Back End Developer

Company Description InTouchNow.ai is an award-winning UK-based healthcare technology company building AI-powered voice agents for GP practices and clinics. Our platform automates patient calls, handles appointment booking, and performs medical triage using conversational AI to reduce wait times, improve access, and ease pressure on reception teams.

Role Description This is a full-time, on-site role located in Borehamwood, Hertfordshire. We are looking for an experienced Backend Software Engineer to help build and scale the core infrastructure behind our AI voice platform. You will work on real-time systems that handle hundreds of concurrent patient interactions, integrate with NHS systems, and orchestrate AI-driven workflows.

Responsibilities Design and build scalable backend services for real-time voice AI systems Develop APIs and services that power conversational workflows and integrations Work on event-driven systems handling telephony, streaming, and AI responses Integrate with third-party systems (e.g. EMIS, SystmOne, online consultation platforms) Optimise performance, reliability, and latency of backend services Contribute to system architecture, infrastructure decisions, and best practices

Requirements Strong experience building backend systems with Node.js (5+ years) Experience designing scalable APIs and distributed systems Familiarity with real-time or event-driven architectures (WebSockets, queues, streaming) Experience with cloud platforms (AWS preferred) Solid understanding of databases (SQL and/or NoSQL) Experience integrating with external APIs and third-party systems Strong problem-solving skills and ability to work in a fast-paced environment

Nice to Have Experience with voice/telephony systems (e.g. Twilio, SIP, WebRTC) Exposure to LLMs, AI systems, or conversational workflows Experience in healthcare or regulated environments Knowledge of infrastructure-as-code (Terraform, CDK) Experience with observability, monitoring, and scaling production systems