Senior Developer, Fullstack - Identity and Access Management (IAM)

Fullscript•Toronto, ON

4d•Remote

About The Position

We are seeking a Senior Fullstack Developer for our Identity and Access Management (IAM) Engineering team. As a Senior Developer, you will play a critical role in developing and maintaining all things IAM, including authentication, authorization, and identity. You'll contribute directly to the systems powering sign-up, login, SSO integrations, and our OAuth flows. You’ll work closely with your teammates, engineering leads, product, and security stakeholders to deliver secure, reliable, and scalable solutions.

Requirements

A collaborative mindset and a willingness to share knowledge and ideas with teammates
Passion for IAM and security — you care about protecting users and understanding the threat landscape
Experience with authentication protocols, SSO (SAML, OAuth), RBAC, and MFA
5+ years of professional software development experience
Hands-on experience with modern web development — we use Ruby on Rails, React, JavaScript/TypeScript, GraphQL, and Apollo
A commitment to writing clean, maintainable code and fostering strong engineering practices

Responsibilities

Collaborate with your pod — a small, focused team of full-stack engineers — to build and maintain IAM capabilities
Contribute to backend and frontend codebases with an eye toward reliability, scalability, and security
Participate in technical design discussions and help break down projects into clear, actionable tasks
Identify and suggest improvements to our authentication and authorization flows
Help support the maintenance and uptime of IAM systems, including investigating and resolving production issues
Work closely with product, security, and legal stakeholders to ensure compliance and integrity of user data and access
Stay informed on evolving security practices, frameworks, and technologies