Lead Backend Engineer – Identity (CIAM) Migration
We’re hiring a Lead Backend Engineer (Identity) to spearhead one of the most critical platform initiatives: migrating and modernising identity infrastructure for a product serving 10M+ users across 100+ services.
This is not a greenfield build. You’ll lead the integration and migration to Auth0 (Okta) while extracting identity from a 10+ year-old monolithic system into a scalable, shared microservice architecture.
This is a first hire, leadership role-you’ll define the architecture, lead execution, and build the team from the ground up.
Key Responsibilities
• Lead end-to-end identity migration from legacy monolith to modern microservices
• Own integration of Auth0 (Okta) into a large-scale production environment
• Design and implement scalable authentication & identity architecture
• Define and execute phased migration strategies with minimal disruption
• Build a shared identity platform serving B2C and B2B2C use cases
• Operate across 100+ microservices in a distributed system
• Establish best practices for:
• Authentication & authorization flows
• Identity APIs and service boundaries
• Observability and reliability in identity systems
• Act as technical lead and founding team member, hiring and mentoring future engineers
• Collaborate across product and engineering teams globally
Must-Have
• Proven experience leading end-to-end identity vendor migration or implementation in a large-scale environment (millions of users)
• Strong systems architecture expertise, especially:
• Distributed systems
• Microservices at scale (100+ services)
• Migration from monolith → services
• Deep backend engineering experience (Node.js / TypeScript or Golang)
• Experience defining and implementing authentication & identity infrastructure
• Track record of technical leadership (staff/principal level or equivalent)
• Ability to operate as a first hire / builder / leader
Highly Preferred
• Customer Identity (CIAM) experience (B2C / B2B2C)
• Experience with Auth0 / Okta (or similar identity providers)
• Hands-on Golang experience (or willingness to ramp)
• Experience in large-scale product companies (e.g., Stripe, fintech, consumer platforms)
Remote, but East Coast US only
Apply tot his job
Apply To this Job
This is not a greenfield build. You’ll lead the integration and migration to Auth0 (Okta) while extracting identity from a 10+ year-old monolithic system into a scalable, shared microservice architecture.
This is a first hire, leadership role-you’ll define the architecture, lead execution, and build the team from the ground up.
Key Responsibilities
• Lead end-to-end identity migration from legacy monolith to modern microservices
• Own integration of Auth0 (Okta) into a large-scale production environment
• Design and implement scalable authentication & identity architecture
• Define and execute phased migration strategies with minimal disruption
• Build a shared identity platform serving B2C and B2B2C use cases
• Operate across 100+ microservices in a distributed system
• Establish best practices for:
• Authentication & authorization flows
• Identity APIs and service boundaries
• Observability and reliability in identity systems
• Act as technical lead and founding team member, hiring and mentoring future engineers
• Collaborate across product and engineering teams globally
Must-Have
• Proven experience leading end-to-end identity vendor migration or implementation in a large-scale environment (millions of users)
• Strong systems architecture expertise, especially:
• Distributed systems
• Microservices at scale (100+ services)
• Migration from monolith → services
• Deep backend engineering experience (Node.js / TypeScript or Golang)
• Experience defining and implementing authentication & identity infrastructure
• Track record of technical leadership (staff/principal level or equivalent)
• Ability to operate as a first hire / builder / leader
Highly Preferred
• Customer Identity (CIAM) experience (B2C / B2B2C)
• Experience with Auth0 / Okta (or similar identity providers)
• Hands-on Golang experience (or willingness to ramp)
• Experience in large-scale product companies (e.g., Stripe, fintech, consumer platforms)
Remote, but East Coast US only
Apply tot his job
Apply To this Job