Senior Full Stack API Engineer

5700 Yonge St, North York, ON M2M 4K2, Canada

Job Description

Questrade Financial Group (QFG), through its companies - Questrade, Questbank, Questrade Wealth Management, Community Trust Company, Zolo, and Flexiti, provides securities and foreign currency investment, professionally managed investment portfolios, mortgages, real estate services, financial services and more. We use cutting-edge technology to help Canadians become much more financially successful and secure.

At QFG, we combine human-centric collaboration with AI-driven innovation to redefine financial services. The ideal candidate will be a catalyst for change, using AI to transform and deliver unparalleled customer experiences and shaping a future where AI empowers our teams to do their best work.

Join our diverse, inclusive, and hybrid workplace to unleash your creativity and nurture your curiosity without limits. If you share this sense of infinite possibility, come shape your future at QFG.

What’s in it for you as an employee of QFG?

Health & wellbeing resources and programs

Paid vacation, personal, and sick days for work-life balance

Competitive compensation and benefits packages

Work-life balance in a hybrid environment with at least 3 days in office

Career growth and development opportunities

Opportunities to contribute to community causes

Work with diverse team members in an inclusive and collaborative environment

This job posting is for an existing vacancy

We’re looking for our next Senior Fullstack API Engineer. Could It Be You?

At Questrade, we are revolutionizing how Canadians manage their wealth by offering advanced trading platforms, and cutting-edge technology. We are looking for a product-minded Senior Fullstack Engineer to join our API Platform team. In this role, you will design and build the gateway to our entire ecosystem. You will be responsible for the end-to-end journey of external developers and partners—from the moment they read our documentation to their first successful API call in our sandbox, all the way to secure, production-grade integrations.

This is a comprehensive role requiring deep full-stack engineering discipline. You will bridge the gap between frontend user experience (building self-serve developer portals and SDKs) and backend systems engineering (API gateways, security protocols, and high-performance routing).

Developer Experience (DX): Own the frontend and backend of our self-serve Developer Portal, ensuring a frictionless onboarding journey. Build realistic API sandbox environments and interactive testing tools. Collaborate with Technical Writers and Developer Advocates to generate, maintain, and automate SDKs and interactive API documentation.

Scaling Public, Partner APIs & MCP: Design, implement, and maintain API proxies and policies using Apigee, ensuring adherence to SaaS API standards. Build tooling and workflows for strategic partners to certify their integrations. Design and maintain our Model Context Protocol (MCP) servers and external API surfaces. Manage the versioning, deprecation, and backward compatibility of our public APIs.

API Identity & Access: Implement and maintain secure authentication and authorization protocols (OAuth 2.0, OIDC, API Keys, and Scopes). Collaborate with DevSecOps to implement robust rate-limiting, throttling, and consumer access management policies. Work closely with Identity Engineers to ensure developer credentials are secure yet simple to manage.

Cross-Functional Collaboration: Partner closely with DX Engineers, API Product Engineers, Tech Leads, and SecOps to define API specs, ensuring a world-class developer onboarding flow.

So are YOU our next Job Title? You are if you…

Education: Bachelor’s or Master’s degree in Computer Science, Software Engineering, or a closely related field.

Experience: 5+ years of professional software engineering experience, with a strong background in modern frontend frameworks (e.g., React, Next.js) and backend languages (e.g., Node.js, Go, Python, or Java).

API Expertise: Deep understanding of RESTful API design, GraphQL, and OpenAPI/Swagger specifications. Hands-on experience managing APIs via Apigee (or similar API Gateways like Kong/AWS API Gateway).

Security & Identity: Proven experience implementing OAuth 2.0 / OIDC, token management, and custom API Key validation.

Modern Paradigms: Exposure to or strong interest in Model Context Protocol (MCP) and building integrations optimized for LLMs/AI agents.

Mindset: Developer-first empathy with a passion for building clean interfaces and a systems-thinking approach to API lifecycle management.

Compensation Information:

Base salary range: $110,000 - $140,000

The final compensation package will be commensurate with the successful candidate's experience, skills, and geographic location (Canada). It includes a comprehensive benefits plan and a competitive incentive (bonus) program for Full-Time Permanent roles.

#LI-Hybrid

At Questrade Financial Group of Companies, with multiple office locations around the world, we are committed to fostering a diverse, inclusive and accessible work environment. This is an environment where individuals are treated with dignity and respect. Here, the unique skills and experience you bring will be valued. You will be supported and motivated, so that you can harness your unlimited potential. Our team reflects the diversity of the communities we serve and operate in. Having a collaborative and diverse team helps us push boundaries to bring the future of fintech into existence—not only for the benefit of our customers, but for those who build their career with us.

Questrade Financial Group of companies Applicant Tracking System utilizes artificial intelligence (AI) for application screening. The AI system operates on predetermined criteria, with final decisions subject to human review.

Candidates selected for an interview will be contacted directly. If you require accommodation during the recruitment/selection process, please let us know and we will work with you to meet your needs.

5700 Yonge St, North York, ON M2M 4K2, Canada