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

Job Title Senior Python Developer About your role: At Fiserv, we are dedicated to transforming financial services technology to benefit our clients. As a Software Development Engineer, you will play ...

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... in Python and object-oriented programming Experience with at least one major Python web framework (Django, Flask, or FastAPI) Strong understanding of RESTful API design and development Experience ...

... in Python and object-oriented programming Experience with at least one major Python web framework (Django, Flask, or FastAPI) Strong understanding of RESTful API design and development Experience ...

Design, develop, and maintain robust and scalable RESTful APIs using Python. * Collaborate with cross-functional teams including frontend, DevOps, and QA to deliver high-quality features. * Work with ...

Senior Platform Engineer (Python)

Toronto, ON · On-site

CA$130K - CA$180K/yr

... Python Developer for a Platform (not applications) team * Open on seniority from Senior to Staff ... level About Us: We're one of the top retail analytic platforms that help marketing teams/brands ...

Python AI Engineering Develop scalable Python services with async processing, APIs, and optimization for latency, cost, and token usage. Safety & Governance Implement guardrails, moderation, prompt ...

He/She will have the opportunity to work with various stakeholders (senior level, and subject ... Experience with DevOps and continuous delivery and deployment methodologies based off bitbucket ...

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Showing results 1-20

Senior Python Developer information

See Toronto, ON salary details

$54.4K

$126.4K

$175.1K

How much do senior python developer jobs pay per year?

As of Jul 8, 2026, the average yearly pay for senior python developer in Toronto, ON is $126,437.00, according to ZipRecruiter salary data. Most workers in this role earn between $106,886.00 and $143,151.00 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 are the most commonly searched types of Python Developer jobs in Toronto, ON? The most popular types of Python Developer jobs in Toronto, ON are:
What job categories do people searching Senior Python Developer jobs in Toronto, ON look for? The top searched job categories for Senior Python Developer jobs in Toronto, ON are:
What cities near Toronto, ON are hiring for Senior Python Developer jobs? Cities near Toronto, ON with the most Senior Python Developer job openings:
Infographic showing various Senior Python Developer job openings in Toronto, ON as of July 2026, with employment types broken down into 89% Full Time, and 11% Contract. Highlights an 56% In-person, 11% Hybrid, and 33% Remote job distribution, with an average salary of $126,437 per year, or $60.8 per hour.

Senior Python Developer

Monitise

Toronto, ON

Full-time

Posted 2 days ago


Job description

Calling all innovators - find your future at Fiserv.

We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants, and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv.

Job Title

Senior Python Developer

About your role:
At Fiserv, we are dedicated to transforming financial services technology to benefit our clients. As a Software Development Engineer, you will play a critical role in designing, developing, and maintaining high-quality software applications. You will work with cross-functional teams to deliver solutions that align with our business goals and client needs.

Responsibilities and Duties
  • Design and deliver high-quality features and enhancements.
  • Own the end-to-end delivery of large features within your team that could span 3+ months.
  • Create technical design specifications in collaboration with other members of the engineering team.
  • Provide estimates and actively participate in the sprint planning process.
  • Produce highly secure solutions.
  • Tune the performance of our distributed system to ensure they operate within our SLAs.
  • Peer review other engineers' code.
  • Mentor other engineers to create good technical solutions to problems and ship code quickly to our customers.
Qualifications and Skills
  • Experience with Python, Flask, and Django.
  • Experience with cloud computing and container-based distributed systems (Docker or Podman).
  • Experience working with relational databases (preferably MySQL) and high proficiency with SQL.
  • Understanding of higher-level RDBMS concepts (locking and transaction model, isolation levels, deadlocks, etc.).
  • Significant experience with at least one dynamically typed, object-oriented programming. language (preference for Python).
  • Great understanding of distributed systems and micro-service architecture.
  • Hands-on experience in using message brokers such as RabbitMQ.
  • Deep understanding of restful API development.
  • Demonstrated ability to work in a fast-paced customer centric environment.
  • 5+ years of experience in software development.
  • Excellent communication and organization skills.
  • Proven experience using code repositories such as GitHub.
  • Bachelor's degree in computer science, software engineering, or equivalent.
  • Familiar with Unix-like environments.

A propos de votre role :

Chez Fiserv, nous nous consacrons a la transformation de la technologie des services financiers au profit de nos clients. En tant qu'ingenieur en developpement logiciel, vous jouerez un role essentiel dans la conception, le developpement et la maintenance d'applications logicielles de haute qualite. Vous collaborerez avec des equipes interfonctionnelles pour fournir des solutions qui correspondent a nos objectifs commerciaux et aux besoins de nos clients.

Responsabilites et fonctions

  • Concevoir et livrer des fonctionnalites et ameliorations de haute qualite.Assurer la livraison complete de grandes fonctionnalites au sein de votre equipe, pouvant s'etendre sur 3 mois ou plus.
  • Rediger des specifications techniques en collaboration avec les autres membres de l'equipe d'ingenierie.
  • Fournir des estimations et participer activement au processus de planification des sprints.
  • Produire des solutions hautement securisees.
  • Optimiser la performance de notre systeme distribue afin de garantir son fonctionnement conformement a nos SLA.
  • Examiner le code des autres ingenieurs.
  • Encadrer les autres ingenieurs pour creer de bonnes solutions techniques aux problemes et livrer rapidement le code a nos clients.

Qualifications et competences

  • Experience avec Python, Flask et Django.
  • Experience avec l'informatique en nuage et les systemes distribues bases sur des conteneurs (Docker ou Podman).
  • Experience de travail avec des bases de donnees relationnelles (de preference MySQL) et grande maitrise de SQL.
  • des concepts avances des SGBDR (verrouillage et modele de transaction, niveaux d'isolation, interblocages, etc.).
  • Experience significative avec au moins un langage de programmation oriente objet a typage dynamique (preference pour Python).
  • Excellente comprehension des systemes distribues et de l'architecture micro-services.
  • Experience pratique de l'utilisation de brokers de messages tels que RabbitMQ.
  • Comprehension approfondie du developpement d'API RESTful.Capacite demontree a travailler dans un environnement rapide et centre sur le client.
  • Plus de 5 ans d'experience en developpement logiciel.
  • Excellentes competences en communication et en organisation.Experience averee de l'utilisation de depots de code tels que GitHub.
  • Baccalaureat en informatique, genie logiciel ou equivalent.
  • Familiarite avec Unix.

#LI-IH1

This posting is for an existing vacancy.

Salary Range:

$114,400.00-$143,000.00

Thank you for considering employment with Fiserv. Please:

  • Apply using your legal name

  • Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).

Our commitment to Diversity and Inclusion:

Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.

Note to agencies:

Fiserv does not accept resume submissions from agencies outside of existing agreements.Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.

Warning about fake job posts:

Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.