Senior Software Engineer (Node.js)

TL;DR

Senior Software Engineer (Node.js): Building and maintaining Auth0’s Attack Protection capabilities to mitigate credential stuffing and password spraying attacks with an accent on high-scale distributed systems and identity protocols. Focus on designing modular engineering tasks, implementing OIDC/OAuth/SAML standards, and collaborating with AI/ML teams to deploy detection models.

Location: Hybrid in Toronto, Ontario, Canada

Salary: $136,000 — $187,000 CAD

Company

A global identity and access management platform securing millions of daily logins worldwide.

What you will do

• Design and build security features using Node.js, AWS, Azure, and various databases (MongoDB, PostgreSQL, DynamoDB).
• Lead the technical breakdown of complex requirements into actionable modular engineering tasks.
• Implement and maintain Identity Protocols and Open Standards such as OpenID Connect, OAuth, and SAML.
• Collaborate with ML and AI teams to develop and deploy cutting-edge attack detection models.
• Mentor junior and mid-level engineers on system design, code quality, and operational rigour.
• Participate in scheduled on-call rotations to maintain Tier-0 global services at scale.

Requirements

• Practical experience using Node.js (JavaScript/TypeScript) or a similar language.
• Experience designing, analysing, and troubleshooting large-scale distributed systems.
• Thorough understanding of application security and cloud security best practices.
• Track record of driving complex, multi-quarter projects across organisational boundaries.
• Must be based in Toronto, Canada for a hybrid work arrangement.

Nice to have

• Existing knowledge of Identity Protocols like OAuth, OIDC, and SAML.
• Background in security engineering and application security.
• Proven understanding of architecture principles across infrastructure, security, and data layers.

Culture & Benefits

• Competitive salary with equity, bonuses, and comprehensive health, dental, and vision insurance.
• RRSP with company match, healthcare spending accounts, and telemedicine.
• Paid time off (PTO) and parental leave.
• Immersive, in-person onboarding experience to accelerate impact.
• Access to a global community spanning over 20 offices worldwide.