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Architect and develop scalable, real-time backend services for AI-powered conversational products, integrating third-party APIs and ensuring operational robustness. | 3+ years of backend engineering experience, proficiency in real-time APIs, AI/ML integration, and database technologies, with strong collaboration skills. | 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. Responsibilities • 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. What to Expect in Your Journey With Us Your First Week: • Set up your development environment • Participate in onboarding sessions • Start exploring our product and familiarize yourself with the team Your First Month: • Gain familiarity with our workflows and processes • Tackle and resolve support tickets • Develop, test, and deploy your first feature to production • Monitor the feature’s performance and impact After Three Months: • Achieve deep understanding of our AI system integration • Deliver three to five new features to production • Identify opportunities for product improvements and have some of your proposals scheduled for upcoming development cycles After Six Months: • Collaborate closely with our AI/LLM engineering team • Research and assess integration of new frameworks and ideas into our architecture • Build and present proof of concepts (POCs) to demonstrate the potential impact of adopting this new technology Must-have: • 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 (preferablyOpenAI), 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: We value a healthy work-life balance and long-term growth. Benefits vary by location, but here’s what you can expect: Shared benefits • 🏡 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 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 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’ll move forward with the offer!