Principal Data Scientist
Principal Data Scientist

Principal Data Scientist

Belfast Full-Time 43200 - 72000 £ / year (est.) No home office possible
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At a Glance

  • Tasks: Join a team to design and build cutting-edge Gen AI virtual agents for diverse customer interactions.
  • Company: Innovative tech company focused on AI solutions for enhancing customer and employee experiences.
  • Benefits: Enjoy flexible work options, competitive salary, and opportunities for professional growth.
  • Why this job: Be at the forefront of AI technology, collaborating with creative minds in a dynamic environment.
  • Qualifications: Degree in relevant field; expertise in ML algorithms and LLMs; hands-on experience with AWS/Azure.
  • Other info: Ideal for those passionate about AI and eager to make a real impact in the tech industry.

The predicted salary is between 43200 - 72000 £ per year.

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
  • Craft context-aware, multi-channel self-service experiences
  • 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
  • Workflow automation across the ML lifecycle (data ingestion → retraining → deployment)
  • 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.

Principal Data Scientist employer: ISx4

As a Principal Data Scientist at our innovative company, you will thrive in a dynamic work culture that champions creativity and collaboration. We offer competitive benefits, including professional development opportunities and a supportive environment that encourages continuous learning and growth. Located in a vibrant tech hub, you'll have access to cutting-edge resources and a network of like-minded professionals dedicated to pushing the boundaries of AI technology.
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Contact Detail:

ISx4 Recruiting Team

StudySmarter Expert Advice 🤫

We think this is how you could land Principal Data Scientist

✨Tip Number 1

Familiarise yourself with the latest advancements in Gen AI and LLMs. Understanding the nuances of prompting, fine-tuning, and evaluation will give you a significant edge during discussions with our team.

✨Tip Number 2

Showcase your hands-on experience with AWS and Azure services. Be prepared to discuss specific projects where you've utilised tools like SageMaker or Azure ML, as this will demonstrate your practical knowledge.

✨Tip Number 3

Highlight your engineering skills, particularly in Python and CI/CD practices. We value candidates who can seamlessly integrate code into automated workflows, so be ready to share examples of your work in this area.

✨Tip Number 4

Prepare to discuss your approach to monitoring and observability in machine learning models. Being able to articulate how you handle drift detection and model health will resonate well with our focus on continuous improvement.

We think you need these skills to ace Principal Data Scientist

Expertise in Mathematics and Classical ML Algorithms
Deep Knowledge of LLMs (Prompting, Fine-tuning, RAG/Tool Use, Evaluation)
Hands-on Experience with AWS and Azure Services for Data/ML
Strong Engineering Skills in Python, APIs, and Containers
Proficiency in CI/CD Tools (GitHub Actions/Azure DevOps)
Experience with Infrastructure as Code (Terraform/CloudFormation)
Knowledge of Scalable Serving Infrastructure (Kubernetes)
Workflow Automation across the ML Lifecycle
Ability to Develop Live Performance Dashboards
Experience with Centralized Model Registries
Documented Retraining Strategy Development
Familiarity with Inference Optimisation and Caching
Clear Communication and Stakeholder Management Skills
Ability to Write Technical Documentation and Runbooks
Project Management and Agile Methodologies
Data Visualisation and Analysis Skills

Some tips for your application 🫡

Tailor Your CV: Make sure your CV highlights relevant experience in data science, particularly with LLMs and AI technologies. Emphasise your hands-on experience with AWS, Azure, and any specific projects that align with the job description.

Craft a Compelling Cover Letter: In your cover letter, express your passion for AI and data science. Discuss how your skills and experiences make you a perfect fit for designing and building Gen AI virtual agents, and mention any specific achievements related to the role.

Showcase Technical Skills: Clearly outline your technical skills in Python, CI/CD, and containerisation. Provide examples of how you've used these skills in past projects, especially in relation to ML lifecycle automation and performance monitoring.

Highlight Collaboration Experience: Since the role involves working closely with product and engineering teams, include examples of successful collaborations in your application. Mention any experience in stakeholder management and how you’ve contributed to team projects.

How to prepare for a job interview at ISx4

✨Showcase Your Technical Expertise

Be prepared to discuss your hands-on experience with LLMs and classical ML algorithms. Highlight specific projects where you've implemented these technologies, especially in relation to AWS or Azure services.

✨Demonstrate Problem-Solving Skills

Expect to face scenario-based questions that assess your ability to design and build AI-powered interactions. Think through your approach to problem-solving and be ready to explain your thought process clearly.

✨Communicate Effectively

Since clear communication is key for this role, practice articulating complex technical concepts in a straightforward manner. Be ready to discuss how you manage stakeholder expectations and collaborate with cross-functional teams.

✨Prepare for Behavioural Questions

Reflect on your past experiences and be ready to share examples that demonstrate your personal integrity, project management skills, and adaptability in an agile environment. Use the STAR method (Situation, Task, Action, Result) to structure your responses.

Principal Data Scientist
ISx4

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