Sr. Software Engineer - RBAC & Authorization

About this role

About the Team The Access Control team owns authorization across ClickHouse Cloud. We design and enforce the roles and permissions model, organization hierarchies, API key management, and security boundaries that every product surface and tenant depends on. Having recently shipped custom roles and fine-grained access, we are now evolving our architecture to support our largest enterprise customer structures. What You Will Do - Architect and build the next generation of our authorization model: multi-level organization hierarchies, workspace isolation, and resource-scoped roles.

- Implement and enforce consistent authorization checks across all public and internal APIs. - Build tooling and migration pipelines to evolve live authorization models without downtime or customer disruption. - Partner cross-functionally with Product, Design, and Customer Identity teams to deliver seamless permission management UIs. What We Are Looking For - Experience: 6+ years building security platforms, access control engines, or core backend services at scale.

- Domain Expertise: Deep knowledge of RBAC/ABAC policy models, fine-grained permission enforcement, multi-tenancy isolation, API keys, and SAML/SSO. - Core Stack: Excellent TypeScript/Node.js fundamentals and strong schema design skills in PostgreSQL or relational stores. - Migration Discipline: Proven track record of executing live customer data migrations and building high-correctness systems where failure is not an option.

Ideal Backgrounds: Enterprise identity platforms, IAM security tools, zero-trust cloud infrastructure, or core authorization teams at major B2B SaaS companies. PERKS - Flexible work environment - ClickHouse is a globally distributed company and remote-friendly. We currently operate in over 25 countries. - Healthcare - Employer contributions towards your healthcare. - Equity in the company - Every new team member who joins our company receives stock options.

- Time off - Flexible time off in the US, generous entitlement in other countries. - A USD$500 Home office setup if you’re a remote employee. - Global Gatherings – We believe in the power of in-person connection and offer opportunities to engage with colleagues at company-wide offsites. CULTURE - WE ALL SHAPE IT As part of a rapidly scaling start-up, you will be instrumental in shaping our culture. Are you interested in finding out more about our culture? Learn more about our values here https://clickhouse.com/company/careers.