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Mobile Software Engineer Jobs in Toronto, ON (NOW HIRING)

Lead iOS Developer Job Responsibilities: * You will learn and adopt best practices like writing ... mobile-first culture. * You will oversee or take part in the entire cycle of software consulting ...

Enabling customers to view and edit their Personal Information directly in the Mobile App ... About the Role As a Senior Staff Engineer at Capital One Software Studio, you will orchestrate the ...

Enabling customers to view and edit their Personal Information directly in the Mobile App ... About the Role As a Senior Staff Engineer at Capital One Software Studio, you will orchestrate the ...

Enabling customers to view and edit their Personal Information directly in the Mobile App ... About the Role As a Senior Staff Engineer at Capital One Software Studio, you will orchestrate the ...

You'll join the Energy Software Engineering leadership team alongside five Engineering Managers ... Your fingerprints will be across the full stack: the mobile experiences that customers interact ...

The Role We're hiring a Senior Software Engineer to build and scale our platform. You'll work ... What You'll Do Build features across our Angular web platform, mobile apps (Ionic/Capacitor), and ...

Okta Verify is a mobile app that allows you to securely access your apps via 2-step verification ... c) The Staff Software Engineer in Test Opportunity We are looking for an experienced Software ...

The Okta Verify Team Okta Verify Team builds desktop and mobile applications for authentication and ... The Staff Software Engineer in Test Opportunity We seek a passionate and experienced C++ / Linux ...

The Role We're hiring a Senior Software Engineer to build and scale our platform. You'll work ... What You'll Do Build features across our Angular web platform, mobile apps (Ionic/Capacitor), and ...

The Mobile Controls Engineer will be a qualified engineer with a passion for supporting our ... Experience in software development using Parker IQAN, C, C++, or similar PLC/logic-based ...

Showing results 21-40

Mobile Software Engineer information

What are the key skills and qualifications needed to thrive as a mobile software engineer?

To thrive as a Mobile Software Engineer, you need proficiency in programming languages such as Swift, Kotlin, or Java, along with a solid understanding of mobile app development frameworks and a relevant degree in computer science or related field. Familiarity with integrated development environments (IDEs) like Xcode or Android Studio, version control systems like Git, and experience with APIs are typically required, with certifications in mobile development being a plus. Excellent problem-solving, adaptability, and strong communication skills help you work effectively in agile teams and deliver user-focused solutions. These skills ensure the development of robust, efficient, and user-friendly mobile applications that meet business and user needs.

What is the difference between Mobile Software Engineer vs Mobile App Developer?

AspectMobile Software EngineerMobile App Developer
CredentialsBachelor's in CS or related field, sometimes certifications in mobile developmentBachelor's in CS or related field, certifications vary
Work EnvironmentDesigning, developing, testing mobile applications across platformsBuilding and coding mobile applications, often focusing on specific platforms
Industry UsageUsed across tech companies, startups, and enterprises for mobile solutionsCommonly used in app-focused companies and freelance work
Search & Comparison IntentOften compared for roles involving mobile app development and system designCompared for roles focused on app creation and user interface design

Mobile Software Engineers and Mobile App Developers both work on mobile applications, but Engineers typically focus on system design, architecture, and cross-platform solutions, while Developers often concentrate on coding and UI/UX for specific platforms. The roles overlap significantly, but Engineers may handle broader technical responsibilities.

What is a mobile software engineer?

A Mobile Software Engineer is a professional who designs, develops, tests, and maintains software applications for mobile devices such as smartphones and tablets. They work with platforms like iOS and Android, using programming languages such as Swift, Kotlin, Java, or Flutter. Their responsibilities include building user-friendly interfaces, optimizing app performance, and ensuring compatibility across devices. Mobile Software Engineers collaborate with designers, product managers, and other engineers to create high-quality mobile experiences for users.

What are some common challenges faced by mobile software engineers when developing cross-platform applications?

Mobile Software Engineers often encounter challenges ensuring consistent functionality and user experience across different platforms, such as iOS and Android. Differences in device hardware, operating system behaviors, and screen sizes can lead to unexpected bugs or performance issues. Additionally, keeping up with frequent updates to SDKs and app store guidelines requires adaptability and proactive learning. Collaborating closely with designers and QA testers is essential to address these challenges and deliver high-quality apps.
What are the most commonly searched types of Software Engineer jobs in Toronto, ON? The most popular types of Software Engineer jobs in Toronto, ON are:
Infographic showing various Mobile Software Engineer job openings in Toronto, ON as of August 2026, with employment types broken down into 71% Full Time, 26% Part Time, and 3% Contract. Highlights an 88% Physical, 3% Hybrid, and 9% Remote job distribution.

Principal Software Development Engineer in Test

US Mobile

Toronto, ON โ€ข Remote

CA$140K - CA$180K/yr

Full-time

Medical

Re-posted 21 days ago


Job description

US Mobile is building the future of wireless communication. The goal: one unified network open to any person and any device, worldwide. Connection without walls.

We're getting there by empowering customers. All three major networks on one phone and one plan, plus home internet from Starlink. No lock-in. No commitments. Custom fit plans at every price point. 24/7 customer support with real people, empowered to help. We get real-time feedback from Reddit, surveys, and customer support informing product roadmaps and everything we do. It's working - Consumer Reports named us the top-rated mobile carrier two years in a row.*ย 

And we're building innovative systems that scale. A network agnostic tech stack. Agile, cross-functional teams built on trust and mutual respect. This work isn't for everyone. If you work fast, flexibly, and collaboratively - without compromising standards - we want to hear from you.

US Mobile is looking for a Principal-level SDET to own and elevate our quality engineering practice. This is a technical leadership role for someone who has built, scaled, and stabilized automated test platforms in modern microservices environments.
ย 
You'll lead by example, designing test strategy, improving CI pipelines, mentoring engineers, and ensuring quality is embedded across the SDLC.
Technical Leadership:
  • Own test architecture and automation strategy across backend and frontend systems.
  • Design, build, and maintain scalable automated test frameworks.
  • Lead end-to-end, API, integration, and UI automation.
  • Drive adoption of best-in-class testing practices
Hands-on Execution:
  • Build and maintain pipelines using Selenium, Playwright or Cypress. (Currently using Cypress)
  • API testing.
  • Improve test stability, performance, and execution time in CI/CD.
  • Actively debug flaky tests and CI failures
Platform & System Focus:
  • Test Java / Spring Boot microservices.
  • Validate async workflows (RabbitMQ).
  • Test data persistence layers (MongoDB).
  • Ensure quality in AWS-based distributed systems.
  • Partner with DevOps to improve pipelines and observability.
Mentorship & Influence:
  • Mentor Software Engineers on test design and automation.
  • Establish coding standards and review practices for test code.
  • Influence product and engineering leaders on quality risk and release readiness
Must Have:
  • 5+ years in Quality Engineering / Test Automation.
  • Senior or Staff-level experience in a product-driven org.
  • Deep expertise with Selenium, Playwright, Cypress.
  • Strong Java background (writing production-quality test code).
  • Experience testing microservices & distributed systemsCI/CD experience (GitHub Actions, Jenkins, GitLab, etc.).
  • Strong Linux fundamentals.
  • Proven ability to lead and influence.
Strong Plus:
  • Contract testing (Pact or similar).
  • Performance testing experience.
  • Cloud-native testing in AWS.
  • Observability-driven testing (logs, metrics, traces).
  • Prior experience building QA orgs from messy to mature
Benefits:
  • Competitive salary
  • Flexible working hours
  • Supplemental health insurance
  • Professional development stipend
  • $500 wfh tech set-up reimbursement
$140,000 - $180,000 a year
Think you could be a good fit?? Apply to learn more!!
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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