Backend Engineer

We 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. Responsibilities Architect 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. Qualifications Must-have: 3 years of experience in Backend Engineering preferably in Python or similar languages. Proven 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 (preferably OpenAI) 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 assistants. Experience with real‑time speech processing TTS / STT and telephony systems and PBXs (Asterisk, FreePBX, etc.). Additional Information What we offer Shared benefits 100% remote work with the option to join our offices in Bologna or Barcelona. Stock options plan after 6 months. One extra day off for your birthday. Access to iFeel, our mental wellbeing platform. Italy-specific 8/day meal vouchers; lunch is covered if you’re in the Bologna office. Private health coverage via Metasalute. Spain-specific Comprehensive private health insurance with Adeslas. Flexoh, flexible compensation platform. Wellhub gym & wellness network membership. Language courses. How 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 to tell you more about Tuotempo, our culture and the team. Technical interview with our Tech Managers, 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 will move forward with the offer Remote Work: Yes Employment Type: Full‑time Key Skills Business Intelligence Bidding Accounts Assistant Credit Control Account Development Content Development Lab Testing Experience: years Vacancy: 1 #J-18808-Ljbffr