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Senior Software Engineer Jobs in Ontario (NOW HIRING)

Nasdaq

Senior Software Engineer

Toronto, ON · Hybrid

CA$121K - CA$170K/yr

As a Senior Software Engineer reporting to the Sr. Director of Software Development, you'll play a critical role in building the next generation of market data streaming products that empower clients ...

Micro1

Remote Senior Software Engineer

Guelph, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

North Bay, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Petawawa, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Vaughan, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Thunder Bay, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Ingersoll, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Quinte West, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Hamilton, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Etobicoke, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Collingwood, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Cobourg, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Angus, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Owen Sound, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Timmins, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Oshawa, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

Micro1

Remote Senior Software Engineer

Chatham, ON · Remote

Senior Software Engineer $50 - $100/hourpay Required Skills Python3 JAVA Rust Algorithms Basics C++ Typescript bug fixing feature implementation codebase refactoring performance optimization About ...

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All JobsSoftware Engineer JobsSenior Software Engineer JobsSenior Software Engineer Jobs in Ontario

Senior Software Engineer information

See Ontario salary details

$66.5K

$123.8K

$176.5K

How much do senior software engineer jobs pay per year?

As of Aug 11, 2026, the average yearly pay for senior software engineer in Ontario is $123,836.00, according to ZipRecruiter salary data. Most workers in this role earn between $103,000.00 and $140,000.00 per year, depending on experience, location, and employer.

What is a senior software engineer?

A senior software engineer designs, codes, tests, and maintains computer software. While these are your primary responsibilities as a senior software engineer, you may also have supervisory duties. These include overseeing a team of junior software engineers or developers. The senior software engineer title is sometimes used interchangeably with senior developer, and positions for both may share similar job duties and responsibilities. In general, software engineers are distinguished from developers in that software engineers apply engineering principles to software development.

What are some common challenges senior software engineers face when mentoring junior team members?

Senior Software Engineers often mentor junior colleagues, which can be incredibly rewarding but also presents challenges. Balancing mentorship with project deadlines can be demanding, as it requires strong time management and communication skills. Additionally, adapting explanations to different learning styles and levels of experience can be tricky. However, effective mentorship helps build a stronger team and can lead to enhanced leadership opportunities for the senior engineer.

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

AspectSenior Software EngineerSoftware Developer
CredentialsBachelor's or higher in CS or related field; experience often 5+ yearsBachelor's in CS or related field; entry to mid-level experience
Work EnvironmentDesigning complex systems, leading projects, mentoringWriting code, developing features, debugging
Industry UsageUsed across tech companies, startups, enterpriseCommon in software firms, startups, freelance work
Search & ComparisonOften compared for experience level, responsibilitiesCompared for entry-level to mid-level roles

The main difference between a Senior Software Engineer and a Software Developer lies in experience, responsibilities, and scope. Senior Software Engineers typically have more experience, lead projects, and mentor others, while Software Developers focus on coding and feature development. Both roles are essential in tech companies, but the Senior Software Engineer position involves higher-level planning and leadership.

What are the key skills and qualifications needed to thrive as a senior software engineer, and why are they important?

To thrive as a Senior Software Engineer, you need advanced programming skills, deep understanding of software architecture, and several years of experience in software development, often supported by a relevant degree. Familiarity with tools like Git, CI/CD pipelines, cloud platforms, and expertise in technologies such as Java, Python, or JavaScript are typically required. Leadership, problem-solving, and effective communication are crucial soft skills for mentoring teams and collaborating across departments. These skills ensure the delivery of robust, scalable solutions and drive successful project outcomes in complex technical environments.
More about Senior Software Engineer jobs
What are the most commonly searched types of Software Engineer jobs in Ontario? The most popular types of Software Engineer jobs in Ontario are:
What are popular job titles related to Senior Software Engineer jobs in Ontario? For Senior Software Engineer jobs in Ontario, the most frequently searched job titles are:
What job categories do people searching Senior Software Engineer jobs in Ontario look for? The top searched job categories for Senior Software Engineer jobs in Ontario are:
What cities in Ontario are hiring for Senior Software Engineer jobs? Cities in Ontario with the most Senior Software Engineer job openings:
What are popular job titles related to Senior Software Engineer jobs in ON? For Senior Software Engineer jobs in ON, the most frequently searched job titles are:
Senior Software Engineer jobs near you
Infographic showing various Senior Software Engineer job openings in Ontario as of August 2026, with employment types broken down into 1% Internship, 78% Full Time, 18% Part Time, and 3% Contract. Highlights an 87% Physical, 4% Hybrid, and 9% Remote job distribution, with an average salary of $123,836 per year, or $59.5 per hour.

Senior Software Engineer

Nasdaq

Toronto, ON • Hybrid

CA$121K - CA$170K/yr

Full-time

Re-posted 4 days ago

Job description

As a Senior Software Engineer reporting to the Sr. Director of Software Development, you'll play a critical role in building the next generation of market data streaming products that empower clients around the world to meet their data and trading needs.
You'll thrive in this position if you're a curious, independent thinker who is energized by complex technical challenges, collaborative by nature, and passionate about delivering high-quality software solutions at scale in a fast-paced, high-impact environment.
Key Responsibilities
  • Design, develop, and deliver scalable software solutions that power real-time data platforms for global markets.
  • Build and optimize APIs and data processing pipelines for high-volume, distributed, and multi-tenant systems.
  • Collaborate closely with engineering teams across Bangalore, Toronto, and other global locations to align on architecture and delivery.
  • Contribute to platform strategy by defining technical specifications and participating in early-stage product and platform decisions.
  • Stay ahead of technology trends and bring innovative thinking to the design and evolution of data streaming products.
Required Qualifications
  • Bachelor's degree in computer science, engineering, or a related technical field, or equivalent practical experience.
  • 10+ years of professional software engineering experience with a strong focus on Core Java.
  • Proven experience with cloud-native architectures, containerized applications, and distributed systems.
  • Demonstrated ability to build and deploy production-grade systems using microservices and container orchestration platforms.
  • Strong problem-solving and communication skills, with the ability to translate business requirements into technical solutions.
Preferred Qualifications
  • Hands-on experience with stream processing and event-driven technologies such as Apache Kafka or similar platforms.
  • Familiarity with parallel computing or stream processingframeworks.
  • Experience working in high-volume, low-latency, and highly available system environments.

This position will be located in Toronto, Canada, and offers the opportunity for a hybrid work environment at least 3 days a week in-office, subject to change, providing flexibility and accessibility for qualified candidates.

Come as You Are

Nasdaq is an equal opportunity employer. We welcome applications from candidates of all backgrounds and identities.

We are committed to fostering an inclusive workplace where diverse perspectives, experiences, and identities are valued and celebrated.

We ensure that individuals with disabilities are provided with reasonable accommodation throughout the hiring process.

What We Offer

We're proud to offer a competitive rewards package that is meaningful, recognizes the unique needs of our employees and their families and incentivizes employees for their contribution to Nasdaq's overall success.

The base pay range for this role is $121,000 - $170,000. In addition to base salary, Nasdaq provides a generous annual bonus/commission (short-term incentive), and equity (long-term incentive), comprehensive benefits, and opportunity for growth. Exact compensation may vary based on several job-related factors that are unique to each candidate, including but not limited to: skill set, experience, education/training, business needs and market demands.

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