Senior Front-End Developer (React.js)

Apexon; Toronto; On-site; CAD 120,000 - 150,000; Full time

Job summary

Apexon is seeking a Senior Front-End Developer to design, develop, and maintain scalable React.js applications using TypeScript. You will build reusable UI components, integrate with REST APIs and microservices, and collaborate across product, design, and backend teams.

You will participate in code reviews, optimize performance, and work within Agile/Scrum ceremonies in a fast-paced environment. Expertise in HTML5, CSS3, and responsive design is essential.

Qualifications

• 7+ years of frontend development experience.
• Strong expertise in React.js and TypeScript.
• Experience integrating REST APIs.
• Experience working with Microservices Architecture.
• Hands-on experience with Git/GitHub.
• Experience working in Agile/Scrum environments.
• Strong understanding of HTML5, CSS3, responsive design, and frontend best practices.

Responsibilities

• Design, develop, and maintain scalable frontend applications using React.js and TypeScript.
• Build reusable UI components and responsive user interfaces.
• Integrate frontend applications with REST APIs and microservices.
• Collaborate with product managers, designers, backend engineers, and QA teams throughout the development lifecycle.
• Participate in code reviews and ensure high-quality, maintainable code.
• Work with CI/CD pipelines and version control systems.
• Troubleshoot, optimize, and enhance application performance.
• Participate in Agile ceremonies including sprint planning, stand-ups, and retrospectives.

Skills

React.js

TypeScript

Frontend development

REST APIs

Microservices

Git/GitHub

Agile/Scrum

HTML5

CSS3

Responsive design

Tools

GitHub Actions

Jenkins

Docker

Azure

AWS

CI/CD tooling

Job description

Hiring: Senior Front-End Developer (React.js)

Key Responsibilities

• Design, develop, and maintain scalable frontend applications using React.js and TypeScript.
• Build reusable UI components and responsive user interfaces.
• Integrate frontend applications with REST APIs and microservices.
• Collaborate with product managers, designers, backend engineers, and QA teams throughout the development lifecycle.
• Participate in code reviews and ensure high-quality, maintainable code.
• Work with CI/CD pipelines and version control systems.
• Troubleshoot, optimize, and enhance application performance.
• Participate in Agile ceremonies including sprint planning, stand-ups, and retrospectives.

Required Skills

• 7+ years of Frontend Development experience.
• Strong expertise in React.js and TypeScript.
• Experience integrating REST APIs.
• Experience working with Microservices Architecture.
• Hands-on experience with Git/GitHub.
• Experience working in Agile/Scrum environments.
• Strong understanding of HTML5, CSS3, responsive design, and frontend best practices.

Preferred Skills

• Experience with Next.js or Vue.js.
• Automated testing using Jest, Cypress, or Playwright.
• CI/CD tools such as Jenkins or GitHub Actions.
• Docker and cloud platforms (Azure/AWS).
• Banking, Financial Services, or Enterprise application experience.
• Experience building scalable, high-performance web applications.