Backend Engineer

Job DescriptionWe are seeking a talented Backend Engineer to help us architect and build the next iteration of our AI-powered voicebot and chatbot platform.You will drive the migration from our current PHP / HTTP stack to a modern, scalable, real-time architecture, unlocking new capabilities and performance for our conversational AI products.You'll collaborate closely with AI engineers, product managers, and the broader engineering team.ResponsibilitiesArchitect, develop, and maintain scalable, robust backend services for voice and chat AI applications.Lead the migration from PHP / HTTP to a real-time backend framework.Integrate 3rd party APIs such as Twilio (voice), WhatsApp, ElevenLabs, OpenAI and others.Implement real-time communication features (websockets, streaming), conversation relays, and advanced voice capabilities.Design, build, and maintain 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.Work with AI / LLM engineers to facilitate seamless integration of AI modules.QualificationsMust-have :3+ years of experience in Backend Engineering, preferably in Python, Node.js or similar languagesProven skills in building real-time APIs (websockets, streaming, etc.) and familiarity with async programming.Strong experience with modern backend frameworks (FastAPI, Flask, Django, etc.) and with AI / ML frameworks (Langchain, Langgraph)Hands-on experience working with LLMs (preferablyOpenAI) and knowledge of MCP.Experience integrating with 3rd party communications APIs.Previous experience with Twilio and / or Whatsapp is highly desirable.Experience with voice technology APIs and speech synthesis (e.g., ElevenLabs, Google TTS).Experience with conversational interfaces is highly desirable.Experience in integrating LLMs and exposure to multi-agent architectures.Familiarity with database technologies (SQL and NoSQL).Strong communication and collaboration skills.Nice-to-have :Experience working with containerization (Docker) and cloud infrastructure (AWS, GCP, or Azure).Experience in CI / CD, DevOps processes, and testing tools.Previous work migrating legacy systems to modern stacks.Experience with conversational AI, chatbots, or voice assistantsExperience with real-time speech processing, TTS / STT, and telephony systems and PBXs (Asterisk, FreePBX, etc.)Additional Information? What we offer :We value a healthy work-life balance and long-term growth.Benefits vary by location, but here's what you can expect :Shared benefits100% remote work, with the option to join our offices in Bologna or BarcelonaStock options plan after 6 monthsOne extra day off for your birthdayAccess to iFeel – our mental wellbeing platformItaly-specific? €8 / day meal vouchers – lunch is covered if you're in the Bologna officePrivate health coverage via MetasaluteSpain-specific?? Comprehensive private health insurance with AdeslasFlexoh – flexible compensation platformWellhub – gym & wellness network membershipLanguage coursesHow does the recruitment process work?Online test – online async exercise to get a first sense of your tech skills.HR interview – a friendly chat to get to know you, your motivations, and tell you more about Tuotempo, our culture, and the team.Technical interview – with our TechManagers, including practical exercises to evaluate your approach and problem-solving skills as a developer.Final interview — a broader conversation to align on expectations and future growth.If it's a match, we'll move forward with the offer#J-*****-Ljbffr