Senior Backend Engineer – Identity & Access (Auth, SSO)

Mitti By Safetyculture; Sydney; On-site; AUD 120,000 - 180,000; Full time

Benefits offered by this job

Equity

Flexible/remote-friendly options

Professional development

Hackathons & Workshops

Culinary crew on-site

Coffee on tap & beverages

Wellbeing programs

On-site gym

Team celebrations

Job summary

Mitti by SafetyCulture is seeking a Senior Backend Engineer to join the Foundations team in Sydney, NSW. You’ll own authentication, session management, and scalable identity flows across web and mobile, aligning with security and product needs while modernising legacy systems into targeted microservices.

Reporting to the Engineering Manager, you will collaborate with a small pod of engineers to deliver zero-downtime migrations, implement SSO across tenants, and apply robust security practices in

Qualifications

• Deep expertise in authentication, session management and SSO-related concepts.
• Strong backend track record; Golang favored but open to identity-focused backend generalists.
• Experience designing safe migrations in live, high-traffic systems with dual writes/backfills.

Responsibilities

• Own the authentication and session management domain, including SSO across web and mobile.
• Lead migrations from legacy identity to microservices with zero downtime.
• Design and evolve provisioning and auth systems (SCIM, SAML, OAuth 2.0, OIDC).
• Apply identity security best practices: MFA, session management, audit logs, credentials handling.
• Collaborate in a small pod and align with Security and product teams.
• Build AI-native automations as part of delivery workflow.

Skills

Identity & access

Backend engineering

Golang

Migrations

Multi-tenant

PostgreSQL

AWS

SOC 2 awareness

Tools

PostgreSQL

AWS tooling

Job description

Mitti by SafetyCulture is seeking a Senior Backend Engineer to join the Foundations team in Sydney, NSW. You’ll own authentication, session management, and scalable identity flows across web and mobile, aligning with security and product needs while modernising legacy systems into targeted microservices.

Reporting to the Engineering Manager, you will collaborate with a small pod of engineers to deliver zero-downtime migrations, implement SSO across tenants, and apply robust security practices in