Our client is a start-up which builds enterprise voice automation and conversational AI products, enabling businesses to scale intelligent inbound and outbound communication workflows with speed, reliability, and precision. Role Description This is a full-time position at our Manchester office (or remotely with occasional visits to Manchester) for a Full-Stack Engineer specialising in Voice & Conversational AI. The role involves designing and developing scalable applications and web interfaces, ensuring seamless integration of front-end and back-end components. Responsibilities include implementing APIs, automating workflows in communication platforms, troubleshooting issues, and collaborating with cross-functional teams to deliver innovative solutions. The ideal candidate will contribute to creating intelligent systems that enhance customer engagement and improve business processes. Qualifications Experience as a Full-Stack Engineer, with hands-on delivery across frontend and backend systems Proficiency in modern frontend frameworks, particularly Next.js and the React ecosystem Solid backend development experience using Python, including API design and scalable service architecture Experience building and maintaining cloud-native applications on Azure Practical knowledge of CI/CD pipelines, including deployments and environment management Experience with real-time voice and conversational experiences, including audio streaming, low-latency systems, and voice-driven user interfaces Familiarity with integrating speech-to-text, text-to-speech, and conversational AI workflows into production systems Strong understanding of version control using Git, including collaborative workflows (PRs, branching strategies) Ability to design, build, and maintain secure, reliable, and performant systems end to end Comfortable working in a fast-paced environment with a high degree of ownership and autonomy Knowledge of Kubernetes & Redis Full UK Driving License and own transport required for customer meetings within the UK (Essential) Bonus points Recent graduate in a relevant subject at either BSc. or MSc. Experience with telephony, WebRTC, or real-time communication platforms Exposure to AI/LLM-powered applications and orchestration of AI services Startup or scale-up experience, with a product-first mindset