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

The technology platform spans the breadth of Linux and Cloud environments, Python, Big data/Hadoop ... Knowledge of CI/CD and DevOps Tools such as GitHub, Docker, UCD, GitHub Action. * Experience on ...

Sr. DevOps Engineer

Toronto, ON

CA$144K - CA$180K/yr

emergiTEL is hiring a Senior DevOps Engineer - AWS for our client in the fintech / cryptocurrency ... Build AMI pipelines and infrastructure automation using Python, Go, or Bash with deterministic ...

We are looking for a versatile Senior Software Engineer to join our core team and help us build and ... Develop sophisticated scripts (Python, Bash) to automate repetitive tasks, optimize CI/CD pipelines ...

About the Role We are looking for a Senior DevOps Engineer to join the IT Investment Solutions ... Strong automation skills, scripting in Python, PowerShell, YAML, JSON. Experience with CI/CD tools ...

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Senior AI Developer/ Full Stack

Toronto, ON ยท On-site

CA$115K - CA$130K/yr

The Senior AI Developer/Full Stack is a hands-on role within the SalesSuperStar AI team, focused on ... The environment includes FastAPI, Python, React, TypeScript, PostgreSQL, Redis, Kafka, Twilio-based ...

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 ...

Senior Software Developer (Remote)

Toronto, ON ยท 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 ...

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 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 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 ...

As a Senior Software Developer your key area of responsibility will be driving full-stack ... Solid backend development understanding, ideally with C#, but open to Java and Python experience ...

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Showing results 1-20

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 Jun 18, 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 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.

What are the key skills and qualifications needed to thrive as a Senior Python Developer, and why are they important?

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 cities near Mississauga, ON are hiring for Senior Python Developer jobs? Cities near Mississauga, ON with the most Senior Python Developer job openings:
Infographic showing various Senior Python Developer job openings in Mississauga, ON as of June 2026, with employment types broken down into 75% Full Time, and 25% Contract. Highlights an 50% In-person, 25% Hybrid, and 25% Remote job distribution, with an average salary of $124,799 per year, or $60 per hour.
Senior Application Developer with Java and Python

Senior Application Developer with Java and Python

Scotiabank

Toronto, ON โ€ข On-site

Other

PTO

Posted 13 days ago


Job description

Requisition ID: 262773ย 
Join a purpose driven winning team, committed to results, in an inclusive and high-performing culture.

The Senior Developer will support the Global Treasury Technology team, working on multiple projects, partial application support, as well as assisting with enhancements

In this role you will:ย 

ย 
  • Primary scope of role is supporting daily operations (processes, batches, etc.)
  • Participate in development of cost effective and robust applications.
  • Provide technical support to applications in production and during user acceptance testing.
  • Participate in systems implementation, planning, and development.
  • Provide technical guidance to other team members.
  • Work within cross-functional teams to deliver project initiatives.
  • About 50% is building net new code, 50% working on existing code and application support.
  • Collaborating with core project teams, internal data platform team, infrastructure teams, security teams, as well as other internal parties.
  • Working on execution/programming/unit testing of the project
  • Working with Vendor applications.

Do you have the skills that will enable you to succeed in this role?ย 
ย 

  • 3+ years of progressive technical working experience in application programming, system analysis, design, unit testing and debugging.
  • 3+ years' experience with Talend, Java, Docker, K8S, SQL, Operating Systems (Linux Redhat), Tools (Jira, Confluence, Artifactory, Bitbucket, SonarQube, GIT).
  • 2+ years' experience using Linux or Unix, including related scripting
  • 3+ years Python, PySpark, or Scala
  • 2+ years hands-on experience with RDBMS Systems Server. Postgres preferred.
  • 2+ Nifi hands-on experience
  • Experience working with large volumes of data processed daily
  • 2+ years working with Elastic Search
  • Experience working on data transformation.
  • Familiarity with major transport protocols: FTP, SFTP and other SSH connectivity tools
  • Knowledge of financial instruments
  • Experienced in application / solutions architecture
  • Experience using source control systems, GIT preferred

What's in it for you?ย 
ย 

  • Diversity, Equity, Inclusion & Allyship - We strive to create an inclusive culture where every employee is empowered to reach their fullest potential, respected for who they are, and are embraced through bias-free practices and inclusive values across Scotiabank. We embrace diversity and provide opportunities for all employee to learn, grow & participate through our various Employee Resource Groups (ERGs) that span across diverse gender identities, ethnicity, race, age, ability & veterans.ย 
  • Accessibility and Workplace Accommodations - We value the unique skills and experiences each individual brings to the Bank and are committed to creating and maintaining an inclusive and accessible environment for everyone. Scotiabank continues to locate, remove, and prevent barriers so that we can build a diverse and inclusive environment while meeting accessibility requirements. ย ย 
  • Upskilling through online courses, cross-functional development opportunities, and tuition assistance. ย ย 
  • Competitive Rewards program including bonus, flexible vacation, personal, sick days, and benefits will start on day one.ย 
  • Community Engagement - no matter where you choose to work from; we offer opportunities for community engagement & belonging with our various programs.

Location(s): ย Canada : Ontario : Torontoย 
Scotiabank is a leading bank in the Americas. Guided by our purpose: "for every future", we help our customers, their families and their communities achieve success through a broad range of advice, products and services, including personal and commercial banking, wealth management and private banking, corporate and investment banking, and capital markets.ย ย 
At Scotiabank, we value the unique skills and experiences each individual brings to the Bank, and are committed to creating and maintaining an inclusive and accessible environment for everyone. If you require accommodation (including, but not limited to, an accessible interview site, alternate format documents, ASL Interpreter, or Assistive Technology) during the recruitment and selection process, please let ourย  Recruitment team know. If you require technical assistance, please click here. Candidates must apply directly online to be considered for this role. We thank all applicants for their interest in a career at Scotiabank; however, only those candidates who are selected for an interview will be contacted.