Senior Backend Engineer – Enterprise API & Auth

Salesforce, Inc.; San Francisco (CA); On-site; USD 173,000 - 260,000; Full time

Job summary

Salesforce, Inc. is seeking an experienced backend engineer to design and build scalable backend services and authentication flows for admin and user access.

You will collaborate with Product, Design, and Frontend to ship features that increase adoption and reliability across enterprise integrations. Applicants should have 6+ years of web/backend experience, proficiency in PHP/Hack or Java, and strong OO principles with OAuth 2.0/OIDC.

Qualifications

• 6+ years of professional experience building web applications or backend services.
• Experience with PHP/Hack, Java, Python, Ruby, Go, or similar languages.
• Experience with OAuth 2.0/OIDC and authorization models, ideally with Google Workspace or Microsoft 365 / Entra ID integrations (admin consent, domain-wide delegation, Graph or Google APIs).
• Ability to contribute to technical architecture discussions and drive technical decisions within the team.
• Understandable, testable, maintainable code.
• Strong communication skills, including explaining complex concepts to designers, support, and other engineers, and collaborating across teams.
• Solid computer science fundamentals: data structures, algorithms, distributed systems, and information retrieval.
• A related technical degree.

Responsibilities

• Design and build backend services and API methods for admin and user authentication and connection flows with Google and Microsoft (OAuth, domain-wide delegation, token management, and permission policies).
• Own and evolve the Admin Productivity Suite backend, including bulk approve/install pipelines, install-state storage, failure handling, and admin analytics.
• Partner with Product, Design, and Frontend to ship features that raise connected-user and DWA adoption, using experiments and data to guide the roadmap.
• Work across team boundaries (Platform, Slackbot, Enterprise Search, 3P Integrations) on shared permission, auth, and connector frameworks, including the evolution from 2.0 connectors toward MCP.
• Contribute heavily to team projects with significant business impact, and own the long-term health of the systems you build.
• Write secure, well-documented designs and work with Security through scoped review.
• Help support and operations triage and resolve production issues.
• Mentor other engineers, review code in depth, and improve engineering standards, tooling, and processes.

Skills

Backend development

PHP/Hack

Java

Python

OAuth 2.0 / OIDC

Communication

Distributed systems

Data structures & algorithms

Education

Related technical degree

Tools

Google Workspace

Microsoft 365 / Entra ID

Job description

Salesforce, Inc. is seeking an experienced backend engineer to design and build scalable backend services and authentication flows for admin and user access.

You will collaborate with Product, Design, and Frontend to ship features that increase adoption and reliability across enterprise integrations. Applicants should have 6+ years of web/backend experience, proficiency in PHP/Hack or Java, and strong OO principles with OAuth 2.0/OIDC.