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Senior Python Flask Developer Jobs in Toronto, ON

Virtusa

Senior Python Developer

Mississauga, ON · On-site

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

Virtusa

Senior Python Developer

Mississauga, ON

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

Fintros

React Developer (Remote)

Toronto, ON · Remote

We have a well-documented micro-architecture service written in either Python (Flask) or Rails API ... Sketch, Figma, Adobe Suite Apply to join a team of senior developers that take pride in shipping ...

Fintros

React Developer

Toronto, ON

We have a well-documented micro-architecture service written in either Python (Flask) or Rails API ... Sketch, Figma, Adobe Suite Apply to join a team of senior developers that take pride in shipping ...

Atyeti Inc

Sr Python Developer

Toronto, ON

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 ...

Jay Analytix

Python Developer

Toronto, ON · On-site

Proficiency in Python and Flask framework. * Strong understanding of React.js and its core ... Collaborate with front-end developers to ensure seamless integration. General Development: * Write ...

Jay Analytix

Python Developer

Toronto, ON

Proficiency in Python and Flask framework. * Strong understanding of React.js and its core ... Collaborate with front-end developers to ensure seamless integration. General Development: * Write ...

Acquird.io

Senior Platform Engineer (Python)

Toronto, ON · On-site

$130 - $180/hr

... 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 ...

US Mobile

Senior Backend Engineer

Toronto, ON

CA$140K - CA$180K/yr

... Python (Flask, Django) * Design and implement asynchronous service communication using RabbitMQ or ... Collaborate with Product, QA, and DevOps teams to deliver reliable and scalable features * Write ...

Escalent

Developer, AI Transformation Team

Toronto, ON · On-site +1

CA$135K - CA$155K/yr

Strong proficiency in Python and experience with frameworks such as Django, Flask, or FastAPI ... Understanding of asynchronous programming, performance optimization, and scalable backend ...

d1g1t

Senior Software Engineer, Backend

Toronto, ON · On-site

About the Role We are looking for a Senior Software Engineer, Backend to join our engineering team ... Python web framework such as FastAPI or Flask. * Demonstrated experience owning features or ...

d1g1t

Senior Software Engineer, Backend

Toronto, ON

About the Role We are looking for a Senior Software Engineer, Backend to join our engineering team ... Python web framework such as FastAPI or Flask. * Demonstrated experience owning features or ...

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Senior Python Flask Developer information

What are Senior Python Flask Developers?

Senior Python Flask Developers are experienced software engineers who specialize in building web applications using the Python programming language and the Flask web framework. They are responsible for designing, developing, and maintaining scalable backend systems, APIs, and web services. In addition to strong coding skills, they often lead projects, mentor junior developers, and ensure best practices in code quality, security, and performance. Their expertise allows them to solve complex technical challenges and contribute to the overall architecture and success of software projects.

What are some common challenges faced by Senior Python Flask Developers when working on large-scale applications?

Senior Python Flask Developers often encounter challenges such as managing complex codebases, ensuring scalability, and maintaining performance as applications grow. Integrating Flask with other technologies (like databases, caching systems, or third-party APIs) can introduce architectural complexities. Additionally, balancing rapid development with writing maintainable, well-tested code is crucial. Collaboration with frontend developers, DevOps, and QA teams is frequent, requiring strong communication and problem-solving skills.

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

AspectSenior Python Flask DeveloperPython Developer
Required CredentialsBachelor's in CS or related, experience with Flask, REST APIsBachelor's in CS or related, basic Python knowledge
Work EnvironmentWeb development teams, startups, tech companiesSoftware development teams, startups, tech companies
Employer & Industry UsageTech firms, SaaS companies, startupsVariety of industries including finance, healthcare, tech
Search & Comparison IntentAdvanced roles, leadership, project scopeEntry to mid-level development, learning

The main difference between a Senior Python Flask Developer and a Python Developer lies in experience and responsibilities. Senior developers typically have more expertise in Flask, lead projects, and mentor junior staff, whereas Python Developers may focus on coding and basic application development. Both roles are essential in web development teams, but senior roles require deeper knowledge and leadership skills.

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

To thrive as a Senior Python Flask Developer, you need advanced proficiency in Python, deep understanding of the Flask framework, and experience designing scalable backend architectures, typically supported by a degree in computer science or related field. Familiarity with RESTful API development, database management systems like PostgreSQL or MySQL, and version control tools such as Git is essential, and certifications in cloud platforms or web development can be beneficial. Strong problem-solving skills, clear communication, and the ability to mentor junior developers are standout soft skills for this role. These abilities ensure efficient delivery of robust, maintainable web applications and foster productive collaboration within development teams.
What are the most commonly searched types of Python Flask Developer jobs in Toronto, ON? The most popular types of Python Flask Developer jobs in Toronto, ON are:
What are popular job titles related to Senior Python Flask Developer jobs in Toronto, ON? For Senior Python Flask Developer jobs in Toronto, ON, the most frequently searched job titles are:
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Senior Python Flask Developer jobs near you
Infographic showing various Senior Python Flask Developer job openings in Toronto, ON as of July 2026, with employment types broken down into 87% Full Time, 2% Part Time, 1% Temporary, and 10% Contract. Highlights an 81% Physical, 4% Hybrid, and 15% Remote job distribution.
Senior Python Developer

Senior Python Developer

Virtusa

Mississauga, ON • On-site

Other

Posted 20 days ago

Job description

Responsibilities Design, develop, and maintain scalable Python-based applications and services Lead technical design and architecture discussions for complex systems Write clean, efficient, and maintainable code following best practices Conduct code reviews and provide technical mentorship to junior and mid-level engineers Collaborate with product, DevOps, QA, and architecture teams Optimize performance, scalability, and reliability of applications Troubleshoot and resolve complex production issues Build and enhance automated testing frameworks Support CI/CD pipelines and modern DevOps workflows Ensure compliance with security, data, and quality standards Required Qualifications Bachelor's degree in Computer Science, Engineering, or equivalent experience 8+ years of professional software development experience Strong proficiency 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 with relational databases (PostgreSQL, MySQL, Oracle) and SQL Familiarity with NoSQL databases (MongoDB, DynamoDB, Redis) Solid knowledge of asynchronous processing and multithreading/multiprocessing concepts Experience with Git and modern version control workflows Preferred Qualifications Experience with cloud platforms (AWS, Azure, or GCP) Familiarity with containerization and orchestration tools (Docker, Kubernetes) Experience with data pipelines, ETL processes, or distributed systems Knowledge of messaging systems (Kafka, RabbitMQ, SQS) Experience building microservices and event-driven architectures Exposure to data science, machine learning, or AI platforms is a plus Testing & Quality Strong experience with testing frameworks (pytest, unittest, nose) Familiarity with test automation, integration testing, and performance testing Commitment to high code quality, reliability, and maintainability Soft Skills Strong problem-solving and analytical abilities Excellent written and verbal communication skills Ability to lead technical initiatives and influence architecture decisions Comfortable working in fast-paced, collaborative environments Passion for mentoring, learning, and continuous improvement

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About Virtusa

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We are builders, makers, and doers with the technical skills and domain expertise to transform your business at scale and speed without disruption. Our unique Engineering First approach blends deep industry expertise and empowered, agile teams, to create holistic solutions that seamlessly move the business forward. We help clients engage with new technology paradigms to creatively build solutions that drive them to the forefront of their industries.

Industry

It services

Company size

10,000+ Employees

Headquarters location

Westborough, MA, US

Year founded

1996

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