Senior Fullstack Developer (Ruby & React), Core Payments

Fullscript; Toronto; Remote; CAD 80,000 - 100,000; Full time

Job summary

A healthcare technology company in Toronto is seeking a Senior Fullstack Developer to build a platform that enhances patient care. You will work with Ruby on Rails and JavaScript frameworks like React to create stable experiences for users. The company offers generous PTO, competitive pay, and a flexible work environment. If you are passionate and eager to grow, apply now.

Benefits

Generous PTO

Competitive pay

Flexible benefits package

Training budget

Discount on products

Ability to work Wherever You Work Well

Qualifications

• Passionate software engineer excited to learn and lead projects.
• Experience with Ruby or Ruby on Rails.
• Experience working with JavaScript or JS frameworks.
• Understanding of CSS frameworks and preprocessors.
• Desire to learn and openness to feedback.

Responsibilities

• Build, ship, test, deploy, and maintain checkout iterations.
• Build scalable frontend & backend applications.
• Review pull requests and mentor junior engineers.
• Scope and plan projects with other developers.

Skills

Ownership

Ruby or Ruby on Rails

JavaScript or JS frameworks (React, Vue, AngularJS)

CSS frameworks understanding

Writing tests

Understanding of design patterns and clean code

Mentoring junior engineers

Job description

At Fullscript, we’re not just changing healthcare—we’re making it whole.

We help 100,000+ healthcare practitioners support 10 million patients with a platform that delivers evidence-based health solutions, diagnostic support, and practitioner tools—all in one place.

Healthcare today is disconnected. We’re fixing that. Fullscript makes it easier for practitioners to treat the whole person, not just symptoms, so patients get the support they need—when they need it.

We’re building a better way—one where healthcare is connected, complete, and built for impact.

We are currently looking for experienced Senior Fullstack Developer who want to build a platform to create rich, stable, and compelling experiences for our users. Fullscript is written with Ruby on Rails, and our Ruby Engineers build and maintain our internal GraphQL API. They work directly with our front-end engineers to build out functionality on the Fullscript platform. On the front end, we’re using React, TypeScript, and Apollo to create top-notch experiences for our users.

Our team cares about doing things well, and about the developer experience on the team. We host in-house training on all sorts of topics, from React all the way through to Kubernetes. Fullscript is a place where you’ll be encouraged to learn, mentor, and grow.

This is how we like building software: https://fullscript.com/developer-handbook. If you share our values, we’d be excited to talk with you!

On the Core team, you will work with the financials, contributing to projects related to payments, checkouts, or our e-commerce engine.

What you'll do

• Take ownership and responsibility for building, shipping, testing, deploying, and maintaining checkout iterations & implementing business logic our e-commerce platform core
• Build scalable frontend & backend applications to support the growing needs of the business
• Review pull requests, mentor, and be an advocate for high-quality code that makes future development faster, easier, and better.
• Scope, plan projects, and work with other developers (front-end and back) to implement them
• Give input on high-level architecture decisions and communicate those decisions
• Solve performance issues within our checkout and payment systems
• Other duties determined by the company from time to time

What you bring to the table

• You are a passionate software engineer who cares about your craft. You are excited to learn, and lead projects and want to produce the best work possible
• Experience with Ruby or Ruby on Rails
• Experience working with Javascript or JS frameworks (React, Vue, AngularJS, Next or similar)
• Understanding of CSS frameworks like Bootstrap, as well as CSS preprocessors
• You write tests and understand their value
• You have a desire to learn and are open to feedback
• Understanding of design patterns and clean code
• Experience mentoring or coaching junior engineers

Bonus if you have

• Experience scaling or working on high-scale web applications
• Past experience working in e-commerce or health-tech sector
• Worked with Stripe or other payment providers
• Experience with React and GraphQL or similar technology

What we can offer you

• Generous PTO and competitive pay
• Fullscript’s RRSP match program for financial health
• Flexible benefits package and workplace wellness program
• Training budget and company-wide learning initiatives
• Discount on Fullscript catalog of products
• Ability to work Wherever You Work Well*

Why Fullscript?

Great work happens when people are supported, challenged, and inspired. Here, you’ll be part of a team that:

⬦ Values innovation—we push boundaries and always look for better ways.

⬦ Supports growth—through learning, mentorship, and meaningful work.

⬦ Cares about balance—with flexible work options and time off when you need it.

Apply now—let’s build the future of healthcare, together.

Fullscript is an equal-opportunity employer committed to creating an inclusive workplace. Accommodations are available upon request—email [e-mail] for support.

Before joining the team, all candidates who receive and accept an offer will complete a background check.

We use AI tools to support parts of our hiring process, like screening and reviewing responses. Final decisions are always made by people. This process complies with privacy and employment laws across Canada and the U.S.

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MORE INFO: www.fullscript.com | www.rupahealth.com | Follow us on social media @fullscriptHQ

IN THE NEWS: Fullscript acquires Rupa Health

Let’s make healthcare whole