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Senior Python Developer Jobs in Ontario (NOW HIRING)

StackandCo

Senior Python Developer

Galway, NY

\n \n \n \n \n Our client in the Banking \/ Finance industry, is looking for a Senior Python Developer who would like to join a forward thinking company on an initial 12 month contract with a strong ...

StackandCo

Python Developer

Galway, NY · On-site

\n \n \n \n \n Our client, an industry leading company, is looking for a talented Python Developer ... senior, there may be the opportunity to progress to Tech Lead. \n \n \n

StackandCo

\n \n \n \n \n Our client, an industry leading company, is looking for a talented Python Developer ... senior, there may be the opportunity to progress to Tech Lead. \n \n \n

Citi

Python Full Stack Developer - VP

Mississauga, ON · On-site

CA$170/hr

The Applications Development Technology Lead Analyst is a senior level position responsible for ... The overall objective of this role is to lead applications systems analysis and programming ...

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Senior Python Developer information

What are the main responsibilities of a senior Python developer?

A Senior Python Developer is responsible for designing, developing, and maintaining complex software applications using the Python programming language. They lead the technical aspects of projects, mentor junior developers, and ensure code quality through code reviews and best practices. Additionally, they collaborate with cross-functional teams to gather requirements, solve technical challenges, and deploy scalable and efficient solutions. Senior Python Developers are also expected to stay updated with the latest trends and advancements in Python and related technologies.

What are the key skills and qualifications needed to thrive as a senior Python developer?

To thrive as a Senior Python Developer, you need advanced proficiency in Python programming, experience with software architecture, and a solid understanding of algorithms and data structures, usually backed by a degree in computer science or related fields. Familiarity with frameworks like Django or Flask, version control systems such as Git, and containerization tools like Docker are typically required, alongside knowledge of modern CI/CD pipelines. Strong problem-solving abilities, effective communication, and leadership skills help you collaborate with teams and mentor junior developers. Mastery of these skills ensures the delivery of scalable, maintainable software solutions and the ability to drive technical excellence within development teams.

What are some common challenges faced by senior Python developers when leading a development team?

Senior Python Developers often encounter challenges such as balancing hands-on coding with mentoring junior team members and ensuring code quality across the team. They are also responsible for making architectural decisions, which requires staying updated on best practices and emerging Python frameworks. Additionally, coordinating collaboration between cross-functional teams (like DevOps, QA, and front-end developers) can be complex, especially in agile environments where requirements may shift rapidly. Overcoming these challenges helps foster a productive and innovative team culture.

What is the difference between Senior Python Developer vs Python Developer?

AspectSenior Python DeveloperPython Developer
Required ExperienceTypically 5+ years, with leadership and complex project experienceUsually 1-3 years, focusing on core Python skills
ResponsibilitiesDesigning architecture, mentoring, handling complex systemsWriting code, debugging, implementing features
CertificationsOptional but beneficial (e.g., Python certifications, cloud certs)Often not required
Work EnvironmentCollaborative teams, project planning, code reviewsDevelopment-focused, task-oriented

The main difference between a Senior Python Developer and a Python Developer lies in experience, responsibilities, and leadership. Senior developers handle complex projects, mentor others, and often participate in architecture decisions, while Python Developers focus on coding and feature implementation. Both roles are essential in tech companies, but the senior role requires more experience and broader skills.

Are senior Python developers still in demand?

Senior Python developers remain in high demand due to the language's versatility in web development, data analysis, machine learning, and automation. Companies seek experienced developers with skills in frameworks like Django or Flask, and proficiency in cloud platforms and APIs enhances job prospects.

How much does a senior Python developer make?

A senior Python developer typically earns between $100,000 and $150,000 annually, depending on experience, location, and industry. They often possess strong skills in frameworks like Django or Flask and may hold certifications or advanced degrees that influence salary levels.

What does a senior Python developer do?

A senior Python developer designs, develops, and maintains complex software applications using Python. They often lead projects, review code, optimize performance, and collaborate with cross-functional teams, requiring strong problem-solving skills and knowledge of frameworks like Django or Flask. Additionally, they may mentor junior developers and ensure code quality through testing and best practices.

What are the most commonly searched types of Python Developer jobs in Ontario?

The most popular types of Python Developer jobs in Ontario are:

What are popular job titles related to Senior Python Developer jobs in Ontario?

For Senior Python Developer jobs in Ontario, the most frequently searched job titles are:

What job categories do people searching Senior Python Developer jobs in Ontario look for?

The top searched job categories for Senior Python Developer jobs in Ontario are:

What cities in Ontario are hiring for Senior Python Developer jobs?

Cities in Ontario with the most Senior Python Developer job openings:

What are popular job titles related to Senior Python Developer jobs in ON?

For Senior Python Developer jobs in ON, the most frequently searched job titles are:

Senior Python Developer jobs near you
Infographic showing various Senior Python Developer job openings in Ontario as of August 2026, with employment types broken down into 1% Internship, 83% Full Time, 11% Part Time, and 5% Contract. Highlights an 79% Physical, 6% Hybrid, and 15% Remote job distribution.

Senior Python Developer

StackandCo

Galway, NY

Full-time

Re-posted 7 days ago

Job description

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\n Our client in the Banking \/ Finance industry, is looking for a Senior Python Developer who would like to join a forward thinking company on an initial 12 month contract with a strong likelihood to extend.<\/span>
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\n They are offering great projects, strong rates, and long term prospects.<\/span>
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\n Requirements<\/u><\/b>
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  • Commercial professional experience working at a senior or architect level in Python (experience with Java is also very beneficial)
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  • Coached and mentored developers on coding, performance and testing best practices
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  • Experience building web backends in Python
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  • Strong knowledge of database, including both SQL and NoSQL
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  • Experience building REST APIs and Microservice based architectures
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  • Experience with Docker, Amazon Web Services and Git
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  • Experience of Agile Software Development and CI\/CD pipelines
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  • A degree in Computer Science, Engineering or a related field or equivalent training\/experience
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    \n <\/div><\/span>
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