AI Software Engineer

Hybrid- Office based Monday, Wednesday and Friday

We are looking for a Software Engineer to join our expanding team.

You will help build the infrastructure that powers our next generation of call experiences and data insight tools for our NHS customers.

You will have several years’ experience in industry.

You will be working on greenfield projects involving real-time voice agents, managing the orchestration between Telephony, Speech-to-Text, LLMs, and Text-to-Speech services to help our product team to realise their vision.

You will also help develop pipelines to analyse call recording data at scale, extracting vital insights on performance and customer satisfaction.

This is a multi-discipline role well suited to an individual with the ability to think on their feet and who learns quickly.

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 issues
• Work with stakeholders to progress and report on projects and tasks
• Building Voice Agents: Developing and maintaining our Go-based Voice Agent
• API Development: Contributing to our unified AI API that acts as the gateway between our telephony products and various AI providers
• Tool

Creation: Developing “Tools” (Function Calling) that allow LLMs to interact with real-world data, enabling features such as consultant lookups (RAG) and clinical system integrations

• Data Insights: Building pipelines to transcribe and analyse historical call recordings to extract sentiment, summary, and outcome data
• Prompt 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 products
• Operations: Optionally contribute to our AI infrastructure to help operate self-hosted open-source models
• Testing & 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 cost
• Our core tech stack
• Git Lab
• My SQL
• Rabbit MQ
• Redis
• PHP + Laravel
• React
• Electron
• Puppet (build and deploy)
• Open SIPS
• Free SWITCH

Essential experience

• Programming

Proficiency: Strong 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 required

• API Integration: Experience consuming RESTful APIs and understanding of JSON data structures
• AI/LLM Exposure: Practical experience interacting with LLM APIs (Open AI, Anthropic, etc.) and understanding concepts like Context Windows, RAG, System Prompts, and Temperature
• Concurrency: Understanding of asynchronous programming (Web Sockets, goroutines) is highly beneficial given the real‑time nature of voice data
• Several years experience in industry
• A team player who shows initiative

Desirable experience

• Experience with LLM guardrails and PII‑redaction
• Understanding of LLM tool development and MCP
• Knowledge of Speech-to-Text (STT) or Text-to-Speech (TTS) technologies
• Experience with Web Sockets and streaming data
• Familiarity with Telephony/Vo IP
• Other Skills Required
• Competent in primary tech stack
• Confident with computer science basics (algorithms, data structures, complexity, design patterns)
• Is productive with the basic tools in their discipline Key Skills
• Can contribute to an existing framework and is able to deliver small stories
• Adheres to test coverage standards
• Regularly applies learnings from past experience
• Collaborating with team members and is flexible and open to change
• Write unit tests and integration tests to ensure code quality
• Participate in code reviews and ensure adherence to coding standards

Benefits

• 25 Days Holiday
• Birthday Day Off
• Buy Holiday Scheme
• Cycle to Work Scheme
• Winter Flu Jabs
• Free On-Site Parking
• Learning and development budget with Professional Qualification Support
• Social benefits (paid social events)

SCG is proud to be an equal opportunities employer.

We welcome applications from all parts of the community and are committed to upholding the principles of the Equality Act 2010.

We are committed to supporting applicants with disabilities. We will endeavour to make necessary adjustments to ensure a fair and accessible recruitment process.

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