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Senior Software Engineer Jobs in Ontario (NOW HIRING)

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The Senior Software Engineer will play a pivotal role in driving impactful solutions for intricate business challenges within a dynamic and high-energy delivery setting, Responsibilities

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Rubicon Path

Shape the future of API integration as a Senior Software Engineer focusing on API development. This role demands technical acumen and expertise in enterprise-level software solutions. As a Senior ...

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Kaseya Careers

Senior Software Engineer

Toronto, ON · On-site

CA$140K - CA$220K/yr

Senior Software Engineer, Platform Engineering (Backend, Data & AI) Location: Toronto, ON Work Model: Toronto-based; candidates must be local to Toronto or willing to relocate Why Kaseya? Join a fast ...

Curinos Inc

Senior Software Engineer

Toronto, ON · On-site

CA$130K - CA$140K/yr

Are you a passionate Senior Software Engineer looking to make a significant impact in the fintech space? Join Curinos, where you will play a pivotal role in shaping the future of B2B SaaS ...

Ritchie Bros.

Senior Software Engineer

Mississauga, ON · On-site

We are looking for an enthusiastic and motivated Senior Software Engineer to join our marketplace teams. This is an excellent opportunity for someone early in their career who is eager to learn and ...

Clockwork.io

CA$140K - CA$210K/yr

We are currently seeking senior software engineers who will design the next generation of network acceleration software. Stay a nanosecond ahead of everyone else by joining our team of engineers in ...

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 ...

RenaissanceRe

Senior Software Engineer

Waterloo, ON · On-site

Senior Software Engineer Job Summary: An experienced and strategic Senior Software Engineer to lead complex technical initiatives, mentor team members, and drive architectural and operational ...

Voices

Senior Software Engineer

London, ON · Hybrid

Senior Software Engineer Location: Ontario (Hybrid - See "Hybrid Work Details" section below for more information) Position Type: Full-Time Vacancy Status: This posting is for an existing vacancy.

AutoTrader.ca

Senior Software Engineer

Toronto, ON · Remote

As a Senior Software Engineer, you will play a key technical leadership role within the AutoSync engineering organization. you will design, build, and evolve scalable backend services and user-facing ...

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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 3, 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 July 2026, with employment types broken down into 97% Full Time, 1% Part Time, and 2% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $123,836 per year, or $59.5 per hour.

Senior Software Engineer

Source Code

On-site

Full-time

This job post has expired today. Applications are no longer accepted.

Job description

Our client, a leading financial services organization, is seeking a Senior Software Engineer to join their team. The Senior Software Engineer will play a pivotal role in driving impactful solutions for intricate business challenges within a dynamic and high-energy delivery setting,

Responsibilities
  • Participate in cross-departmental technical design sessions to identify/document technical solutions
  • Collaborate with other engineers to share best practices and knowledge of emerging technologies.
  • Function as a trusted advisor with a consultative mindset in interactions with stakeholders.
  • Ensure the quality of the applications by using various types of automated testing methods in a continuous integration environment
  • Resolve defects/bugs during pre-production, production, and post-release patches
  • Drive continual improvement to the efficiency and flexibility of the systems while keeping a high bar for customer trust, performance, and availability
Need to Have
  • Post-secondary degree in computer science, software engineering or related discipline
  • 5+ years of professional software development experience
  • Deep expertise with microservices architectures and design patterns
  • Experience using tools including Lambda, DynamoDB, API Gateway, IAM, etc.
  • Proficient with debugging and profiling distributed systems
  • Agile and test-driven development mindset
  • Strong problem-solving skills and a passion for learning and staying updated with emerging technologies
  • Excellent communication and teamwork skills
  • Ability to work in a fast-paced and collaborative environment
Nice to Have
  • Exposure to Server-less development/deployment and containerization a definite plus
  • Experience with Azure Functions or AWS Lambdas within microservice architecture
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