Senior Python Developer

Location: Mississauga, Ontario, Canada

Date Posted: 02/06/2026

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

Qualifications

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

Key Job Details

Primary Location

Mississauga, Ontario, Canada

Job Type

Experienced

Required Experience

5

Skill

DE-Python_Full Stack (with SQL), Frameworks, DevOps.

Travel

No

Date Posted

02/06/2026