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Fastapi Developer Jobs in Ontario (NOW HIRING)

With a back-end team in the Philippines, I'm currently hiring for a Senior Software Engineer ... FastAPI Experience with React, Redux (RTK), CSS modules Experience with CI/CD, Clouds (AWS/GCP ...

Python tooling: pydantic, FastAPI, asyncio, pytest * Frontend: TypeScript, Angular * Data ... Strong fundamentals in computer science and software engineering * Experience building and ...

Apply Early

Sr. AI Engineer

Ottawa, ON

CA$91K - CA$114K/yr

Proficient in Python and frameworks such as Flask, langchain, llamaindex, and FastAPI. * Experience ... Experience with CI/CD pipelines (Azure DevOps, Jenkins, CircleCI, GitLab Actions). * Knowledge of ...

As an AI Engineer, you'll be working with a global team of AI and machine learning practitioners ... FastAPI, Uvicorn * Familiarity with Continuous Integration tools such as Jenkins * Nice to have:

Sr. AI Engineer

Oakville, ON · On-site

CA$91K - CA$114K/yr

Proficient in Python and frameworks such as Flask, langchain, llamaindex, and FastAPI. * Experience ... Experience with CI/CD pipelines (Azure DevOps, Jenkins, CircleCI, GitLab Actions). * Knowledge of ...

Sr. AI Engineer

Toronto, ON

CA$91K - CA$114K/yr

Proficient in Python and frameworks such as Flask, langchain, llamaindex, and FastAPI. * Experience ... Experience with CI/CD pipelines (Azure DevOps, Jenkins, CircleCI, GitLab Actions). * Knowledge of ...

... Developer (Java/Python) at Emergn you will take responsibility over designing, coding, testing and ... Experience with FastAPI and Django * PostgreSQL * Design Patterns * Architecture Styles

CA$91K - CA$114K/yr

Proficient in Python and frameworks such as Flask, langchain, llamaindex, and FastAPI. * Experience ... Experience with CI/CD pipelines (Azure DevOps, Jenkins, CircleCI, GitLab Actions). * Knowledge of ...

Python mastery (FastAPI, Pydantic, async programming), backend API design (RESTful, GraphQL), and React/TypeScript for HITL interfaces * Proven track record delivering production-ready AI solutions ...

... FastAPI or Flask. * Demonstrated experience owning features or technical projects from design ... Background in Computer Science, Mathematics, Engineering, or a related technical discipline. Why ...

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... FastAPI or Flask. * Demonstrated experience owning features or technical projects from design ... Background in Computer Science, Mathematics, Engineering, or a related technical discipline. Why ...

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Showing results 1-20

Fastapi Developer information

What are some common challenges FastAPI Developers face when integrating third-party services or APIs?

FastAPI Developers often encounter challenges when integrating third-party services, such as handling authentication protocols (like OAuth2), ensuring compatibility between JSON schemas, and managing asynchronous calls to avoid performance bottlenecks. It’s also common to troubleshoot and adapt to inconsistencies in external API documentation or rate limits. Collaborating closely with frontend teams and DevOps professionals helps streamline these integrations, ensuring robust, scalable API solutions.

What is the difference between Fastapi Developer vs Backend Developer?

AspectFastapi DeveloperBackend Developer
Required SkillsPython, Fastapi, REST APIs, async programmingMultiple languages (Python, Java, Node.js), REST/SOAP APIs, databases
Work EnvironmentWeb development, API-focused projects, microservicesBroader software development, server-side logic, database management
Industry UsageTech startups, SaaS, API-driven servicesEnterprise, e-commerce, finance, various industries

Fastapi Developers specialize in building high-performance APIs using Python and Fastapi, often within microservices architectures. Backend Developers have a broader scope, working with multiple languages and technologies to develop server-side applications across various industries. While Fastapi Developers focus on API efficiency, Backend Developers handle comprehensive backend systems.

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

To thrive as a FastAPI Developer, you need strong proficiency in Python programming, RESTful API design, and experience with FastAPI, often supported by a background in computer science or related fields. Familiarity with tools like SQL/NoSQL databases, Docker, and cloud platforms, as well as knowledge of asynchronous programming and API documentation tools like Swagger, is typically required. Excellent problem-solving skills, attention to detail, and effective communication set outstanding FastAPI developers apart. These skills are crucial for building reliable, high-performance APIs that meet modern application demands and facilitate seamless team collaboration.

What is a FastAPI Developer?

A FastAPI Developer is a software engineer who specializes in building web applications and APIs using the FastAPI framework, which is a modern, fast (high-performance) web framework for Python. FastAPI Developers are responsible for designing, developing, and maintaining backend services and APIs that are efficient, robust, and scalable. They often work with databases, authentication, and deployment processes, and ensure that the API endpoints adhere to best practices for security and performance. Their work is crucial for enabling smooth communication between front-end applications and backend systems.
What job categories do people searching Fastapi Developer jobs in Ontario look for? The top searched job categories for Fastapi Developer jobs in Ontario are:
Lead Software Engineer (Full Stack)

Lead Software Engineer (Full Stack)

Royal Bank of Canada

Toronto, ON

Full-time

Posted 23 days ago


Job description

Job Description

WHAT IS THE OPPORTUNITY?

Are you a creative, results-driven professional passionate about delivering high-performing applications? Join our collaborative and innovative team, where your ideas and contributions are valued.

Global Functions Technology (GFT) is part of RBC's Technology and Operations division. GFT's impact is far-reaching as we collaborate with partners from across the company to deliver innovative and transformative IT solutions. Our clients represent Risk, Finance, HR, CAO, Audit, Legal, Compliance, Financial Crime, Capital Markets, Personal and Commercial Banking and Wealth Management. We also lead the development of digital tools and platforms to enhance collaboration. GFT is known for fostering a culture of innovation, inclusivity, and collaboration. Our team values learning, mentorship, and collaboration, creating an environment where you can thrive personally and professionally.

The role is part of Market and Counterparty Credit Risk within GFT, focusing on rapid prototyping and building innovative AI solutions in risk management business area. You will play a key role in shaping MCCR's next-generation Agentic platform.

WHAT WILL YOU DO?

  • Design and develop enterprise-grade internal web applications end-to-end - from React/TypeScript front-ends to Python/FastAPI back-ends and PostgreSQL databases - modernizing model risk management workflows for 500+ users across the organization.
  • Build scalable, data-rich user interfaces - including multi-step form wizards, governance dashboards, document management portals, and self-service reporting tools - while ensuring a polished, intuitive user experience.
  • Collaborate extensively with Governance, Audit, Risk, and business stakeholders to translate complex regulatory and operational requirements into production-ready application features with quick delivery timelines.
  • Architect and deliver full-stack solutions across the entire application layer, with the ability to strengthen the team's front-end capabilities while contributing meaningfully to backend services and data layer.
  • Lead the creation of architecture blueprints, design documents, and technical artifacts, while evaluating and implementing emerging technologies to keep the platform modern and scalable.
  • Manage and mentor a small team of backend developers (30% of your time) conducting code reviews, 1:1s, sprint planning, and performance coaching while fostering a culture of technical quality and fast delivery.
  • Drive technical decisions on complex issues including application architecture, API design, database schema evolution, and CI/CD optimization, developing clear recommendations that align cross-functional teams.
  • Champion the introduction of AI-powered capabilities into the platform - including intelligent document analysis, semantic search, and LLM-assisted workflows - as the product roadmap evolves.
  • Ensure application quality, scalability, and security through robust testing strategies, performance optimization, observability, and adherence to enterprise standards.

WHAT DO YOU NEED TO SUCCEED?

Must have:

  • Master's degree in Computer Science, Software Engineering, or a related technical field
  • 7+ years of professional full-stack software development experience
  • Strong proficiency in React (v18/19), TypeScript, and modern front-end ecosystem (hooks, context, custom hooks, performance optimization, code splitting)
  • Experience with TailwindCSS, headless component libraries (Radix UI, shadcn/ui), and building data-rich UIs (TanStack Table, Recharts, complex form wizards)
  • Strong proficiency in Python (FastAPI or Flask), PostgreSQL, SQLAlchemy ORM, and RESTful API design with Pydantic validation
  • Hands-on experience with Docker, Kubernetes/OpenShift (OCP), and CI/CD pipelines (GitHub Actions or equivalent)
  • Experience with SSO/OIDC authentication integration (Azure AD/MSAL) and role-based access control implementation
  • Proven track record of mentoring or managing small development teams (3-5 developers), including code reviews, technical guidance, and performance feedback
  • Strong product mindset - ability to prioritize ruthlessly, deliver iteratively, and ship production features on tight timelines in an agile environment
  • Experience building enterprise-scale applications with 500+ concurrent users, with attention to scalability, reliability, and security
  • Excellent communication skills - technical writing, architecture documentation, and stakeholder presentations

Nice to Have:

  • Experience integrating LLM/AI APIs (OpenAI, Anthropic Claude, AWS Bedrock) or building RAG-based features into web applications
  • Familiarity with Snowflake, Elasticsearch, Redis, or Kafka/event-driven architectures
  • Proficiency with Storybook, design systems, or accessibility standards (WCAG 2.1)
  • Knowledge of data engineering concepts - CDC pipelines, star schema design, ETL/ELT patterns

WHAT'S IN IT FOR YOU?

We thrive on the challenge to be our best, progressive thinking to keep growing, and working together to deliver trusted advice to help our clients thrive and communities prosper. We care about each other, reaching our potential, making a difference to our communities, and achieving success that is mutual.

  • A comprehensive Total Rewards Program including bonuses and flexible benefits, competitive compensation, commissions, and stock where applicable

  • Leaders who support your development through coaching and managing opportunities

  • Ability to make a difference and lasting impact

  • Work in a dynamic, collaborative, progressive, and high-performing team

  • A world-class training program in financial services

  • Flexible work/life balance options

  • Opportunities to do challenging work

#LI-POST

#TechPJ

Job Skills

Big Data Management, Cloud Computing, Database Development, Data Mining, Data Warehousing (DW), ETL Processing, Group Problem Solving, Quality Management, Requirements Analysis

Additional Job Details

Address:

RBC CENTRE, 155 WELLINGTON ST W:TORONTO

City:

Toronto

Country:

Canada

Work hours/week:

37.5

Employment Type:

Full time

Platform:

TECHNOLOGY AND OPERATIONS

Job Type:

Regular

Pay Type:

Salaried

Posted Date:

2026-06-09

Application Deadline:

2026-07-09

Note: Applications will be accepted until 11:59 PM on the day prior to the application deadline date above

Our Employment Opportunities

At RBC, we are guided by living shared values of Client First, Integrity, Collaboration, Respect and Excellence and winning together as One RBC. We believe an inclusive workplace that has diverse perspectives is core to our continued growth as one of the largest and most successful banks in the world. Maintaining a workplace where our employees feel supported to perform at their best, effectively collaborate, drive innovation, and grow professionally helps to bring our Purpose to life and create value for our clients and communities. RBC strives to deliver this through policies and programs intended to foster a workplace based on respect, belonging and opportunity for all.

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Expand your limits and create a new future together at RBC. Find out how we use our passion and drive to enhance the well-being of our clients and communities at jobs.rbc.com.

RBC is presently inviting candidates to apply for this existing vacancy. Applying to this posting allows you to express your interest in this current career opportunity at RBC. Qualified applicants may be contacted to review their resume in more detail.

Employment Type: FULL_TIME