Jobs in Canada

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Added 14 hours ago
CR
Senior Research Scientist - Bioanalysis
Charles River
QC
- $68,000 to $98,000 CAD / year
- On-site
Designing and executing laboratory experiments, including sample preparation, mass spectrometry analysis, and data interpretation;
Added 14 hours ago
CR
Pharmacokinetics Associate
Charles River
QC
- $75,000 CAD / year
- Hybrid
Perform data tabulation, conduct preliminary analyses, and generate summary results while demonstrating a strong understanding of PK processes and timelines;
Added 14 hours ago
CR
Animal Health Technician
Charles River
QC
- $23.75 CAD / hour
- On-site
Record study observations and data, including body weight, food consumption, and clinical signs.
Added 14 hours ago
A
Machine Learning Operations Developer, AI/ML Platform
Autodesk
Montréal, QC · Toronto, ON · ON
- $99,000 to $145,200 CAD / year
- Full-time
- Hybrid
Machine Learning Operations Developer, Inference, AI/ML Platform
Added 14 hours ago
A
Principal People Insights Partner
Autodesk
Toronto, ON · Vancouver, BC · Montréal, QC
- $113,000 to $165,000 CAD / year
- Full-time
- Hybrid
People Insights & Solution Design (PI-SD) builds the research, data, technology, and AI foundations that help Autodesk's People & Places (PPL) organization continuously evolve and create…
Added 14 hours ago
A
Senior Growth Analyst, Worldwide Marketing
Autodesk
Remote, Canada
- $79,000 to $115,500 CAD / year
- Full-time
…avec d’autres analystes, les équipes d’expérimentation, de science des données et d’autres partenaires interfonctionnels afin d’appliquer des pratiques de mesure cohérentes et d’utiliser…
Added 14 hours ago
AI
Principal Engineer, Efficient GenAI
AMD, Inc.
Markham, ON
- Full-time
At AMD, our mission is to build great products that accelerate next-generation computing experiences - from AI and data centers, to PCs, gaming and embedded systems. Grounded in a culture…
Added 14 hours ago
AI
Sr. Software Development Engineer (1-Year Contract)
AMD, Inc.
Markham, ON
- Temporary
At AMD, our mission is to build great products that accelerate next-generation computing experiences - from AI and data centers, to PCs, gaming and embedded systems. Grounded in a culture…
Added 14 hours ago
AI
Diagnostics Software/Hardware Technical Lead
AMD, Inc.
Markham, ON
- Full-time
At AMD, our mission is to build great products that accelerate next-generation computing experiences - from AI and data centers, to PCs, gaming and embedded systems. Grounded in a culture…
Added 14 hours ago
Operational Excellence, Quality & Sanitation Co-op (Winter 2027)
FGF
Toronto, ON
As an Operational Excellence Quality & Sanitation Co-op, you will provide support by performing data collections from day-to-day operational activities in the field as well as…
Added 14 hours ago
AI Solutions Engineer Co-op (Winter 2027)
FGF
Toronto, ON
Currently enrolled in Computer Science, Artificial Intelligence, Machine Learning, Data Science, or a related field
Added 14 hours ago
IT QA Mobile Testing Co-Op (Winter 2027)
FGF
Toronto, ON
…and developers on real features for mobile applications and data pipelines. In this role you can expect to learn test design techniques and practical risk-based testing, as well as mobile…
Added 14 hours ago
AI
Principal ASIC Design Engineer
AMD, Inc.
Markham, ON
- Full-time
…next-generation IP that enables AMD products across server, data center, client, and embedded markets. As a senior member of the team, you will help define and deliver innovative…
Added 14 hours ago
Embodied Carbon Service Group Director
Stok
Vancouver, BC
…International Living Future Institute (ILFI) Just Label, and the Science Based Targets initiative (SBTi) to guide, verify, and share our progress toward our commitment to a radically better…
Added 14 hours ago
Carbon Services, Embodied Carbon Analyst
Stok
Vancouver, BC
…International Living Future Institute (ILFI) Just Label, and the Science Based Targets initiative (SBTi) to guide, verify, and share our progress toward our commitment to a radically better…
Added 14 hours ago
AL
Platform Applications Engineer Intern/Co-op (Tools Development Engineer – COSMOS Platform Software)
Astera Labs Early Career - North America 2027
Vancouver, BC
- $35 to $55 CAD / hour
…telemetry, investigate issues, validate behavior, and improve developer…
Added 14 hours ago
AL
Firmware Engineer Intern Summer Co-op
Astera Labs Early Career - North America 2027
Vancouver, BC
- $45 to $55 CAD / hour
Inspired by trusted partnerships with hyperscalers and the data center ecosystem, we are an innovation leader of products that are flexible, interoperable, and reliable.
Added 14 hours ago
AL
Firmware Engineer Intern Spring Co-Op
Astera Labs Early Career - North America 2027
Vancouver, BC
- $45 to $55 CAD / hour
Inspired by trusted partnerships with hyperscalers and the data center ecosystem, we are an innovation leader of products that are flexible, interoperable, and reliable.
Added 14 hours ago
AL
Firmware Engineer Intern (Ottawa)
Astera Labs Early Career - North America 2027
Ottawa, ON
- $45 to $55 CAD / hour
…diagnostics, and real-time performance across products deployed in data centers…
Added 14 hours ago
AL
Firmware Engineer Intern Fall Co-op
Astera Labs Early Career - North America 2027
Vancouver, BC
- $45 to $55 CAD / hour
Inspired by trusted partnerships with hyperscalers and the data center ecosystem, we are an innovation leader of products that are flexible, interoperable, and reliable.
Added 14 hours ago
AL
DFT Engineering Intern
Astera Labs Early Career - North America 2027
Toronto, ON
- $35 to $55 CAD / hour
Coursework, projects, research, or hands-on experience in electrical engineering, computer engineering, computer science, or a related field.
Added 14 hours ago
Principal Software Engineer, Front End Web UI Platform
GitHub, Inc.
Canada
You're leading at least one platform-wide initiative that measurably improves performance, availability, frontend infrastructure, or developer velocity.
Added 14 hours ago
Staff Software Engineer, Front End Web UI Platform
GitHub, Inc.
Canada
You're leading at least one platform-wide initiative that measurably improves performance, availability, frontend infrastructure, or developer velocity.
Added 14 hours ago
Associate Director, Clinical Trial Management - Canada
Medpace, Inc.
Canada
Review and provide input for study protocol, edit check specifications, data analysis plan, and final study report, when applicable
Added 14 hours ago
Bilingual Clinical Research Associate (CRA) – Clinical Research Coordinator Experience
Medpace, Inc.
Canada
Review of patient charts and clinical research data.

GitHub, Inc.

Principal Software Engineer, Front End Web UI Platform

Canada

Apply on github.careers About employer

Applications open in a new tab.

Job details

Posting language: English
Posted: Aug 17, 2026

Original job description

About GitHub

GitHub is the world’s leading platform for agentic software development - powered by Copilot to build, scale, and deliver secure software. Over 180 million developers, including more than 90% of the Fortune 100 companies, use GitHub to collaborate, and more than 77,000 organisations have adopted GitHub Copilot.

Locations

In this role you can work from Remote, Canada

Overview

GitHub's Core UX organization owns the frontend platform behind GitHub.com: the architecture, tooling, and standards that let hundreds of engineers ship UI that is fast, accessible, consistent, and reliable. We're looking for a Principal Software Engineer to set technical direction across that platform and raise the ceiling on what the frontend can do for millions of developers.

This is a systems role, not a single-team role. You'll work across the concerns that overlap in frontend at scale: performance, accessibility, UX consistency, and availability. Much of the work is evolving a large, actively developed codebase rather than starting from scratch, so success depends as much on migration strategy and cross-team alignment as on architecture. You'll shape paved paths that many teams adopt, not one-off solutions that rely on heroics.

You'll partner closely with other Principal and Staff engineers, Engineering Managers, and Product and Design leadership to decide where the platform goes next and to drive that direction to real, shipped outcomes.

Responsibilities

Own the technical direction for GitHub's web UI platform across performance, accessibility, consistency, and availability, balancing long-term architecture with hands-on execution.
Drive large cross-team initiatives and migrations, sequencing the work so the platform moves forward without disrupting active product development.
Establish patterns, standards, and paved paths for frontend development that lower cognitive load and scale across many teams.
Produce architecture and design proposals, evaluate tradeoffs honestly, and build alignment across engineering, product, and design.
Mentor and raise the bar for engineers at every level through design review, code review, and pairing.
Represent frontend platform priorities to leadership, securing the support and resourcing needed to deliver.

What Success Looks Like in the First 6 Months

You've built a deep working understanding of GitHub's frontend systems, infrastructure, and their backend dependencies, and you're using it to make informed, high-leverage decisions.
You're leading at least one platform-wide initiative that measurably improves performance, availability, frontend infrastructure, or developer velocity.
Teams are adopting the patterns and paved paths you've shaped, with less need for direct hand-holding.

Qualifications

Required Qualifications

11+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR Associate's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 10+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR Bachelor's Degree in Computer Science or related field AND 9+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR Master's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 7+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR Doctorate in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 5+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR equivalent experience.

Preferred Qualifications

Deep knowledge of React or Angular internals and server-side rendering, with experience modernizing frontend systems in large, multi-team codebases.
Track record of improving web performance (Core Web Vitals, interaction latency, bundle size) through systematic, data-driven work.
Experience leading cross-team frontend migrations and rollouts, managing sequencing, deprecation, and incremental adoption across many engineers.
Strong command of web platform and accessibility fundamentals (browser APIs, a11y standards, TypeScript, JavaScript, CSS) and how they interact with framework-level abstractions.
Experience building design systems, shared component libraries, or paved-path tooling that many teams adopt.

GitHub values

Customer-obsessed
Ship to learn
Growth mindset
Own the outcome
Better together
Diverse and inclusive

Manager fundamentals

Model
Coach
Care

Leadership principles

Create clarity
Generate energy
Deliver success

Who We Are

GitHub is the world’s leading AI-powered developer platform with 150 million developers and counting. We’re also home to the biggest open-source community on earth (and 99% of the world’s software has open-source code in its DNA). Many of the apps and programs you use every day are built on GitHub.
Our teams are dreamers, doers, and pioneers, leading the way in AI, driving humanitarian efforts around the globe, and even sending open source to Mars (and beyond!). At GitHub, our goal is to create the space you need to do your best work. We’re remote-first and offer competitive pay, generous learning and growth opportunities, and excellent benefits to support you, wherever you are - because we know that people flourish when they can work on their own terms.
Join us, and let’s change the world, together.

Equal Employment Opportunity

GitHub is made up of people from a wide variety of backgrounds and lifestyles. We embrace diversity and invite applications from people of all walks of life. We don't discriminate against employees or applicants based on gender identity or expression, sexual orientation, race, religion, age, national origin, citizenship, disability, pregnancy status, veteran status, or any other differences. Also, if you have a disability, please let us know if there's any way we can make the interview process better for you; we're happy to accommodate!

Own the technical direction for GitHub's web UI platform across performance, accessibility, consistency, and availability, balancing long-term architecture with hands-on execution.
Drive large cross-team initiatives and migrations, sequencing the work so the platform moves forward without disrupting active product development.
Establish patterns, standards, and paved paths for frontend development that lower cognitive load and scale across many teams.
Produce architecture and design proposals, evaluate tradeoffs honestly, and build alignment across engineering, product, and design.
Mentor and raise the bar for engineers at every level through design review, code review, and pairing.
Represent frontend platform priorities to leadership, securing the support and resourcing needed to deliver.

What Success Looks Like in the First 6 Months

You've built a deep working understanding of GitHub's frontend systems, infrastructure, and their backend dependencies, and you're using it to make informed, high-leverage decisions.
You're leading at least one platform-wide initiative that measurably improves performance, availability, frontend infrastructure, or developer velocity.
Teams are adopting the patterns and paved paths you've shaped, with less need for direct hand-holding.

Required Qualifications

11+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR Associate's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 10+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR Bachelor's Degree in Computer Science or related field AND 9+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR Master's Degree in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 7+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR Doctorate in Computer Science, Electrical Engineering, Electronics Engineering, Math, Physics, Computer Engineering, Computer Science, or related field AND 5+ years experience in Software Engineering, Computer Science, or related technical discipline with proven experience maintaining and delivering production software coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Go, Ruby, Rust, or Python
- OR equivalent experience.

Preferred Qualifications

Deep knowledge of React or Angular internals and server-side rendering, with experience modernizing frontend systems in large, multi-team codebases.
Track record of improving web performance (Core Web Vitals, interaction latency, bundle size) through systematic, data-driven work.
Experience leading cross-team frontend migrations and rollouts, managing sequencing, deprecation, and incremental adoption across many engineers.
Strong command of web platform and accessibility fundamentals (browser APIs, a11y standards, TypeScript, JavaScript, CSS) and how they interact with framework-level abstractions.
Experience building design systems, shared component libraries, or paved-path tooling that many teams adopt.

Apply on github.careers About employer

More about this job

Responsibilities

The Principal Software Engineer at GitHub will set the technical direction for the frontend platform behind GitHub.com. They will lead large cross-team migrations, define standards that many teams adopt, and mentor engineers through design and code review.

Requirements

Candidates need 11+ years of software engineering experience shipping production code in languages such as JavaScript, Go, Ruby, Python or Java, or an equivalent combination of education and experience. Deep React or Angular knowledge, frontend performance work and cross-team migration experience are preferred.

Skills

JavaScript
TypeScript
React
Angular
Server-side rendering
CSS
Browser APIs
Web accessibility standards
Core Web Vitals
Web performance optimization
Bundle size optimization
Design systems
Shared component libraries
Frontend architecture
Cross-team migration planning
Technical leadership
Architecture proposals
Code review
Mentoring
Go
Ruby
Python
Java
Rust
C#

Benefits

Learning and growth opportunities
Excellent benefits

Keywords

Principal Software Engineer
Frontend
Front End Web UI Platform
React
Angular
Server-side rendering
TypeScript
JavaScript
CSS
Web performance
Core Web Vitals
Accessibility
a11y
Design systems
Micro-frontends
Migration
GitHub
GitHub Copilot
Remote Canada
Staff Engineer

Seniority

Lead

Tools

React
Angular
TypeScript
CSS

Languages

English

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Work requirements

Jobs in Canada