ON (NOW HIRING)

Sitero LLC

Senior Software Engineer

Mississauga, ON · On-site +1

... Frontend React.js, TypeScript, HTML5, CSS3/SCSS, Redux / Zustand, Vite/Webpack Database PostgreSQL, MySQL, MongoDB, Redis - query optimization & schema design Cloud & DevOps AWS (EC2, S3, RDS, Lambda ...

Turner Fleischer

Software Developer

Toronto, ON · On-site +1

CA$65K - CA$80K/yr

Experience building modern, responsive user interfaces using React.js or another front-end ... DevOps, or equivalent. * Strong problem-solving, research, and communication skills, with the ...

Targeted Talent

Senior Java Developer

Toronto, ON · On-site +1

$91K - $120K/yr

Are you a Senior Java Developer who loves working with cutting-edge technologies and solving ... Work with React.js and Google App Engine with Python 2.7 to support the Front End team. What's in ...

Targeted Talent

Senior Java Developer

Toronto, ON · On-site +1

$91K - $120K/yr

Are you a Senior Java Developer who loves working with cutting-edge technologies and solving ... Work with React.js and Google App Engine with Python 2.7 to support the Front End team. What's in ...

Scotiabank

Senior Software Engineer

Toronto, ON · On-site

... front end technologies (React.js, JavaScript/TypeScript) * 5-7+ years of hands on experience in ... on experience with DevOps/CI/CD tooling such as Bitbucket, Jenkins, Sonar (or equivalent ...

Financeit

Senior Developer 1 - Front End

Toronto, ON · On-site

CA$120K - CA$130K/yr

We are looking for an experienced Senior Front-End Software Developer to help us craft scalable ... Experience in Ember.js or similar modern JavaScript frameworks * Extensive knowledge of web ...

Financeit

Senior Developer 1 - Front End

Toronto, ON · On-site +1

CA$120K - CA$130K/yr

We are looking for an experienced Senior Front-End Software Developer to help us craft scalable ... Experience in Ember.js or similar modern JavaScript frameworks * Extensive knowledge of web ...

Forma.ai

Staff Frontend Engineer

Toronto, ON · On-site

Improve frontend performance, reliability, accessibility, testing strategy, and developer ... Deep experience building and scaling production web applications with React, TypeScript, and ...

previous page

Showing results 41-60

All JobsFrontend Developer React Js JobsFrontend Developer React Js Jobs in Toronto, ON

Frontend Developer React Js information

What does a frontend developer React JS do?

A Frontend Developer React Js specializes in building the user-facing parts of web applications using the React JavaScript library. They are responsible for designing and implementing interactive and responsive interfaces that users interact with directly in their browsers. Their work often involves translating UI/UX designs into functional code, optimizing application performance, and collaborating with backend developers to integrate APIs. React developers also use tools like Redux, TypeScript, and modern CSS frameworks to enhance functionality and maintainability.

What are the key skills and qualifications needed to thrive as a frontend developer React JS?

To thrive as a Frontend Developer specializing in React JS, you need a solid understanding of JavaScript, HTML, CSS, and experience with React and modern frontend frameworks, often supported by a relevant degree or coding bootcamp. Familiarity with tools like Git, npm, Webpack, and testing libraries, as well as experience with RESTful APIs, is typically required. Strong problem-solving skills, attention to detail, and effective communication help developers excel in collaborative and fast-paced environments. These skills ensure the delivery of efficient, user-friendly web interfaces and high-quality, maintainable code.

How does a frontend developer React JS typically collaborate with designers and backend developers?

As a Frontend Developer focused on React.js, you will work closely with UI/UX designers to translate design mockups into interactive, visually appealing interfaces. Collaboration with backend developers is also essential, as you'll integrate APIs and ensure data flows smoothly between the frontend and backend systems. Regular communication and participation in agile ceremonies like stand-ups and sprint planning help align goals, clarify requirements, and resolve any technical challenges promptly. This collaborative environment fosters a shared responsibility for delivering seamless, user-friendly applications.

What is the difference between Frontend Developer React Js vs Frontend Developer Angular?

AspectFrontend Developer React JsFrontend Developer Angular
Required SkillsJavaScript, React, HTML, CSSJavaScript, TypeScript, Angular, HTML, CSS
Work EnvironmentWeb development teams, startups, tech companiesWeb development teams, enterprise applications, tech companies
CertificationsReact certifications, JavaScript coursesAngular certifications, TypeScript courses
Industry UsagePopular in startups and small to medium projectsCommon in large-scale enterprise applications

Both roles focus on frontend development but differ mainly in frameworks used. React Js developers typically work with JavaScript and React, suitable for flexible, fast web apps. Angular developers use TypeScript and Angular, often for complex, enterprise-level projects. The choice depends on project requirements and employer preferences.

What are popular job titles related to Frontend Developer React Js jobs in Toronto, ON?

For Frontend Developer React Js jobs in Toronto, ON, the most frequently searched job titles are:

What job categories do people searching Frontend Developer React Js jobs in Toronto, ON look for?

The top searched job categories for Frontend Developer React Js jobs in Toronto, ON are:

Frontend Developer React Js jobs near you
Infographic showing various Frontend Developer React Js job openings in Toronto, ON as of August 2026, with employment types broken down into 86% Full Time, 4% Part Time, and 10% Contract. Highlights an 80% Physical, 7% Hybrid, and 13% Remote job distribution.

Full-Stack Engineer (Contract - Part-Time)

mello

Toronto, ON • On-site, Remote

$100K - $150K/yr

Contractor

Re-posted 10 days ago

Key responsibilities

  • Develop, improve, and fix custom API backend as required.

  • Implement and maintain front end UI elements and experiences using frameworks like React.js or Vue.js.

  • Ensure the application can scale from 1,000 to a million users and contribute to defining engineering processes and deployment cadence.

Job description

About Us

mello is a Y Combinator (S21) backed start-up that integrates wellbeing into every employees' workflow in order to unlock their full potential. We are paving the path for the future of work. Our vision is to help every remote team on the planet to work healthier, more sustainably, and learn how to stay mello instead of burning out.

As second time founders, we burnt out building our last company during the pandemic. We wanted a simple, easy-to-use solution that integrates right into our workflow to increase our wellbeing but couldn't find anything on the market so we decided to build the solution we would've liked to use ourselves (aka, eating your own dog food).

At mello, we're building the new standard that remote and hybrid companies use to track, measure and act on burnout to inspire happier, healthier, more motivated teams. mello suggests smart actions for both employees, managers as well as HR to take to increase wellbeing, productivity and retention.

About this Role

As a modern Full-Stack Engineer, you are well versed in all aspects of development from a transistor to a website, including the browser, OS, CPU, RAM, architecture and everything. Here in mello we are much, mello-er, in requirements:

  • You will be responsible for both front end UI elements and experiences, as well as integrating, and maintaining / modifying backend services as required. The split is expected to be 63.5 / 37.5[1]
  • You will ensure the app can scale from 1000 to a million users
  • You will contribute and define our engineering values, process, and deployment cacadence, with scalability and security in mind.

Technical Skills you have:

  • IAM / OAuth (e.g. AWS Cognito, Okta)
  • Frontend frameworks i.e. React.js (Hooks preferred), Vue.js
  • In-depth CSS knowledge i.e. SCSS, Sass
  • 3rd party integrations experience with OAuth, SDK (i.e. AWS SDK), and API backend (BFF)
  • Develop, improve, and fix custom API backend as required
  • SPA Cloud deployment i.e. AWS S3 / Amplify, Netlify, Firebase a plus
  • Experience with Database ORB a plus

What you'll be doing

  • Experience with modern Front end frameworks e.g. React.js (Hooks), Vue.js and Gatsby. Familiarity with analytics is a plus.
  • Experience with OAuth flows and implementation / integration with 3rd party service
  • Experience with Front end deployment services e.g. AWS Amplify, Netlify, firebase
  • Experience with different data fetching / caching strategy and design tradeoffs, principles, and practices to help guide the team's technical direction
  • Experience with Test Driven Development and proficiency with a testing framework e.g. Jest
  • Experience with API integration as well as development. No stranger when comes to resolving CORS related nonsense
  • Experience with Database is a plus.
  • A strong desire to build secure software and protect user information.

Who you are

  • You are excited about our mission: unlocking human potential via wellbeing and the Future of Work
  • You are excited about joining a early-stage growth start-up
  • You have a growth-mindset
  • You don't mind learning a bit of everything outside engineering
  • You deeply care about UX/Design and won't compromise on quality
  • You ask "yes, and?" and are extremely collaborative
  • You're curious about how our UX Designers/Researchers conduct their work and how your work flows into theirs
  • You're proactive, a problem solver and go-getter
  • You're collaborative and are a team player
  • You're curious and self-motivated
  • You knows how to take and give direction
  • You can adapt to change quickly

Job Type: Contract (Part-Time)

Number of Hours: Up to 30hrs/week

Pay (USD): $100k - $150k

Education:

  • Bachelor's in Computer Science (Preferred)

Experience:

  • Full Stack Development: 2 years (Required)
  • DevOps: 1 years (Preferred)
Employment Type: CONTRACTOR

Apply