Senior Full Stack React Developer

Posted 11 Days Ago
2 Locations
In-Office
90K-140K Annually
Senior level
Fintech • Payments • Financial Services
The Role
Design and implement responsive, accessible single-page applications using React. Collaborate with designers, analysts, testers and peers across project phases. Participate in reviews, contribute to deliverables, suggest UI improvements, debug and optimize front-end code, and use AI tools to accelerate development and testing.
Summary Generated by Built In

You are as unique as your background, experience and point of view. Here, you’ll be encouraged, empowered and challenged to be your best self. You'll work with dynamic colleagues - experts in their fields - who are eager to share their knowledge with you. Your leaders will inspire and help you reach your potential and soar to new heights. Every day, you'll have new and exciting opportunities to make life brighter for our Clients - who are at the heart of everything we do. Discover how you can make a difference in the lives of individuals, families and communities around the world.

Job Description:

Role Summary

Join our Front-end Design and Development Practice in where you will be creating one of a kind User Interfaces and innovative digital experiences across several mediums.
Our leading edge and innovative team will lead the design & development of Creative front end solutions across various lines of business and when appropriate partner with 3rd parties to ensure we continue to be the Industry leaders from a UI perspective.

What Will You Do?

As a part of a development team, interface with system designers, business system analysts, application analysts and testing specialists to deliver high quality solutions
Participate in the development and take accountability for deliverables
Participate in various review processes – i.e. Business Requirements, Test plans, Design reviews etc. to gain understanding of the application and provide input into the deliverables
Contribute to projects from initiation through planning, requirements, construction to implementation and post-implementation reviews
Suggest improvements to existing code to make a better UI experience for our clients
What Do You Need to Succeed?

5+ years of Professional, hands-on frontend development experience
Proficiency with JavaScript/ES6, React.js, HTML, CSS/SCSS, Webpack, XML/JSON
Proficiency with Bootstrap or similar frameworks such as Foundation
Experience with web accessibility guidelines, accessibility tools, and assistive technologies
Proficiency with developer tools and debugging techniques
Expertise in developing responsive web design and testing across multiple browsers, devices and
platforms
Experience building single page applications
Keep up to date with trends and changes in the UI space

Proficient with AI tools like CoPilot to accelerate development steps, troubleshooting and unit test code coverage
Experience working with teams to analyze and contribute ideas to production discussions, designs and decisions

Nice to Have

Experience with Design Systems (Storybook.js etc)
Experience with web development stacks including Parsley.js, AXIOS, react-bootstrap, React Context, Node.js etc.
Familiarity with Adobe Experience Manager
Experience working in an Agile development environment

What’s in it for you:

  • We’re honoured to be recognized as a 2026 Best Workplaces in Ontario by Great Place to Work® Canada.

  • We are thrilled to be recognized by Excellence Canada with their top-level certification, the Canada Order of Excellence for Mental Health at Work®,  for prioritizing employee well-being, fostering a positive work culture, and achieving excellence in mental health.

  • Wellness programs that support the three pillars of your health – mental, physical, and financial

  • The opportunity to move along a variety of career paths with amazing networking potential

The Base Pay range is for the primary location for which the job is posted. It may vary depending on the work location of the successful candidate or other factors. In addition to Base Pay, eligible Sun Life employees participate in various incentive plans, payment under which is discretionary and subject to individual and company performance. Certain sales focused roles have sales incentive plans based on individual or group sales results.  

Diversity and inclusion have always been at the core of our values at Sun Life. A diverse workforce with wide perspectives and creative ideas benefits our Clients, the communities where we operate and all of us as colleagues. We welcome applications from qualified individuals from all backgrounds.

Persons with disabilities who need accommodation in the application process, or those needing job postings in an alternative format, may e-mail a request to [email protected].

We are proud to be a hybrid organization that offers our employees the choice and flexibility to work from both the office and virtually based on the needs of the business, our Clients and you! Several work options are available and can be discussed throughout the selection process depending on the role requirements and individual needs.

We may use artificial intelligence to support candidate sourcing, screening, interview scheduling.

We thank all applicants for showing an interest in this position. Only those selected for an interview will be contacted.

Salary Range:

90,000/90 000 - 140,000/140 000

Job Category:

IT - Application Development

Posting End Date:

22/07/2026

Skills Required

  • 5+ years professional front-end development experience
  • Proficiency with JavaScript/ES6
  • Proficiency with React.js
  • Proficiency with HTML
  • Proficiency with CSS/SCSS
  • Experience with Webpack
  • Familiarity with XML and JSON
  • Proficiency with Bootstrap or similar frameworks (e.g., Foundation)
  • Experience with web accessibility guidelines, tools, and assistive technologies
  • Proficiency with developer tools and debugging techniques
  • Expertise in responsive web design and cross-browser/device testing
  • Experience building single page applications (SPAs)
  • Proficient with AI tools like GitHub Copilot to assist development and testing
  • Experience working collaboratively in teams to analyze and contribute to production designs and decisions
  • Experience with Design Systems (Storybook.js)
  • Experience with Parsley.js
  • Experience with AXIOS
  • Experience with react-bootstrap
  • Familiarity with React Context
  • Experience with Node.js
  • Familiarity with Adobe Experience Manager
  • Experience working in an Agile development environment
Am I A Good Fit?
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The Company
HQ: Toronto, Ontario
499 Employees

What We Do

A UK company, Sun Life Financial of Canada is focused on building excellent customer service by offering the highest levels of customer care. We have been serving customers in the UK for over 100 years

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