Backend Engineer (AI)

TL;DR

Backend Engineer (AI): Architecting and building scalable, real-time backend services for AI-powered conversational products with an accent on API design, third-party integrations, and multi-agent orchestration. Focus on experimenting with new AI technologies, implementing real-time communication features, and ensuring robust operational support.

Location: Work entirely remotely from Italy or Spain, or collaborate in-person at our vibrant hubs in Bologna or Barcelona.

Company

hirify.global transforms healthcare experiences through intelligent digital solutions, offering a trusted patient engagement platform powering leading healthcare institutions in Europe and Latin America.

What you will do

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

Requirements

• 3+ years of experience in OOP Backend Engineering.
• Proven skills in building real-time APIs (websockets, streaming) and familiarity with async programming.
• Hands-on experience integrating LLMs (preferably OpenAI) 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, integration, e2e testing).

Nice to have

• Experience working with containerization (Docker) and cloud infrastructure (AWS, GCP, or Azure).
• Experience with conversational AI frameworks (chatbot, voice assistant) and AI/ML frameworks (LangChain, LangGraph).
• Previous work migrating legacy systems to modern stacks.
• Experience with real-time speech processing, TTS/STT, and telephony systems.

Culture & Benefits

• 100% remote work option from Italy or Spain, with the option to join 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, private health coverage via Metasalute.
• Spain-specific: Comprehensive private health insurance with Adeslas, Flexoh (flexible compensation), Wellhub (gym & wellness network membership), language courses.

Hiring process

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