Senior Software Engineer, Core Identity (Auth0)

Okta•Toronto, ON

10d•Hybrid

About The Position

This role is for a Senior Software Engineer on the Core Identity team at Auth0, which is part of Okta. The Core Identity organization is responsible for the authentication pipeline, identity protocols, user sessions, and foundational elements of the Auth0 application. They also manage the platform's technical health, performance, and efficiency. The teams within Core Identity are composed of engineers with deep expertise in digital identity, focused on designing and operating robust, large-scale systems that impact millions of users daily and enable other product teams. This is an opportunity to solve complex distributed systems challenges at a global scale, working on critical services that form the backbone of the identity platform.

Requirements

4+ years of professional software development experience, or equivalent.
Proficiency in building backend services with Node.js (JavaScript or TypeScript).
Experience designing, building, and operating distributed systems in a cloud environment (e.g., AWS, Azure).
A strong commitment to quality, with experience in various testing strategies (e.g., unit, integration, end-to-end).
A product-oriented mindset, with the ability to understand customer needs and work collaboratively to find effective solutions.

Nice To Haves

Fluent at using AI tools as part of the Product Development Life Cycle (PDLC)
Experience in the identity and access management (IAM) domain.
Knowledge of security engineering principles and application security best practices.
Experience working effectively in a distributed, remote-first team.

Responsibilities

Design, build, and operate critical services that form the backbone of the identity platform.
Build innovative features and standards that extend the capabilities of Auth0’s platform.
Take ownership of the technical quality, security, reliability, and scalability of systems.
Drive architectural improvements and advocate for engineering best practices.
Work in a highly collaborative and cross-functional environment with Product, Security, Design, Architecture, and QA.
Deepen or gain expertise in identity, security, and modern cloud technologies (AWS, Azure) while working on distributed systems at scale.
Mentor other engineers and contribute to a culture of technical excellence and continuous improvement.
Participate in an on-call rotation to ensure critical services remain healthy and reliable.