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Staff Software Engineer, Full Stack

Hercules - San Francisco, CA, USA - In-office - posted 2026-10-04

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Salary: USD 100,000 - 300,000 / annual

Hercules (hercules.app) is building the future of AI software development. We're seeking a senior or staff-level full-stack software engineer to build and own features across our platform. You will work on: - AI Agent: the AI harness enabling anyone to build powerful full-stack applications - App Builder: the interface for building, previewing, and deploying apps - Hosting infrastructure: backend for scalably and reliably hosting hundreds of thousands of apps - SDK: headless SaaS integrations including Hercules Commerce, Auth, CMS, Files & Media - Platform: user-friendly experience with enterprise-grade security and reliability - Internal AI coding harness: our internal coding tool designed to 10x engineering output Hercules operates with three core principles: we ship fast and iterate quickly; we strive for excellence in everything we do; and we are hungry to break through walls and achieve outcomes. The founding team works in-office in San Francisco (Kearny and Bush). We have a strong preference for in-office presence but are open to remote for exceptional candidates willing to work US time zones and travel to the office regularly. Benefits include unlimited AI token budget, take-what-you-need vacation policy, healthcare/vision/dental, daily lunches/dinners/snacks in office. REQUIREMENTS: - Incredibly strong software fundamentals: system design, architecture, data modeling, API design - Code and codebase quality: write clean, maintainable code; work effectively in monorepos - Product/design sense: track record of independently shipping features to customers - SaaS expertise: billing (subscriptions, entitlements), identity (OAuth, RBAC, SSO/SAML), product analytics (A/B testing, feature flags), i18n, notifications for large user bases - Core stack proficiency: TypeScript, React, containers, Postgres, Redis, Temporal - AI capability: able to leverage frontier AI coding tools to 10x workflow - Preferred tech familiarity: Clickhouse, Tailwind, IaC (CDK, Terraform), Docker, Otel, Hono, Drizzle ORM, Cloudflare, AWS, OpenAI, Anthropic, Google models

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