Senior Full Stack Developer

Contract: 12 months

Location: Toronto, ON

Work Model: Hybrid, minimum 4 days onsite

Positions: 2

Role Overview

Seeking a Senior Full Stack Developer to build and enhance a production GenAI platform. The role combines hands-on Python/FastAPI backend development with React/TypeScript frontend development and integration of LLM/GenAI capabilities.

Key Responsibilities

- Build and deliver features across Python/FastAPI backend services and React/TypeScript frontend applications.
- Develop and integrate GenAI/LLM-powered application components.
- Build and maintain REST APIs and database integrations.
- Write and maintain automated tests using pytest, Vitest or similar frameworks.
- Participate in code reviews and maintain strong software engineering standards.
- Deploy and monitor containerized applications using Docker, Helm and Kubernetes/OpenShift.
- Troubleshoot production issues and support application reliability.
- Work collaboratively across engineering, research and product teams.
- Use AI-assisted development tools as part of the development workflow.

Must-Have Requirements
- Production experience with both Python and TypeScript/JavaScript .




- Robust experience with React or a comparable modern frontend framework.
- Python-based REST API development experience.
- Experience with relational and/or NoSQL databases such as PostgreSQL or MongoDB.
- Strong software engineering fundamentals including automated testing, Git, code reviews and coding standards.
- Strong communication and collaboration skills.

Nice to Have
- Experience building or productionizing LLM/GenAI applications , including RAG, prompt engineering, evaluation frameworks or agent orchestration.
- Docker, Kubernetes/OpenShift and Helm.
- CI/CD and production monitoring/observability.
- Data pipelines, dashboards or data visualization.
- Experience with AI-assisted development tools such as Claude Code, Windsurf or GitHub Copilot.

Additional Details
- 37.5 hours/week
- 2-round virtual interview process
- Equipment provided
- Potential extension/conversion: TBD
- Start: ASAP

Note: We use AI tools to: obtain basic information, detect plagiarism, false employment history or references, categorize your skills, and do an initial match with job posting.

📌 Full Stack Engineer - Python/FastAPI (Toronto)
🏢 Infotek Consulting
📍 Toronto