StackAI

Full-stack Engineer

• Own enterprise sign-on. Deliver SSO across OIDC and SAML so customers onboard with their own identity provider.
• Own authorization and RBAC. Build role-based access control with fine-grained, query-time enforcement across the product.
• Own provisioning and lifecycle. Deliver SCIM provisioning and directory sync so user and group management stays in step with the customer's directory.
• Own delegated and machine identity. Build token exchange, on-behalf-of flows, service accounts, and domain-wide delegation so agents and services act with scoped authority.
• Own access governance. Build the entitlements, session and token management, and controls that keep access clean and auditable at scale.

Senior Software Engineer, Identity & Access

• Own the execution engine. The runtime, scheduling, and sub-agent parallelization that run every agent on the platform.
• Make long-running work durable. Build checkpointing, resumption, and recovery so agents survive failures and restarts and pick up exactly where they left off.
• Shape the execution model. Decide how work is scheduled, queued, and moved from synchronous to asynchronous, so the platform stays correct and responsive as load grows.
• Engineer for scale and reliability. Hold the engine to strict health targets for worker freshness, deploy safety, and drain time, and keep latency and throughput strong as volume grows.
• Keep the engine open to the ecosystem. Make it straightforward to bring new agent harnesses, orchestration frameworks, and model capabilities into the runtime.

Senior Software Engineer, Engine & Distributed Systems

Platform Engineer

• Help build the public API as a product. Design, version, and evolve the API and SDKs that Stack AI customers build on, and keep the developer experience first-class.
• Set our API standards. Help define the conventions, versioning and deprecation policy, and review bar that keep every API across the platform consistent and predictable.
• Make agent runs observable. Build tracing and instrumentation that let anyone follow a single agent run end to end, across its models, tools, and sub-agents.
• Turn usage into analytics customers act on. Build the reporting that shows customers how their agents perform, what they cost, and where to improve.
• Own the audit trail. Build the audit logging and team-scoped views enterprises rely on.

Senior Software Engineer, Identity & Access

Senior Software Engineer, Engine & Distributed Systems

Platform Engineer, APIs – Observability