Python Developer - Onsite Interview

We are looking for an experienced Python Developer to join our client in Montreal, QC for a full-time hybrid opportunity (3 days onsite).

Onsite Interview

Experience in years: 7+ Mandatory The ideal candidate will have strong expertise in building scalable RESTful APIs using FastAPI, SQLModel, Redis, and PostgreSQL, along with hands‑on experience in asynchronous programming, containerized environments, and event‑driven architectures. This role requires a strong engineering mindset, problem‑solving skills, and the ability to collaborate closely with architects and cross‑functional teams to deliver high‑performance, production‑grade solutions.

Core responsibilities

• Design and implement scalable, maintainable and high-performing RESTful APIs using FastAPI, SQLModel and Redis
• Write clean, efficient, and maintainable Python code
• Develop and maintain documentation
• Design and optimize database schemas and queries
• Create and maintain automated test suites
• Monitor and optimize API performance, implement caching strategies and rate limiting
• Collaborate with front end team to ensure smooth API integration
• Assist in implementing workflows for detecting, archiving and purging stale data based on retention policies
• Ensure proper logging and auditing of data lifecycle processes
• Mentor junior developers and review code
• Collaborate with the system architect to refine the API logic, enhance query performance and implement caching strategies

Required skills

• 7 years of professional Python development experience
• Strong experience with FastAPI or similar framework (Flask, Django REST)
• Deep understanding of REST API design principles
• Expertise in asynchronous programming with Python
• Solid experience with SQL databases (PostgreSQL preferred)
• Strong knowledge of API security best