Senior Developer, Backend - Developer Infrastructure

RXinsider LTD.; Toronto; Hybrid; CAD 125,000 - 165,000; Full time

Benefits offered by this job

Generous PTO

RRSP match

Flexible benefits

Training budget

Product discount

Work Anywhere

Job summary

Fullscript in Toronto, Ontario, is hiring a Senior Backend Engineer to own the long-term health and scalability of our core application. You will design solutions with other teams, plan release strategies, and lead foundational upgrades across the stack.

We value robust testing, clean architecture, mentorship, and collaboration. Enjoy generous PTO, flexible benefits, and the ability to work Anywhere You Work Well, with total rewards designed to support your growth.

Qualifications

• Strong experience with Ruby or Ruby on Rails.
• Designing maintainable systems and pragmatic tradeoffs.
• Strong testing habits and collaboration across teams.

Responsibilities

• Own and improve the long-term health of the monorepo.
• Plan solution designs and release strategies with engineering teams.
• Lead foundational upgrades across the stack.
• Improve code quality, structure, and standards.
• Address scalability, reliability, and performance.
• Resolve security vulnerabilities across the app and dependencies.
• Build and maintain shared tooling, CI linting, and QoL improvements.
• Maintain shared infrastructure like feature flags and end-to-end tests.
• Support product teams by solving cross-cutting technical issues.
• Act as a multiplier by unblocking other teams.
• Contribute through code, reviews, guidance, mentorship, and docs.

Skills

Ruby on Rails

Job description

About Fullscript

We’re an industry-leading health technology company on a mission to help people get better. We started in 2011 with one simple idea. Make it easier for practitioners to access the products they trust so they can deliver better care.

That simple idea grew into a platform that powers every part of care. Today, more than 125,000 practitioners use Fullscript for clinical insights, lab interpretations, patient analytics, education, and access to high-quality supplements. Over 10 million patients rely on Fullscript to stay connected to their care plans and follow through on treatment.

We build tools that make care smarter and more human. Tools that save time, simplify decisions, and help practitioners stay closely connected to the people they care for. When everything they need is in one place, they can focus on what matters most: helping people get better.

This is your invitation.

Bring your ideas, your grit, and your care for people.

Join us and shape the future of care.

Fullscript is looking for an experienced Senior Backend Engineer to join the infrastructure team responsible for the long-term health, scalability, and developer experience of Fullscript’s core application.

Our team enables fast, reliable product development by defining and upholding engineering standards for quality, scalability, and maintainability. We take on foundational upgrades, cross-team technical work, and infrastructure projects that help product teams move quickly without compromising the stability of the platform.

Our team cares about doing things well. That means improving the systems developers work in every day, reducing friction, modernizing our stack, and making thoughtful technical decisions that support Fullscript’s long‑term growth.

What you'll do

• Own and improve the long-term technical health of our monorepo
• Plan out solution designs and release strategies in collaboration with other engineering teams and stakeholders
• Lead foundational upgrades across the stack
• Improve code quality, application structure, maintainability, and engineering standards
• Address scalability, reliability, and performance concerns as the product grows
• Resolve security vulnerabilities across the application and its dependencies
• Build and maintain shared developer tooling, CI linting, and quality-of-life improvements
• Maintain and evolve shared infrastructure such as feature flags, end-to-end tests, and infrastructure-as-code within the monolith
• Support product teams by solving cross-cutting technical issues
• Act as a multiplier by unblocking other teams and improving the systems they rely on
• Contribute through implementation, code review, technical guidance, mentorship, and documentation

What you bring to the table

• Strong experience with Ruby or Ruby on Rails
• You are a passionate software engineer who cares about your craft and serving other developers as your end users.
• You are excited to learn, lead projects and want to produce the best work possible.
• Experience designing maintainable systems and making pragmatic technical tradeoffs
• Strong testing habits and an understanding of how tests support long-term maintainability
• Comfort working on platform, infrastructure, tooling, or developer experience problems
• A desire to improve engineering standards across teams
• Strong communication skills and the ability to collaborate across engineering teams
• A willingness to learn, ask questions, and receive feedback

Bonus if you have

• Experience scaling or working on high-scale web applications
• Past experience working in e-commerce or health tech sector
• You’ve worked with React or GraphQL in the past
• Experience improving CI systems, test suites, feature flag systems, or developer tooling

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*

*Our Wherever You Work Well philosophy means Fullscript teammates get to pick their own office — whether that’s in‑office, at home, or a bit of both.

Compensation range

The salary range for this role is between $125,000 and $165,000 CAD. Fullscript shares salary ranges to support transparency and help candidates make informed decisions. The range shown reflects base salary only and does not include stock options, wellness stipends, or other benefits that are part of Fullscript’s total rewards package.

Final compensation depends on experience, skills, and location. We review pay regularly to stay aligned with market data and internal equity. Benefits and total rewards may vary by region.

Why Fullscript

Great work happens when people feel supported, trusted, and inspired. At Fullscript, we stay curious and keep finding smarter ways to make care better. We grow together, take on new challenges, and focus on impact. We put people first, work as a team, and leave egos at the door.

What to Know Before You Apply

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

All offers are contingent on successful background checks conducted in compliance with federal, state, and provincial laws.

We use AI tools to support parts of the hiring process, including screening and reviewing responses. Final hiring decisions are always made by people and follow all applicable privacy and employment laws in Canada and the U.S.