Job Overview¿Tiene las cualificaciones y habilidades adecuadas para este trabajo? Descúbralo a continuación y pulse en "solicitar" para ser considerado.Role: Senior / Principal Software EngineerSector: Artificial IntelligenceJob Type: Full-TimeSalary range: up to €100.000 + EquityContract type: Direct employment with our clientLocation: Onsite in BarcelonaWhat we are looking for+5-7 years of production experience with modern web stackProduction experience with Python, TypeScript, JavaScript or GoLangExperience with AI coding agents such as Claude Code, Cursor or CodexReal Product mindset and ability to work autonomouslyComfortable with Docker, SQL, testing and scalable architectureFluent Spanish and EnglishNice to haveExperience with LLMs, STT/TTS, OpenAI, Whisper, ElevenLabs or DeepgramExperience with LangChain,



LangGraph or similar AI orchestration toolsAWS/GCP, CI/CD and observability experienceStartup or early-stage product company experiencePrevious experience leading a team or acting as a principalWhat you’ll be doingBuilding scalable APIs and services for real-time voice interactionsDeveloping xhfqzwm product features end-to-end with React, TypeScript and AI infrastructureIntegrating LLM, STT and TTS workflows into productionWorking on agentic and multi-agent workflowsImproving architecture, observability, testing and engineering qualityWorking directly with the founders and senior team to shape the platform#J-18808-Ljbffr

📌 Senior Software Engineer (Barcelona)
🏢 Concentric Recruitment
📍 Barcelona