Principal Data Scientist

JR United Kingdom; Woking; On-site; GBP 60,000 - 80,000; Full time

Job summary

A tech company in Woking is seeking a professional to design and build Gen AI virtual agents, focusing on LLM-powered experiences. The role requires expertise in machine learning algorithms, cloud services (AWS and Azure), and strong engineering skills. Ideal candidates should possess a relevant degree (MSc or PhD preferred) and experience with tools like Terraform and Kubernetes. This position offers an opportunity to innovate within a dynamic team environment.

Qualifications

• Proven expertise in mathematics and classical ML algorithms.
• Deep knowledge of LLMs including prompting and fine-tuning.
• Hands-on experience with AWS and Azure for data and ML.

Responsibilities

• Design and build client-specific GenAI/LLM virtual agents.
• Enable orchestration and management of AI-powered interactions.
• Develop CI/CD pipelines for chatbots and agent services.

Skills

Mathematics expertise

Classical ML algorithms

AWS and Azure services

Python programming

APIs and containers

Workflow Automation

Stakeholder Management

Agile Methodologies

Education

Relevant primary level degree

MSc or PhD in a related field

Tools

Terraform

CloudFormation

Kubernetes

GitHub Actions

Azure DevOps

Job description

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You will be part of a team designing and building a Gen AI virtual agent to support customers and employees across multiple channels. You will build and run LLM-powered agentic experiences, owning the design, orchestration, MLOps, and continuous improvement.

• Design & build client-specific GenAI/LLM virtual agents
• Enable the orchestration, management, and execution of AI-powered interactions through purpose-built AI agents
• Design, build and maintain robust LLM powered processing workflows
• Develop cutting edge testing suites related to bespoke LLM performance metrics
• Develop bespoke testing suites and LLM performance metrics
• CI/CD for ML/LLM: automated build/train/validate/deploy pipelines for chatbots and agent services
• IaC - Infrastructure as Code, (Terraform/CloudFormation) to provision scalable cloud for training and real-time inference
• Observability: monitoring, drift detection, hallucination, SLOs, and alerting for model and service health
• Serving at scale: containerised, auto-scaling (e.g., Kubernetes) with low-latency inference
• Data & model versioning; maintain a central model registry with lineage and rollback
• Deliver a live performance dashboard (intent accuracy, latency, error rates) and a documented retraining strategy
• Lead and foster creativity around frameworks/models; collaborate closely with product, engineering, and client stakeholders

Qualifications / Experience

• Relevant primary level degree and ideally MSc or PhD
• Proven expertise in mathematics and classical ML algorithms, plus deep knowledge of LLMs (prompting, fine-tuning, RAG/tool use, evaluation)
• Hands-on with AWS and Azure services for data/ML (e.g., Bedrock/SageMaker, Azure OpenAI/Azure ML)
• Strong engineering: Python, APIs, containers, Git; CI/CD (GitHub Actions/Azure DevOps), IaC (Terraform/CloudFormation)
• Scalable Serving Infrastructure: A containerized, auto-scaling environment (e.g., using Kubernetes) to serve the chatbot model with low latency
• Workflow Automation: Automate the end-to-end machine learning lifecycle, from data ingestion and preprocessing to model retraining and deployment
• Live Performance Dashboard: A real-time dashboard displaying key model metrics such as intent accuracy, response latency, and error rates
• Centralized Model Registry: A versioned repository for all trained models, their performance metrics, and associated training data
• Documented Retraining Strategy: An automated workflow and documentation outlining the process for periodically retraining the model on new data
• Experience with Kubernetes, inference optimisation, caching, vector stores, and model registries
• Clear communication, stakeholder management, and a habit of writing crisp technical docs and runbooks

Personal Attributes

• Personal Integrity, Stakeholder Management, Project Management, Agile Methodologies, Automation, Data Visualisation and Analysis.