Skip to content

Sim

Open-source AI workspace for building AI agent workflows

aiSan Francisco, CA1-50Series AOnsiteFounded 2025Salary transparent
About

Sim builds an open-source platform with a visual drag-and-drop canvas, conversational interface, and API for teams to create, deploy, and manage AI agents. It connects over 1,000 integrations and major LLMs like OpenAI, Anthropic, and Gemini to automate workflows such as research, support, and data processing. Used by over 100,000 builders at startups and Fortune 500s, it enables production-scale agentic automation with SOC2 compliance.

Tech stack
Next.jsTypeScriptReactFlowPostgreSQLDrizzleZodSocket.ioTailwind CSSReactWebSocketsJavaScriptAWSPythonSQLSalesforceClayGongOpenAIagentic workflows
Open roles 5

Software Engineer, Frontend

Builds and owns the frontend platform including agent-building canvas, UI components, and real-time interactions using React and TypeScript. Collaborates with engineering, design, and product to ship performant developer experiences at scale in a Next.js monorepo.

140k – 220kSan Francisco, CAFrontend EngineeringOn-siteReactCrdts

Founding GTM Engineer

Builds GTM and RevOps infrastructure from scratch, integrating tools like Salesforce and Clay, automating workflows with AI agents, and engineering data flows for sales operations. Requires 3+ years experience coding in Python/JS/SQL and scaling SaaS stacks.

120k – 200kSan Francisco, CAGTM EngineeringOn-site3+ YOESQLCRM

Founding Design Engineer

Founding engineer owning design and development of a real-time visual canvas for building AI agents, blending UI/UX with frontend engineering. Requires deep React/TypeScript expertise and experience with interactive developer tools.

120k – 200kSan Francisco, CAFrontend EngineeringOn-siteReactUi/Ux

Software Engineer, Platform

Leads the visual platform for building AI agents via drag-and-drop canvas, owning front-end architecture, real-time interactions, and workflow execution bridge. Requires deep React/TypeScript expertise and experience with complex interactive UIs for developers.

140k – 220kSan Francisco, CAFullstack EngineeringOn-siteAWSReact

Software Engineer, Agents

Owns end-to-end development of agentic workflow engine and AI Copilot for natural language workflow creation/debugging. Builds LLM integrations, orchestration layer, and maintains production reliability in Next.js monorepo.

140k – 220kSan Francisco, CABackend EngineeringOn-siteBunAWS