Remote Sr software engineer core backend & platform Jobs – 80 Openings This Week

QA Automation Engineer Co-op
Flexspring —Montréal, QC
- Full-time
- Remote
- Engineering
- Java
- JavaScript
Quick apply
Machine Learning Engineer, ML Systems and Infrastructure
Autodesk —Toronto, ON
- Full-time
- Remote
- Azure
- Computer Science
- CAD
Staff Backend Developer
Varicent —Toronto, ON
- $104,300–$130,000 a year
- Remote
- Azure
- Computer Science
- Engineering
Quick apply
6d
Senior Content Engineer
Platform.sh —Remote
- Remote
- DevOps
- English
- APIs
- Paid time off
Quick apply
Senior 3D & AI Systems Software Developer
CoLab Software —Toronto, ON
- Full-time
- Remote
- CAD
- Databases
- SQL
- Dental care
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Principle iOS Engineer
Constant Contact —Waterloo, ON
- $159,500–$191,400 a year
- Remote
- Software development
- APIs
- AI
- Paid time off
Quick apply
22h
Senior Solutions Architect
Remote Woman —Remote
- Remote
- DevOps
- Project management
- Scripting
- Paid time off
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Senior Solutions Architect
Platform.sh —Remote
- Remote
- DevOps
- Project management
- Scripting
- Paid time off
Quick apply
Senior AI Software Engineer
EPAM Systems, Inc. —Remote
- Remote
- Azure
- AWS
- Software development
1h

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QA Automation Engineer Co-op

Flexspring -
Montréal, QC

Quick apply

Job details

Full-time | Internship / Co-op

Qualifications

CI/CD
TestNG
JUnit
Engineering
Test automation
Selenium
Java
JavaScript
REST
Scripting
APIs
Spring framework

Full job description

Your Role

You'll write automation code that protects real customers. Not clicking through manual test scripts. Not busywork. Real engineering work. You'll own test suites that validate our entire platform. You'll think about what could break, design tests to catch it, and catch real bugs before they reach production. You'll work with experienced engineers who'll teach you how quality actually works at scale.

What You'll Actually Do

Write test code that matters: Build automated test suites in Java that validate our core platform - real tests that catch real bugs
Test like systems matter: Design tests around real failure scenarios - what happens when an API times out? When data gets corrupted? When systems go out of sync?
Work with real integrations: Validate how data flows between systems, ensure APIs work correctly, test the systems we build for real companies
Collaborate on quality: Work with developers to understand what's being built, suggest ways to make code more testable, participate in how we approach quality
Learn from engineers who care: Senior engineers will teach you how to think about quality, how to write test code that lasts, and why testing shapes better product design

What You'll Get

Real QA experience: Your tests protect a platform used by hundreds of companies. When you graduate, you'll have legitimate automation engineering experience.
Mentorship that actually helps: Senior engineers who'll invest time teaching you - not just code, but how to think about quality and systems
Competitive co-op pay: We pay fairly because we respect your time and contribution
Flexible, remote-first environment: Work from Montreal, home, or wherever. We trust you to get the work done.
Strong path to full-time: Many of our best full-time engineers started as interns here. If you're great, we want to keep you.

What We're Looking For

Currently studying Software Engineering, Computer Science, or a related field
Solid foundation in Java - doesn't matter if it's from school projects
Exposure to testing frameworks like JUnit, TestNG, or similar - school projects absolutely count
Comfortable with REST APIs
You naturally think about edge cases - you're the person who asks "but what if it breaks?"

We especially want to hear from you if: You've found a bug that seemed impossible, written a test that caught something real, or felt excited about validating a feature before it shipped. That's the mindset that succeeds here.

Nice to have (but don't let this stop you from applying):

Test automation framework experience (Selenium, RestAssured, similar)
Spring or backend Java experience
JavaScript or scripting skills
CI/CD pipeline knowledge
API or contract testing experience

About Flexspring

We're a remote-first team across Canada building the iPaaS platform that powers HR data integration. Our customers include mid-market to enterprise companies that depend on us to reliably move employee data. Why this matters for your growth: We actually care about quality. It's not a checkbox - it's part of how we build. Tests are code too, and they need to be written well. Your ideas about how to test better will be heard. We ship carefully because we ship to production. At Flexspring, interns aren't bystanders. You work on real quality infrastructure, get genuine mentorship, and many of our full-time engineers started exactly where you are.

Quick apply

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sr software engineer core backend & platform jobs in remote

QA Automation Engineer Co-op

Machine Learning Engineer, ML Systems and Infrastructure

Staff Backend Developer

Senior Content Engineer

Senior 3D & AI Systems Software Developer

Principle iOS Engineer

Senior Solutions Architect

Senior Solutions Architect

Senior AI Software Engineer

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