Strong experience with Node.js / Python (at least one deeply) Experience building and maintaining APIs Comfortable with async systems, queues, retries, and failure handling MongoDB (required) Ability to design schemas that support CRM-style workflows and logs React (or similar modern JS framework) Comfortable debugging production frontend issues AWS (EC2, S3, basic networking, IAM) Docker (or similar containerization) CI/CD basics (GitHub Actions or similar) Practical experience with OpenAI APIs Understanding of prompt-driven systems and AI workflows Experience with AI orchestration tools (Langflow, LangChain, or similar) is a big plus Experience with Twilio, Telnyx, or similar Understanding of call states, SIP concepts, webhooks, and event-driven systems