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Software Engineer, Platform, Tinker

Thinking Machines Lab· Core Engineering, Product, and Infrastructure
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San Francisco, CA$350k - $475kFull-timePosted 5mo ago

About the role

Software engineer to own platform systems for the Tinker fine-tuning API, focusing on billing, usage metering, permissions, organizations/teams, data exports, audit logging, and admin surfaces.

Responsibilities

  • Design the authorization layer across all products: RBAC, API key scoping, organization hierarchies, and permission boundaries.
  • Own billing infrastructure end to end, including usage metering and aggregation, plan management, payment processing, invoicing, and revenue recognition support.
  • Build and evolve the organizations and teams model: seat management, SSO/SAML, workspace isolation, and invite flows.
  • Implement data export and deletion pipelines that meet enterprise compliance and data residency requirements.
  • Build audit logging so customers and internal teams have clear visibility into who did what, when.

Qualifications

  • Bachelor’s degree or equivalent experience in computer science, engineering, or similar.
  • Proficiency in at least one backend language (we use Python or Rust).
  • Experience with at least one of: billing/payments infrastructure, identity and access control (RBAC/ABAC, OAuth, SAML), or multi-tenant platform systems.
  • Thrive in a highly collaborative environment involving many cross-functional partners and subject matter experts.
  • Bias for action with initiative to work across different stacks and teams to ship features.

Skills

Required:Backend programmingBilling and payments infrastructureIdentity and access control

Benefits

  • Generous health, dental, and vision benefits
  • Unlimited PTO
  • Paid parental leave
  • Relocation support as needed
Last updated Jul 8, 2026. Interested? Apply on the company site.
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About Thinking Machines Lab

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Thinking Machines Lab is an artificial intelligence research and product company. We’re building a future where everyone has access to the knowledge and tools to make AI work for their unique needs and goals.

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