Full Stack Developer – AI Agent Platform (Express AI) (Remote)

Project OverviewWe’re building Express AI, a SaaS platform that allows small and medium-sized businesses (SMBs) to easily train and deploy their own dedicated AI agents for customer service, technical support, sales, and more.Our vision is to give SMBs the power of enterprise-grade AI without complexity. You’ll help build the core platform that powers this – including agent training interfaces, web deployment, dashboards, and integrations.Key Responsibilities • Develop scalable full-stack features using modern JavaScript frameworks • Build and maintain AI agent training modules (upload docs, FAQs, tone settings) • Integrate OpenAI, Whisper, LangChain, and other LLM APIs • Implement user-facing dashboards for chat/voices/social/email agent monitoring • Design multi-tenant systems with admin-level controls • Ensure reliability and scalability of the platform as we growTech Stack • Frontend: React.js, Next.js, TypeScript • Backend: Node.js, Express, MongoDB (or Postgres), Redis • AI & NLP: OpenAI API (ChatGPT, Whisper), LangChain, Python (optional) • DevOps: Docker, AWS or GCP (basic familiarity okay) • Other: WebSockets for real-time chat, REST APIs, GitRole Type • Full Stack Developer (preferred) • Frontend or Backend specialists also considered, but must be willing to collaborate on both sidesExperience Level • 3 to 6 years of professional experience • Previous work with SaaS platforms, AI tools, or multi-tenant architecture is a big plusMust-Have Skills • Proficiency in JavaScript/TypeScript • Strong experience with React.js and Node.js • Experience working with REST APIs and building secure web apps • Solid understanding of cloud deployment (AWS/GCP/Firebase) • Ability to work independently, self-manage, and deliver in a fast-paced environmentNice-to-Have Skills • Familiarity with LangChain, OpenAI, AI agent frameworks • Experience with voice/chat integration • Prior experience building tools for SMBs or customer support systemsEngagement Type • Full-time (preferred) or part-time with clear weekly availability • Remote (India-based candidates only)Why Join Us? • Work on a cutting-edge AI platform solving real problems for real businesses • Fast-moving, no-red-tape team environment • Build something that will impact millions of small businesses globally