Founding UX / Fullstack Engineer

Founding Frontend UX EngineerLocation: Fully RemoteCompensation: Founders Equity (4-year vest, 1-year cliff). Salary only after closing our next round (6 months worst-case).About SubconsciousWe're building the interface layer for understanding human behavior. Subconscious.ai lets companies simulate synthetic populations to test ideas, predict outcomes, and uncover why people make decisions, all powered by causal AI.We were accepted into Endless Fronteir Labs, Creative Destruction Labs, and Antler. You will have exposure to the 3 most competitive, 1% acceptance rate, top-level accelerator programs.Backed by OpenAI and Sequoia insiders, we’re scaling fast and looking for a frontend engineer to help us push the frontier.The RoleOwn the product experience for a platform that visualizes the decision graph of humanity. You’ll design interactive tools that let users explore complex simulations, test incentives, and run experiments all through a sleek, fast interface.We need at least 3 years of experience and those interested in Causality and Human Behavior. We are looking for Real Founding Engineers who can work closely with our enterprise customers to build magical UX experiences. Engineers who are familiar with AI Engineering and Agentic frameworks such as Agno, OpenAI Symphony, crewAI, Langchain, and others.This isn’t just about frontend polish or vibe coding, it’s about helping define a new UX primitive for how people interact with their business.RESPONSIBILITIESDevelop and optimize simulation models, including designing experiments, analyzing results, and improving accuracy, speed, and consistency.Conduct novel research, implement innovative approaches, and document findings internally while publishing research papers externally.Collaborate with cross-functional teams, including backend, frontend, and researchers, to integrate, deploy, and maintain solutions.Design, build, and maintain responsive front-end interfaces (React), server-side logic (Node.js, FastAPI), and RESTful APIs.Manage databases for efficient data storage and retrieval while addressing performance bottlenecks and ensuring security compliance.Implement testing strategies, including unit and integration tests, and manage deployment pipelines to ensure robust applications.REQUIREMENTSStrong proficiency in AI Engineering, Claude Code, Codex, Gemini, OpenAI Symphony or similar AI test harnesses engineering disciplinesExperience with agentic engineering (agno, crewai, langchain, langsmith) and entrepreneurshipStrong interest in Behavioral Science, Economics, or PsychologyStrong proficiency in JavaScript, Typescript, Python, or similar languagesExperience with frontend and backend frameworks and librariesInterested in the practical application of artificial intelligence for simulation and modeling, and care deeply about Subconscious's mission to simulate the future at a global scaleCapability to flex between different projects across platform development, model research, and other engineering initiativesWilling to work in person in our office in New York, NYHow to ApplyEmail with your resume, GitHub/portfolio, and a short note on why causal AI or simulating behavior excites you. Keep it weird, keep it smart.