StackAI - Staff Backend Engineer
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Requirements
• 6+ years of backend engineering experience, with a track record of operating at Staff level or as a technical lead on complex, production systems. • Deep expertise in SSO, SAML, and OIDC — you've built or owned identity and authentication systems, not just consumed them. • SSO, SAML, and OIDC • Broad understanding of identity provider (IdP) architecture and enterprise auth patterns. • identity provider (IdP) architecture • Strong proficiency in Python with experience in FastAPI or similar modern frameworks. • Python • FastAPI • Deep knowledge of distributed systems design, database architecture, and scaling strategies. • distributed systems design • Hands-on experience with SQL and NoSQL databases (e.g., Postgres, Supabase, SQLAlchemy). • SQL and NoSQL databases • Strong command of cloud infrastructure (AWS: EC2, S3, RDS, Lambda) and containerization (Docker, Kubernetes). • cloud infrastructure • containerization • Comfort operating in a fast-paced startup where priorities shift and impact is immediate. • Experience with entitlements management, usage-based metering, or billing systems (e.g., Stripe Billing, Lago, or custom metering pipelines). • entitlements management • usage-based metering • billing systems
Responsibilities
• Architect and scale core systems — Design, build, and own the backend services that power our no-code AI platform, from API layer through data pipeline. • Architect and scale core systems • Lead authentication and identity infrastructure — Own our SSO, SAML, and OIDC integrations, ensuring enterprise-grade auth that scales with our customer base. • Lead authentication and identity infrastructure • Set technical direction — Define system design patterns, service boundaries, data modeling approaches, and long-term infrastructure strategy. • Set technical direction • Mentor and elevate the team — Raise the bar through design reviews, pairing, knowledge-sharing, and establishing best practices across backend engineering. • Mentor and elevate the team • Drive reliability and observability — Proactively identify bottlenecks, improve performance, and evolve our infrastructure before problems become incidents. • Drive reliability and observability
Benefits
• $170K – $250K • Offers Equity • Offers Bonus • Stack AI is a no-code, drag-and-drop platform for designing, testing, and deploying AI workflows powered by large language models. Our visual interface lets teams connect data sources to AI models and ship production applications — chatbots, document processing pipelines, database Q&A tools, and more — without writing code. • We're scaling from thousands to millions of users, and the backend systems that make that possible need a dedicated technical leader. That's where you come in. • You'll join a lean, high-impact engineering team where you own a major slice of our technical future. This role is for someone who wants to architect complex systems at scale, mentor a growing team, and play a defining role in how AI workflows are built and delivered to thousands of organizations.
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