Lead Backend Engineer - Enterprise Admin & Auth Platforms

Momentum

San Francisco (CA)

On-site

USD 190,000 - 260,000

Full time

6 days ago

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Job summary

Slack is seeking a senior backend engineer in San Francisco to design and build scalable authentication and admin backend services. You will own the Admin Productivity Suite backend, partner with product and design, and drive architecture decisions across platforms including Slackbot and Enterprise Search.

Ideal candidates have strong CS fundamentals and proven experience with OAuth 2.0/OIDC and cloud integrations.

Qualifications

6+ years of experience building web apps or backend services.
Experience with PHP/Hack, Java, Python, Ruby, Go, or similar languages.
Experience with OAuth 2.0/OIDC and Google Workspace or Microsoft 365 integrations.
Ability to contribute to technical architecture discussions and drive decisions.
Understandable, testable, maintainable code.

Responsibilities

Design and build backend services and API methods for admin and user authentication and flows with Google and Microsoft.
Own and evolve the Admin Productivity Suite backend, including pipelines, storage, and analytics.
Partner with Product, Design, and Frontend to ship features using experiments and data to guide the roadmap.
Collaborate across Platform, Slackbot, Enterprise Search, and 3P Integrations on permission, auth, and connector frameworks.
Contribute to team projects with business impact and own the long-term health of the systems.
Write secure, well-documented designs and coordinate with Security for reviews.
Support and triage production issues and mentor engineers to raise standards.