Backend Engineer (AI)

TL;DR

Backend Engineer (AI): Architecting and building the next iteration of AI-powered products with an accent on real-time, scalable architecture and AI integration. Focus on integrating third-party APIs, implementing real-time communication features, and improving multi-agent orchestration frameworks for AI-powered conversations.

Location: Remote from Italy or Spain, or hybrid in Bologna or Barcelona.

Company

hirify.global transforms healthcare experiences through intelligent digital solutions.

What you will do

• Architect, develop, and maintain scalable, robust backend services for voice and chat AI applications.
• Experiment with new technologies to achieve real-time and seamless integrations, partnering with AI/LLM engineers.
• Integrate 3rd party APIs such as Twilio, WhatsApp, ElevenLabs, and OpenAI.
• Implement real-time communication features, conversation architectures, and advanced voice capabilities.
• Design, build, maintain, and improve multi-agent orchestration frameworks for AI-powered conversations.
• Collaborate on CI/CD pipelines and ensure robust monitoring, logging, and operational support.

Requirements

• 3+ years of experience in OOP Backend Engineering.
• Proven skills in building real-time APIs 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; 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.
• 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 and with AI/ML frameworks (LangChain, LangGraph).
• Previous work migrating legacy systems to modern stacks.
• Experience with real-time speech processing, TTS/STT, and telephony systems and PBXs.

Culture & Benefits

• 100% remote work, with the option to join offices in Bologna or Barcelona.
• One extra day off for your birthday.
• Access to a mental wellbeing platform.
• Benefits vary by location.
• Comprehensive private health insurance (Spain).
• Flexible compensation platform (Spain).
• Gym & wellness network membership (Spain).
• Language courses (Spain).

Hiring process

• Online test to assess tech skills.
• HR interview to discuss motivations and culture fit.
• Technical interview with Tech Managers, including practical exercises.
• Final interview to align on expectations and future growth.