ppOur client is building a conversational AI platform that automates phone calls, campaigns, and real-time call analytics. /p /brpThey are looking for a Senior Backend Developer or backend-focused Full-Stack Developer to build integrations with third-party APIs and support the continued development of their multi-tenant SaaS platform. /p /br /brh3Responsibilities /h3 /brul /brliBuild and maintain backend services using TypeScript and NestJS /li /brliIntegrate third-party APIs, SDKs, and webhooks /li /brliDesign and maintain REST APIs /li /brliWork with PostgreSQL, TypeORM, and database migrations /li /brliIntegrate OpenAI, Speech-to-Text,



and Text-to-Speech services /li /br /ul /br /brh3Requirements /h3 /brul /brli5+ years of software development experience /li /brliStrong TypeScript and NestJS experience /li /brliStrong PostgreSQL and TypeORM knowledge /li /brliExperience with REST APIs and third-party integrations /li /brliExperience with multi-tenant SaaS platforms /li /brliUnderstanding of LLM workflows and OpenAI integrations /li /brliExperience using AI coding tools such as Cursor, Copilot, or Claude Code /li /brliAbility to work independently with minimal supervision /li /br /ul /br /brh3Nice to Have /h3 /brul /brliVue 3 /li /brliTwilio, Vapi, WebRTC, or ElevenLabs /li /brliStripe integrations /li /brliBullMQ, pg-boss, or similar background job tools /li /br /ul /p #J-18808-Ljbffr

📌 B Backend Engineer (España)
🏢 HartleyCo
📍 España