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Senior Software Development Engineer Jobs in Ontario

Dialpad

Sr. SDET

Kitchener, ON · On-site

Your role As a Senior Software Developer in Test (SDET) in the Contact Center QA team, you're both a skilled developer who builds elegant, scalable test frameworks and a quality advocate who leads a ...

Dialpad

Sr. SDET

Kitchener, ON · On-site

Your role As a Senior Software Developer in Test (SDET) in the Contact Center QA team, you're both a skilled developer who builds elegant, scalable test frameworks and a quality advocate who leads a ...

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Senior Software Development Engineer information

What is a senior software development engineer?

Senior Software Development Engineers are experienced professionals who design, develop, and maintain complex software systems. They often lead technical projects, mentor junior developers, and ensure software quality and best practices within a team. Their responsibilities include writing code, conducting code reviews, collaborating with cross-functional teams, and solving challenging technical problems. Senior Software Development Engineers typically have several years of industry experience and a deep understanding of software engineering principles.

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

To thrive as a Senior Software Development Engineer, you need deep expertise in software engineering principles, advanced programming skills in languages such as Java, Python, or C++, and a bachelor's or higher degree in computer science or a related field. Familiarity with version control systems like Git, cloud platforms such as AWS or Azure, and experience with CI/CD pipelines are typically required, and certifications in these technologies can be advantageous. Strong problem-solving, leadership, and communication skills help you mentor junior engineers and collaborate effectively across teams. These competencies are critical for delivering robust solutions, driving technical innovation, and ensuring project success in complex engineering environments.

What are some common challenges senior software development engineers face when leading cross-functional projects?

Senior Software Development Engineers often encounter challenges such as aligning priorities across diverse teams, managing technical debt while delivering new features, and ensuring effective communication among stakeholders. Balancing hands-on coding with mentorship responsibilities and architectural decision-making can also be demanding. Success in this role typically requires strong interpersonal skills, proactive problem-solving, and the ability to adapt to shifting project requirements while maintaining high code quality.

What is the difference between Senior Software Development Engineer vs Software Development Engineer?

AspectSenior Software Development EngineerSoftware Development Engineer
ExperienceTypically 5+ years, with leadership responsibilitiesEntry to mid-level, 1-3 years of experience
ResponsibilitiesDesigning complex systems, mentoring juniors, leading projectsImplementing features, fixing bugs, collaborating on code
Skills & CertificationsProficiency in multiple programming languages, system design, often with certificationsStrong coding skills, foundational knowledge, less emphasis on certifications
Work EnvironmentOften leads teams, involved in architecture decisionsFocused on individual contributions, team collaboration

The main difference between a Senior Software Development Engineer and a Software Development Engineer lies in experience, responsibilities, and leadership. Seniors typically lead projects and mentor others, while juniors focus on coding and task completion. Both roles are vital in software development teams, with seniors bringing more strategic input and mentorship.

What are the most commonly searched types of Software Development Engineer jobs in Ontario?

The most popular types of Software Development Engineer jobs in Ontario are:

What cities in Ontario are hiring for Senior Software Development Engineer jobs?

Cities in Ontario with the most Senior Software Development Engineer job openings:

Infographic showing various Senior Software Development Engineer job openings in Ontario as of August 2026, with employment types broken down into 1% As Needed, 80% Full Time, 16% Part Time, and 3% Contract. Highlights an 86% Physical, 3% Hybrid, and 11% Remote job distribution.

Sr. Software Development Engineer in Test

Kitchener, ON • On-site

Dialpad
Telecommunications • 1 - 5K employees
Learn more about Dialpadexternal

Full-time

Re-posted 20 days ago

Job description

Your role
As a Sr. Software Developer in Test (SDET) in the Contact Center QA team, you're both a skilled developer who builds elegant, scalable test frameworks and a quality advocate who leads a team to optimal customer outcomes. You write the API, UI, capacity, security, and performance tests necessary to validate that features work as expected. You build the instrumentation that makes non-deterministic AI behavior testable in the first place. Most importantly, you own product and feature quality end-to-end, keeping communications flawless for the banks, hospitals, veterinarians, and other businesses that trust Dialpad with every conversation.

What you'll do

  • Plan and implement functional, regression, and end-to-end tests at the UI, API, and database levels.
  • Develop, execute, and analyze test runs for the capacity of microservices and performance of key product scenarios.
  • Own the test strategy for Dialpad's latest AI Contact Center systems, such as AI Routing, Digital Agent workflows, and Agentic Analytics.
  • Leverage agentic coding tools to generate test cases and build test software.
  • Provide detailed failure analysis to facilitate speedy product and test fixes.
  • Define the KPIs that matter and communicate results across teams and business stakeholders.
  • Participate in design discussions and reviews, addressing edge cases and inserting test hooks before development even begins.
  • Write reliable, maintainable code and find creative, scalable solutions to hard problems.
  • Mentor other engineers while staying on top of test and software development best practices.

What you'll bring

  • Relevant software development experience (typically 6+ years), preferably including building test automation frameworks for SaaS applications.
  • Strong programming expertise in any top language, such as Python or Java.
  • Strong experience designing and building scalable test automation frameworks.
  • Extensive use of AI coding agents for test generation and optimization.
  • Polished written and verbal communication skills in English.
  • Comfortable communicating cross-functionally and with teams in different geographies.
  • Prior experience applying different testing methodologies, including functional, integration, load, and performance testing.
  • Deep familiarity with cloud technologies, including the testing of REST services.
  • Experience injecting tests in CI pipelines.
  • Proficiency in AI-driven evaluation methodologies, eval harnesses for non-deterministic systems, or validating enterprise-scale data infrastructure is helpful.

Apply