Senior Data Scientist

DataCareers; City Of London; Remote; GBP 90,000 - 130,000; Full time

Job summary

Datacareers is seeking an experienced Senior Data Scientist to join its Data & AI team. You will blend statistical modelling with hands-on Python software engineering to build and productionize AI-powered software solutions.

Work across data science, ML, data engineering and AI development, influencing new product capabilities, with fully remote UK work and strong collaboration across international teams.

Qualifications

• 5+ years in Data Science or ML engineering.
• Strong commercial Python coding experience.
• Excellent mathematical and statistical knowledge.
• Experience deploying ML/data-intensive solutions to production.
• Experience maintaining production software systems.
• Ability to work independently and own technical solutions.
• Strong communication and collaboration skills.

Responsibilities

• Develop, maintain and enhance statistical models and ML algorithms.
• Build production-quality Python applications, services and APIs.
• Support and improve existing modelling and automated assessment systems.
• Develop and maintain data pipelines, services and infrastructure.
• Contribute to new AI capabilities (LLMs, embeddings, RAG).
• Deploy, monitor and troubleshoot production data/ML systems.
• Collaborate with software engineers, data specialists and product teams.
• Apply mathematical/statistical techniques to solve complex issues.

Skills

Data Science

Python programming

Statistical modelling

Production systems

Independent work

Communication

Data engineering

AWS

PyTorch

FastAPI

APIs

CI/CD

Containerisation

LLMs/RAG

Optimization

EdTech domain

MSc/PhD

Education

MSc or PhD in a mathematical, scientific or quantitative discipline

Tools

Databricks

PySpark

Spark

FastAPI

PyTorch

Job description

Senior Data Scientist - Python / Machine Learning

Permanent

Location: UK - Remote

Skills: Python, Machine Learning, Statistical Modelling, AWS, Data Engineering

An exciting opportunity has arisen for an experienced Senior Data Scientist to join a growing international technology business developing innovative, AI-powered software solutions.

Working within a specialist Data & AI team, you'll combine advanced statistical modelling with hands-on Python software engineering, helping to develop, improve and maintain production systems used by customers worldwide.

This is not a traditional reporting or analytics-focused Data Scientist position. We're looking for someone who enjoys solving complex mathematical problems and has the technical ability to turn models and algorithms into reliable, production-ready software.

You'll work across data science, machine learning, data engineering and AI development, with the opportunity to influence new product capabilities.

This is a UK based role that is fully remote.

Key Responsibilities

• Develop, maintain and enhance statistical models and machine learning algorithms.
• Build production-quality Python applications, services and APIs.
• Support and improve existing mathematical modelling and automated assessment systems.
• Develop and maintain data pipelines, services and infrastructure.
• Contribute to new AI capabilities, including Large Language Models (LLMs), embeddings, semantic search and Retrieval-Augmented Generation (RAG).
• Deploy, monitor and troubleshoot production data and machine learning systems.
• Work collaboratively with software engineers, data specialists and product teams.
• Apply mathematical and statistical techniques to solve complex technical challenges.

Skills & Experience Required

• 5+ years' experience in Data Science, Machine Learning Engineering or a closely related technical discipline.
• Strong commercial Python programming experience, including developing clean, tested and maintainable production code.
• Excellent mathematical and statistical knowledge, including probability, statistical modelling and optimisation.
• Proven experience developing and deploying machine learning or data-intensive solutions into production environments.
• Experience developing, supporting or maintaining production software systems.
• Ability to work independently, investigate complex problems and take ownership of technical solutions.
• Strong communication skills and a collaborative approach.
• Data engineering technologies such as Databricks, PySpark or Spark.
• Cloud platforms, particularly AWS.
• Python frameworks such as FastAPI and PyTorch.
• Experience developing APIs and data pipelines.
• Infrastructure as Code, CI/CD and containerisation.
• Hands-on experience with LLMs, RAG, embeddings or generative AI.
• Mathematical optimisation techniques, such as linear programming or constraint satisfaction.
• Experience within EdTech, educational assessment or psychometrics.
• MSc or PhD in a mathematical, scientific or other quantitative discipline.

What's on Offer?

• Fully remote working anywhere within the UK.
• Opportunity to join an established international technology business.
• Work on sophisticated statistical modelling and AI-driven software products.
• Exposure to a broad range of technologies and complex engineering challenges.
• Opportunity to contribute to the development of new AI capabilities.
• Collaborative international team with significant technical autonomy.
• Long-term career development and progression.