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Gipo Logo Gipo · IT - Software Development

Backend Engineer

Spain, Madrid · Job Posted February 14, 2026
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Job Description

We are seeking a talented Backend Engineer to help us architect and build the next iteration of our AI-powered products. You will drive the innovation of our AI integration and build modern, scalable, real-time architecture, unlocking new capabilities and performances, starting from our conversational AI products. You’ll collaborate closely with AI engineers, product managers, and the broader engineering team.

Job Responsibility

  • Architect, develop, and maintain scalable, robust backend services, starting from our voice and chat AI applications
  • Experiment with new technologies to achieve real-time and seamless integrations, implementing POCs to try the latest trends in AI environment, partnering with AI/LLM engineers
  • Integrate 3rd party API integration such as Twilio (voice), WhatsApp, ElevenLabs, OpenAI and others
  • Implement real-time communication features (websockets, streaming), conversation architectures, and advanced voice capabilities
  • Design, build, maintain, and improve multi-agent orchestration frameworks for AI-powered conversations
  • Collaborate on CI/CD pipelines, ensure robust monitoring, logging, and operational support
  • Write clear documentation and support knowledge transfer within the team

Requirements

  • 3+ years of experience in OOP Backend Engineering
  • Proven skills in building real-time APIs (websockets, streaming, etc.) and familiarity with async programming
  • Hands-on experience integrating LLMs (preferably OpenAI), knowledge of MCP and exposure to multi-agent architectures
  • Experience integrating with third party communications APIs. Previous experience with Twilio and/or Whatsapp is highly desirable
  • Experience with database technologies (SQL and NoSQL), caching techniques and performance tuning
  • Experience with automated testing tools at various levels (unit testing, integration testing, e2e testing)
  • Strong communication and collaboration skills

Nice to have

  • Experience working with containerization (Docker) and cloud infrastructure (AWS, GCP, or Azure)
  • Experience with conversational AI frameworks (chatbot, voice assistant) and with AI/ML frameworks (LangChain, LangGraph)
  • Experience integrating with 3rd party communications APIs. Previous experience with Twilio and/or Whatsapp is highly desirable
  • Previous work migrating legacy systems to modern stacks
  • Experience with real-time speech processing, TTS/STT, and telephony systems and PBXs (Asterisk, FreePBX, etc.)

What we offer

  • 100% remote work, with the option to join our offices in Bologna or Barcelona
  • One extra day off for your birthday
  • Access to iFeel – our mental wellbeing platform
  • Comprehensive private health insurance with Adeslas
  • Flexoh – flexible compensation platform
  • Wellhub – gym & wellness network membership
  • Language courses
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