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Senior Python Developer Jobs in Mississauga, ON (NOW HIRING)

AssistIQ

Senior Software Developer

Toronto, ON · On-site

As a Senior Software Developer, you will be responsible for designing, developing and managing the ... JavaScript/TypeScript, Python or Go * Experience building CI/CD pipelines and applying automation ...

AssistIQ

Senior Software Developer

Toronto, ON · Remote

As a Senior Software Developer, you will be responsible for designing, developing and managing the ... JavaScript/TypeScript, Python or Go * Experience building CI/CD pipelines and applying automation ...

Cority Software

Sr. DevOps Engineer

Toronto, ON · On-site

To learn more, visit www.cority.com POSITION SUMMARY The Sr. DevOps Engineer will work ... Python, PowerShell, or similar scripting language * Extensive proven experience with AWS network ...

Pagefreezer

Senior Software Developer (Remote)

Toronto, ON · Remote

CA$110K - CA$145K/yr

What You'll Do as a Senior Software Developer * Design & Scale Robust Architecture: Develop and ... Python and supporting libraries, Angular. * Infrastructure: Cloud systems (AWS), ArgoCD , SNS, SQS ...

NTENT

Senior DevOps Engineer

Toronto, ON

Senior DevOps Engineer Position: Full time Location: Toronto, Ontario (Initially Remote) About Us ... Experience with programming and/or scripting languages (Python, Ruby, Bash, Go, Java, PowerShell)

Cority Software

Sr. Software Developer

Toronto, ON

Cority is looking for a Sr. Software Developer to be a part of our existing team. We are very ... Scripting with batch/powershell/python * Knowledge of Docker * Knowledge of AWS or similar CI/CD ...

Cority Software

Sr. Software Developer

Toronto, ON

Cority is looking for a Sr. Software Developer to be a part of our existing team. We are very ... Scripting with batch/powershell/python * Knowledge of Docker * Knowledge of AWS or similar CI/CD ...

JLL

Senior Data Engineer

Toronto, ON · Remote

Senior Data Engineer - JLL What this job involves: As a Senior Data Engineer at JLL, you will ... Expert Python programming skills including inheritance, reflection, meta-programming, and advanced ...

Scotiabank

Senior DevOps Engineer

Toronto, ON · On-site

The Role As a Senior DevOps Engineer on the GBM Data Platform, you will provide technical ... Proficiency in scripting and automation using Python, Bash/Shell, and/or Groovy. * Experience ...

Career Renew

Senior ML Engineer

Toronto, ON · Remote

$180K - $240K/yr

Career Renew is recruiting for one of its clients a Senior Machine Learning Engineer - this is a ... You're an applied AI engineer who thrives in startup environments, writes clean Python, and can ...

Career Renew

Senior ML Engineer

Toronto, ON · Remote

$180K - $240K/yr

Career Renew is recruiting for one of its clients a Senior Machine Learning Engineer - this is a ... You're an applied AI engineer who thrives in startup environments, writes clean Python, and can ...

ShyftLabs

Senior Backend Developer

Toronto, ON · Hybrid

CA$100K - CA$140K/yr

The Opportunity ShyftLabs is looking for a Senior Developer to help design, build, and scale our ... Drive development across teams for services built in Node.js, TypeScript, JavaScript, and Python

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All JobsPython Developer JobsSenior Python Developer JobsSenior Python Developer Jobs in Mississauga, ON

Senior Python Developer information

See Mississauga, ON salary details

$53.7K

$124.8K

$172.9K

How much do senior python developer jobs pay per year?

As of Sep 8, 2026, the average yearly pay for senior python developer in Mississauga, ON is $124,799.00, according to ZipRecruiter salary data. Most workers in this role earn between $105,500.00 and $141,295.00 per year, depending on experience, location, and employer.

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 cities near Mississauga, ON are hiring for Senior Python Developer jobs?

Cities near Mississauga, ON with the most Senior Python Developer job openings:

Senior Python Developer jobs near you
Infographic showing various Senior Python Developer job openings in Mississauga, ON as of August 2026, with employment types broken down into 1% Internship, 90% Full Time, 5% Part Time, and 4% Contract. Highlights an 80% Physical, 7% Hybrid, and 13% Remote job distribution, with an average salary of $124,799 per year, or $60 per hour.

Senior Software Developer

AssistIQ

Toronto, ON • On-site

Full-time

Posted 11 days ago

Job description

About the role:

As a Senior Software Developer, you will be responsible for designing, developing and managing the cloud based services that power the AssistIQ platform.

We're excited by candidates who enjoy and are capable of working in a fast-growing entrepreneurial environment. Your ultimate goal is to ensure we build our platform in a pragmatic, scalable and sustainable way.

We are looking for an engineer who embraces modern AI tools as a core part of their development workflow. You should be someone who actively uses AI to accelerate software development, improve code quality, troubleshoot problems, automate repetitive work and increase your overall engineering leverage.

To be successful, you will have to be able to juggle responsibilities in parallel, prioritize competing deliverables efficiently, communicate effectively across the organization and be driven by continuous improvement.

We would expect you to be knowledgeable, articulate, sensible, able to coordinate with other peers and senior executives, and collaborate and deliver results in a fast-paced environment where teamwork, professionalism, confidentiality, and communication are essential.

Key Responsibilities

  • Be a key stakeholder of the AWS cloud platform and ensure we follow engineering and cloud best practices
  • Design, develop and enhance the capabilities of the AssistIQ platform
  • Leverage AI-assisted development tools throughout the software development lifecycle to improve engineering velocity, quality and effectiveness
  • Use AI to accelerate activities such as software development, code review, debugging, testing, documentation, technical research and system design
  • Identify opportunities to use AI and automation to simplify repetitive engineering tasks and improve development workflows
  • Streamline the deployment process and ensure automation and continuous integration best practices are followed
  • Develop internal tools to optimize the management and monitoring of our deployments
  • Analyze current technologies and processes, and rapidly research, evaluate and experiment with new approaches to improve them, leveraging AI tools to accelerate the path from idea to implementation
  • Provide technical and analytical guidance to other Engineering team members
  • Participate in drafting, reviewing and maintaining technical documentation
  • Participate in product management planning of product features and development projects
  • Participate in the on-call production support rotation

Requirements

    • 5+ years' experience in software development
    • 3+ years' experience building serverless AWS applications and working with the AWS SDK
    • 3+ years' experience monitoring, supporting and enhancing production applications
    • 1+ years' experience actively using modern AI development tools as a core part of the software development lifecycle, including coding, debugging, testing, code review, technical research, documentation and system design
    • Demonstrated ability to leverage AI to materially improve engineering productivity while maintaining strong engineering judgment, code quality, security and reliability
    • Expertise in one of the following: JavaScript/TypeScript, Python or Go
    • Experience building CI/CD pipelines and applying automation and continuous integration best practices
    • Experience with infrastructure as code using AWS CDK or Terraform
    • Experience with SQL and NoSQL datastores such as PostgreSQL and DynamoDB
    • Experience with monitoring tools such as CloudWatch, Datadog or New Relic
    • Computer Science degree, relevant diploma or demonstrable equivalent work experience
    • Experience with ReactJS or React Native is an asset
    • Experience in the life sciences, healthcare or technology industry is an asset
    • Excellent oral and written communication skills in English; French communication skills are an asset
    • You are legally entitled to work in Canada

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