X-on Health

This entry-level associate software engineering role within an NHS-focused communications provider focuses on building advanced call experience infrastructure and data insight tools, tasking engineers with developing Go-based voice agents, creating unified AI APIs, and refining prompt engineering to safely integrate LLMs into healthcare contexts.We are looking for an Associate Software Engineer to join the team at X-on in Melton, Woodbridge. Within this role you will help build the infrastructure that powers our next generation of call experiences and data insight tools for our NHS customers. Responsibilities:Work within a small agile team to solve technical challenges, develop new functionality and make non-functional improvements to our products and services.Understand business requirements and how they translate into technical design and development projects and tasks.Participate in architectural and design discussions and diagnose and troubleshoot complex technical issuesWork with stakeholders to progress and report on projects and tasksBuilding Voice Agents: Developing and maintaining our Go-based Voice AgentAPI Development: Contributing to our unified AI API that acts as the gateway between our telephony products and various AI providersTool Creation: Developing “Tools” (Function Calling) that allow LLMs to interact with real-world data, enabling features such as consultant lookups (RAG) and clinical system integrationsData Insights: Building pipelines to transcribe and analyse historical call recordings to extract sentiment, summary, and outcome dataPrompt Engineering: Refining system prompts to ensure our agents are safe, accurate, and empathetic in a healthcare context.Learning and Development: Keeping up to date with the rapidly changing AI landscape (e.g. exploring new models) and prototyping how they can be applied to our productsOperations: Optionally contribute to our AI infrastructure to help operate self-hosted open-source modelsTesting & Validation: Development of tooling to assist our Test Team in conducting evals against our many provider models to ensure we are continually optimising for quality and costSkills Required:Competent in primary tech stackConfident with computer science basics (algorithms, data structures, complexity, design patterns)Is productive with the basic tools in their discipline Key SkillsCan contribute to an existing frameworkAdheres to test coverage standardsRegularly applies learnings from past experienceProgramming Proficiency: Foundation in a backend language. Our stack is primarily Go (Golang), so experience with Go or a strong willingness to cross-train from C++/Java/Rust/Python is requiredAPI Integration: Experience consuming RESTful APIs and understanding of JSON data structuresAI/LLM Exposure: Practical experience interacting with LLM APIs (OpenAI, Anthropic, etc.) and understanding concepts like Context Windows, RAG, System Prompts, and TemperatureConcurrency: Understanding of asynchronous programming (WebSockets, goroutines) is highly beneficial given the real-time nature of voice data Benefits:25 Days HolidayBirthday Day OffBuy Holiday SchemeCycle to Work SchemeWinter Flu JabsFree On-Site ParkingLearning and development budget with Professional Qualification SupportSocial benefits (paid social events)

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